FrigoSim Models

1:	vDisp	-	Swept volume flow	[m³/s]
2:	rwLoss	-	Relative heat loss	[-]
3:	rmRfrMn	-	Minimum part load	[-]
4:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
5:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
6:	rwIn	-	Relative shaft power at partial load	[-]	function of Relative load and Pressure ratio

Number of capacity steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	rmRfr	-	Relative load	[-]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
4:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
5:	wIN	-	Shaft power	[W]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	rmRfr	-	Relative load	[-]	controllable parameter
2:	qRfr	-	Heat to refrigerant	[W]
3:	vRfrMx	-	Volume flow rate at full capacity	[m³/s]
4:	tRfrIN	-	Suction temperature	[°C]
5:	tRfrOUT	-	Discharge temperature	[°C]
6:	pRfrIN	-	Suction pressure	[N/m²]
7:	pRfrOUT	-	Discharge pressure	[N/m²]
8:	rpOutIn	-	Pressure ratio	[-]

See also:

cmpRecC - Cooled reciprocating compressor

Data:

1:	vDisp	-	Swept volume flow	[m³/s]
2:	rmRfrMn	-	Minimum part load	[-]
3:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
4:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
5:	rwIn	-	Relative shaft power at partial load	[-]	function of Relative load and Pressure ratio
6:	rwLoss	-	Relative heat loss	[-]	function of Relative load and Pressure ratio

Number of capacity steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis
4:	Secondary fluid inlet
5:	Secondary fluid outlet

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	rmRfr	-	Relative load	[-]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
6:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
7:	wIN	-	Shaft power	[W]
8:	mRfr	-	Refrigerant mass flow rate	[kg/s]
9:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	rmRfr	-	Relative load	[-]	controllable parameter
3:	qRfr	-	Heat to refrigerant	[W]
4:	vRfrMx	-	Volume flow rate at full capacity	[m³/s]
5:	tRfrIN	-	Suction temperature	[°C]
6:	tRfrOUT	-	Discharge temperature	[°C]
7:	pRfrIN	-	Suction pressure	[N/m²]
8:	pRfrOUT	-	Discharge pressure	[N/m²]
9:	rpOutIn	-	Pressure ratio	[-]
10:	qSec	-	Heat to secondary fluid	[W]
11:	tSecAv	-	Mean secondary fluid temperature	[°C]

See also:

cmpSpeed - Speed controlled compressor

Data:

1:	volDisp	-	Displacement volume	[m³]
2:	nRotMn	-	Lower rotational speed	[Hz]
3:	nRotMx	-	Upper rotational speed	[Hz]
4:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Rotational speed
5:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Rotational speed
6:	rwLoss	-	Relative heat loss	[-]	function of Pressure ratio and Rotational speed

Number of speed steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	nRot	-	Rotational speed	[Hz]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
4:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
5:	wIN	-	Shaft power	[W]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	nRot	-	Rotational speed	[Hz]	controllable parameter
2:	qRfr	-	Heat to refrigerant	[W]
3:	tRfrIN	-	Suction temperature	[°C]
4:	tRfrOUT	-	Discharge temperature	[°C]
5:	pRfrIN	-	Suction pressure	[N/m²]
6:	pRfrOUT	-	Discharge pressure	[N/m²]
7:	rpOutIn	-	Pressure ratio	[-]

See also:

cmpSpC - Cooled speed controlled compressor

Data:

1:	volDisp	-	Displacement volume	[m³]
2:	nRotMn	-	Lower rotational speed	[Hz]
3:	nRotMx	-	Upper rotational speed	[Hz]
4:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Rotational speed
5:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Rotational speed
6:	rwLoss	-	Relative heat loss	[-]	function of Pressure ratio and Rotational speed

Number of speed steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis
4:	Secondary fluid inlet
5:	Secondary fluid outlet

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	nRot	-	Rotational speed	[Hz]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
6:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
7:	wIN	-	Shaft power	[W]
8:	mRfr	-	Refrigerant mass flow rate	[kg/s]
9:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	nRot	-	Rotational speed	[Hz]	controllable parameter
3:	qRfr	-	Heat to refrigerant	[W]
4:	tRfrIN	-	Suction temperature	[°C]
5:	tRfrOUT	-	Discharge temperature	[°C]
6:	pRfrIN	-	Suction pressure	[N/m²]
7:	pRfrOUT	-	Discharge pressure	[N/m²]
8:	rpOutIn	-	Pressure ratio	[-]
9:	qSec	-	Heat to secondary fluid	[W]
10:	tSecAv	-	Mean secondary fluid temperature	[°C]

See also:

cmpScr - Screw compressor

Data:

1:	vDispMx	-	Maximum swept volume flow	[m³/s]
2:	rwLoss	-	Relative heat loss	[-]
3:	rmRfrMn	-	Minimum part load	[-]
4:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
5:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
6:	rwIn	-	Relative shaft power at partial load	[-]	function of Relative load and Pressure ratio

Number of capacity steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis
4:	Oil inlet
5:	Oil outlet

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tOilAv	-	Oil mean temperature	[°C]
4:	rmRfr	-	Relative load	[-]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tOilIn	-	Inlet oil temperature	[°C]
4:	tOilOut	-	Outlet oil temperature	[°C]
5:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
6:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
7:	wIN	-	Shaft power	[W]
8:	mRfr	-	Refrigerant mass flow rate	[kg/s]
9:	mOil	-	Oil mass flow rate	[kg/s]

Parameters:

1:	cpOil	-	Oil specific heat capacity	[J/kgK]	fluid parameter function of Oil mean temperature
2:	rmRfr	-	Relative load	[-]	controllable parameter
3:	qRfr	-	Heat to refrigerant	[W]
4:	vRfrIN	-	Volume flow rate suction port	[m³/s]
5:	tRfrIN	-	Suction temperature	[°C]
6:	tRfrOUT	-	Discharge temperature	[°C]
7:	pRfrIN	-	Suction pressure	[N/m²]
8:	pRfrOUT	-	Discharge pressure	[N/m²]
9:	rpOutIn	-	Pressure ratio	[-]
10:	qOil	-	Oil cooling	[W]
11:	tOilAv	-	Oil mean temperature	[°C]

See also:

cmpScrE - Screw compressor with economiser port

Data:

1:	vDispMx	-	Maximum swept volume flow	[m³/s]
2:	rwLoss	-	Relative heat loss	[-]
3:	rmRfrMn	-	Minimum part load	[-]
4:	rPoly	-	Polytropic coefficient	[-]
5:	rVolEco	-	Volume ratio economiser/suction port	[-]
6:	rEffVol	-	Volumetric efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
7:	rEffIsen	-	Isentropic efficiency	[-]	function of Pressure ratio and Discharge dew-point temperature
8:	rwIn	-	Relative shaft power at partial load	[-]	function of Relative load and Pressure ratio

Number of capacity steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Economiser port
4:	Shaft axis
5:	Oil inlet
6:	Oil outlet

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPEco	-	Economiser port dew-point temperature	[°C]
3:	tDPOUT	-	Discharge dew-point temperature	[°C]
4:	tOilAv	-	Oil mean temperature	[°C]
5:	rmRfr	-	Relative load	[-]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPEco	-	Economiser port dew-point temperature	[°C]
3:	tDPOUT	-	Discharge dew-point temperature	[°C]
4:	tOilIn	-	Inlet oil temperature	[°C]
5:	tOilOut	-	Outlet oil temperature	[°C]
6:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
7:	hRfrEco	-	Specific enthalpy economiser port	[J/kg]
8:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
9:	wIN	-	Shaft power	[W]
10:	mRfrIn	-	Inlet mass flow rate	[kg/s]
11:	mRfrEco	-	Mass flow rate economiser port	[kg/s]
12:	mRfrOut	-	Outlet refrigerant mass flow rate	[kg/s]
13:	mOil	-	Oil mass flow rate	[kg/s]

Parameters:

1:	cpOil	-	Oil specific heat capacity	[J/kgK]	fluid parameter function of Oil mean temperature
2:	rmRfr	-	Relative load	[-]	controllable parameter
3:	qRfr	-	Heat to refrigerant	[W]
4:	vRfrIN	-	Volume flow rate suction port	[m³/s]
5:	tRfrIN	-	Suction temperature	[°C]
6:	tRfrEco	-	Economiser port temperature	[°C]
7:	tRfrOUT	-	Discharge temperature	[°C]
8:	pRfrIN	-	Suction pressure	[N/m²]
9:	pRfrEco	-	Economiser port pressure	[N/m²]
10:	pRfrOUT	-	Discharge pressure	[N/m²]
11:	pEcoInt	-	Pressure before economiser filling	[N/m²]
12:	rpOutIn	-	Pressure ratio	[-]
13:	qOil	-	Oil cooling	[W]
14:	tOilAv	-	Oil mean temperature	[°C]

See also:

cmpTurbo - Turbo compressor

Data:

1:	rpNom	-	Nominal pressure ratio	[-]
2:	vRfrNom	-	Nominal volume flow	[m³/s]
3:	rEffNom	-	Nominal compressor efficiency	[-]
4:	angPreMn	-	Minimum prerotation angle	[radians]
5:	rvRfr	-	Relative volume flow	[-]	function of Relative pressure ratio and Prerotation vane angle
6:	rrEff	-	Relative compressor efficiency	[-]	function of Relative pressure ratio and Prerotation vane angle
7:	rvRfrMn	-	Minimum relative volume flow	[-]	function of Relative pressure ratio
8:	rvRfrMx	-	Maximum relative volume flow	[-]	function of Relative pressure ratio

Prerotation angle steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	angPre	-	Prerotation vane angle	[radians]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
4:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
5:	wIN	-	Shaft power	[W]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	angPre	-	Prerotation vane angle	[radians]	controllable parameter
2:	qRfr	-	Heat to refrigerant	[W]
3:	vRfr	-	Volume flow rate	[m³/s]
4:	tRfrIN	-	Suction temperature	[°C]
5:	tRfrOUT	-	Discharge temperature	[°C]
6:	pRfrIN	-	Suction pressure	[N/m²]
7:	pRfrOUT	-	Discharge pressure	[N/m²]
8:	rpOutIn	-	Pressure ratio	[-]
9:	rrpOutIn	-	Relative pressure ratio	[-]
10:	rEff	-	Efficiency	[-]
11:	densIn	-	Inlet density	[kg/m³]

See also:

cmpTurbC - Cooled turbo compressor

Data:

1:	rpNom	-	Nominal pressure ratio	[-]
2:	vRfrNom	-	Nominal volume flow	[m³/s]
3:	rEffNom	-	Nominal compressor efficiency	[-]
4:	angPreMn	-	Minimum prerotation angle	[radians]
5:	rvRfr	-	Relative volume flow	[-]	function of Relative pressure ratio and Prerotation vane angle
6:	rrEff	-	Relative compressor efficiency	[-]	function of Relative pressure ratio and Prerotation vane angle
7:	rvRfrMn	-	Minimum relative volume flow	[-]	function of Relative pressure ratio
8:	rvRfrMx	-	Maximum relative volume flow	[-]	function of Relative pressure ratio
9:	rwLoss	-	Relative heat loss	[-]	function of Prerotation vane angle and Relative pressure ratio

10:

Prerotation angle steps

Connectors:

1:	Suction port
2:	Discharge port
3:	Shaft axis
4:	Secondary fluid inlet
5:	Secondary fluid outlet

Initial values:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	angPre	-	Prerotation vane angle	[radians]

Variables:

1:	tDPIN	-	Suction dew-point temperature	[°C]
2:	tDPOUT	-	Discharge dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIN	-	Specific enthalpy suction port	[J/kg]
6:	hRfrOUT	-	Specific enthalpy discharge port	[J/kg]
7:	wIN	-	Shaft power	[W]
8:	mRfr	-	Refrigerant mass flow rate	[kg/s]
9:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	angPre	-	Prerotation vane angle	[radians]	controllable parameter
3:	qRfr	-	Heat to refrigerant	[W]
4:	vRfr	-	Volume flow rate	[m³/s]
5:	tRfrIN	-	Suction temperature	[°C]
6:	tRfrOUT	-	Discharge temperature	[°C]
7:	pRfrIN	-	Suction pressure	[N/m²]
8:	pRfrOUT	-	Discharge pressure	[N/m²]
9:	rpOutIn	-	Pressure ratio	[-]
10:	rrpOutIn	-	Relative pressure ratio	[-]
11:	rEff	-	Efficiency	[-]
12:	densIn	-	Inlet density	[kg/m³]
13:	tSecAv	-	Mean secondary fluid temperature	[°C]

See also:

Pumps

pmpSec - Pump with preset mass flow rate

No data
Connectors:

1:	Inlet
2:	Outlet

Initial values:

mSec+

Mass flow rate in on state

[kg/s]

Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

mSec+

Mass flow rate in on state

[kg/s]

controllable parameter

Mathematical model description

pmpSecQ - Pump with preset mass flow rate and heat produced

Data:

1:	rwSec	-	Power fraction heating fluid	[-]
2:	wIn+	-	Required input power	[W]	function of Mass flow rate in on state and Mean secondary fluid temperature

Connectors:

1:	Inlet
2:	Outlet

Initial values:

1:	mSec+	-	Mass flow rate in on state	[kg/s]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	mSec+	-	Mass flow rate in on state	[kg/s]	controllable parameter
3:	qSec	-	Heat to secondary fluid	[W]
4:	wInPmp	-	Power to pump motor	[W]
5:	tSecAv	-	Mean secondary fluid temperature	[°C]

Mathematical model description

pmpDyn - Speed controlled secondary fluid pump

Data:

1:	rwSec	-	Power fraction heating fluid	[-]
2:	nRotMn	-	Lower rotational speed	[Hz]
3:	nRotMx	-	Upper rotational speed	[Hz]
4:	dpSec+	-	Secondary fluid pressure increase	[N/m²]	function of Volume flow rate and Rotational speed
5:	rEff	-	Efficiency	[-]	function of Volume flow rate and Rotational speed

Number of capacity steps

Connectors:

1:	Inlet
2:	Outlet

Initial values:

1:	tSecAv	-	Mean secondary fluid temperature	[°C]
2:	nRot	-	Rotational speed	[Hz]
3:	vSec	-	Volume flow rate	[m³/s]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
4:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
5:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	densSec	-	Secondary fluid density	[kg/m³]	fluid parameter function of Mean secondary fluid temperature
3:	nRot	-	Rotational speed	[Hz]	controllable parameter
4:	q	-	Performance	[W]
5:	tSecAv	-	Mean secondary fluid temperature	[°C]
6:	vSec	-	Volume flow rate	[m³/s]
7:	wInPmp	-	Power to pump motor	[W]

Mathematical model description

pmpRfr - Refrigerant pump

No data
Connectors:

1:	Inlet
2:	Outlet

Initial values:

mRfr+

Mass flow rate in on state

[kg/s]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfr	-	Specific enthalpy	[J/kg]
3:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	mRfr+	-	Mass flow rate in on state	[kg/s]	controllable parameter
2:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

pmpRfrSC - Speed controlled refrigerant pump

Data:

1:	rwRfr	-	Power fraction heating fluid	[-]
2:	nRotMn	-	Lower rotational speed	[Hz]
3:	nRotMx	-	Upper rotational speed	[Hz]
4:	dpRfr+	-	Pressure increase	[N/m²]	function of Volume flow rate and Rotational speed
5:	rEff	-	Efficiency	[-]	function of Volume flow rate and Rotational speed

Number of capacity steps

Connectors:

1:	Inlet
2:	Outlet

Initial values:

1:	tDPAv	-	Mean dew-point temperature	[°C]
2:	nRot	-	Rotational speed	[Hz]
3:	vRfr	-	Volume flow rate	[m³/s]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
4:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
5:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	nRot	-	Rotational speed	[Hz]	controllable parameter
2:	densRfr	-	Refrigerant density	[kg/m³]
3:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
4:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
5:	qRfr	-	Heat to refrigerant	[W]
6:	tDPAv	-	Mean dew-point temperature	[°C]
7:	vRfr	-	Volume flow rate	[m³/s]
8:	wInPmp	-	Power to pump motor	[W]

See also:

Motors

motNorm - Standard motor

Data:

1:	wNom	-	Nominal shaft power	[W]
2:	rEff	-	Efficiency	[-]	function of Relative load

Connectors:

1:	Power input
2:	Power output

No initial values
Variables:

1:	wIn	-	Input power	[W]
2:	wOUT	-	Shaft power	[W]

Parameters:

Relative load

[-]

Mathematical model description

motSecC - Motor cooled by secondary fluid

Data:

1:	wNom	-	Nominal shaft power	[W]
2:	rEff	-	Efficiency	[-]	function of Relative load
3:	rwLossS	-	Relative heat loss to fluid	[-]	function of Relative load

Connectors:

1:	Power input
2:	Power output
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

tSecAv

Mean secondary fluid temperature

[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	wIn	-	Input power	[W]
4:	wOUT	-	Shaft power	[W]
5:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	rw	-	Relative load	[-]
3:	qSec	-	Heat to secondary fluid	[W]
4:	tSecAv	-	Mean secondary fluid temperature	[°C]

Mathematical model description

motRfrC - Motor cooled by suction gas

Data:

1:	wNom	-	Nominal shaft power	[W]
2:	rEff	-	Efficiency	[-]	function of Relative load

Connectors:

1:	Power input
2:	Power output
3:	Refrigerant inlet
4:	Refrigerant outlet

Initial values:

tDP

Dew-point temperature

[°C]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
4:	wIn	-	Input power	[W]
5:	wOUT	-	Shaft power	[W]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	rwOut	-	Relative load	[-]
2:	qRfr	-	Heat to refrigerant	[W]
3:	tRfrIn	-	Inlet refrigerant temperature	[°C]
4:	tRfrOut	-	Outlet refrigerant temperature	[°C]
5:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

Power components

powEl - Electrical power line

Data:

1:	lCbl	-	[lCbl]	[m]
2:	dwdl_	-	[dwdl_]	[W/m]	function of [UCbl]

Connectors:

1:	Power input
2:	Power output

Initial values:

UCbl

[UCbl]

[V]

Variables:

1:	wIn	-	Input power	[W]
2:	wOut	-	Output power	[W]

Parameters:

1:	UCbl	-	[UCbl]	[V]	controllable parameter
2:	dw_	-	[dw_]	[W]

Mathematical model description

Heat exchangers - Secondary fluid(s) only

hxNorm - Standard heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Mass flow rate heat donor and Mass flow rate heat receptor

Connectors:

1:	Heat donor inlet
2:	Heat donor outlet
3:	Heat receptor inlet
4:	Heat receptor outlet

Initial values:

1:	tHiAv	-	Upper pressure mean temperature	[°C]
2:	tLoAv	-	Lower pressure mean temperature	[°C]

Variables:

1:	tHiIn	-	Upper pressure inlet temperature	[°C]
2:	tHiOut	-	Upper pressure outlet temperature	[°C]
3:	tLoIn	-	Lower pressure inlet temperature	[°C]
4:	tLoOut	-	Lower pressure outlet temperature	[°C]
5:	mSecHi	-	Mass flow rate heat donor	[kg/s]
6:	mSecLo	-	Mass flow rate heat receptor	[kg/s]

Parameters:

1:	cpSecHi	-	Specific heat capacity heat donor	[J/kgK]	fluid parameter function of Upper pressure mean temperature
2:	cpSecLo	-	Specific heat capacity heat receptor	[J/kgK]	fluid parameter function of Lower pressure mean temperature
3:	q	-	Performance	[W]
4:	ua	-	UA value	[W/K]
5:	mcpHi	-	m*cp value heat donor	[W/K]
6:	mcpLo	-	m*cp value heat receptor	[W/K]
7:	tHiAv	-	Upper pressure mean temperature	[°C]
8:	tLoAv	-	Lower pressure mean temperature	[°C]
9:	dtLmtd	-	Logarithmic mean temperature difference	[K]
10:	q_a	-	Heat flow density	[W/m²]

Mathematical model description

hxExt - Accurate heat exchanger

Data:

1:	aHi	-	Heat donor side area	[m²]
2:	aLo	-	Heat receptor side area	[m²]
3:	lHi	-	Heat donor side flow length	[m]
4:	lLo	-	Heat receptor side flow length	[m]
5:	uHi	-	Heat donor heat transfer coefficient	[W/m²K]	function of Mass flow rate heat donor and Heat donor temperature
6:	uLo	-	Heat receptor heat transfer coefficient	[W/m²K]	function of Mass flow rate heat receptor and Heat receptor temperature
7:	dpdlHi	-	Heat donor pressure gradient	[N/m�]	function of Mass flow rate heat donor and Heat donor temperature
8:	dpdlLo	-	Heat receptor pressure gradient	[N/m�]	function of Mass flow rate heat receptor and Heat receptor temperature

Number of exchanger sections

Connectors:

1:	Heat donor inlet
2:	Heat donor outlet
3:	Heat receptor inlet
4:	Heat receptor outlet

Initial values:

1:	tSecHi	-	Heat donor temperature	[°C]
2:	tSecLo	-	Heat receptor temperature	[°C]
3:	mSecHi	-	Mass flow rate heat donor	[kg/s]
4:	mSecLo	-	Mass flow rate heat receptor	[kg/s]

Variables:

1:	tHiIn	-	Upper pressure inlet temperature	[°C]
2:	tHiOut	-	Upper pressure outlet temperature	[°C]
3:	tLoIn	-	Lower pressure inlet temperature	[°C]
4:	tLoOut	-	Lower pressure outlet temperature	[°C]
5:	pHiIn	-	Inlet pressure heat donor	[N/m²]
6:	pHiOut	-	Outlet pressure heat donor	[N/m²]
7:	pLoIn	-	Inlet pressure heat receptor	[N/m²]
8:	pLoOut	-	Outlet pressure heat receptor	[N/m²]
9:	mSecHi	-	Mass flow rate heat donor	[kg/s]
10:	mSecLo	-	Mass flow rate heat receptor	[kg/s]

Parameters:

1:	cpSecHi	-	Specific heat capacity heat donor	[J/kgK]	fluid parameter function of Heat donor temperature
2:	cpSecLo	-	Specific heat capacity heat receptor	[J/kgK]	fluid parameter function of Heat receptor temperature
3:	q	-	Performance	[W]
4:	uaEquiv	-	Equivalent UA value	[W/K]
5:	mcpHi	-	m*cp value heat donor	[W/K]
6:	mcpLo	-	m*cp value heat receptor	[W/K]
7:	tSecHi	-	Heat donor temperature	[°C]
8:	tSecLo	-	Heat receptor temperature	[°C]
9:	dtSecAv	-	Mean temperature difference	[K]
10:	q_aHi	-	Heat donor heat flow density	[W/m²]

Mathematical model description

hxRot - Rotating heat exchanger

Data:

rEffT

Temperature efficiency

[-]

Connectors:

1:	Heat donor inlet
2:	Heat donor outlet
3:	Heat receptor inlet
4:	Heat receptor outlet

Initial values:

1:	tHiAv	-	Upper pressure mean temperature	[°C]
2:	tLoAv	-	Lower pressure mean temperature	[°C]

Variables:

1:	tHiIn	-	Upper pressure inlet temperature	[°C]
2:	tHiOut	-	Upper pressure outlet temperature	[°C]
3:	tLoIn	-	Lower pressure inlet temperature	[°C]
4:	tLoOut	-	Lower pressure outlet temperature	[°C]
5:	mSecHi	-	Mass flow rate heat donor	[kg/s]
6:	mSecLo	-	Mass flow rate heat receptor	[kg/s]

Parameters:

1:	cpSecHi	-	Specific heat capacity heat donor	[J/kgK]	fluid parameter function of Upper pressure mean temperature
2:	cpSecLo	-	Specific heat capacity heat receptor	[J/kgK]	fluid parameter function of Lower pressure mean temperature
3:	q	-	Performance	[W]
4:	tHiAv	-	Upper pressure mean temperature	[°C]
5:	tLoAv	-	Lower pressure mean temperature	[°C]

Mathematical model description

hxBuf - Heat exchanger with buffer

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Secondary fluid mass flow rate and Logarithmic mean temperature difference

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	tSecAv	-	Mean secondary fluid temperature	[°C]
2:	dtLmtd	-	Logarithmic mean temperature difference	[K]
3:	tBuf	-	Buffer temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	tBuf	-	Buffer temperature	[°C]	controllable parameter
3:	q	-	Performance	[W]
4:	ua	-	UA value	[W/K]
5:	mcpSec	-	m*cp value secondary fluid	[W/K]
6:	tSecAv	-	Mean secondary fluid temperature	[°C]
7:	dtLmtd	-	Logarithmic mean temperature difference	[K]
8:	q_a	-	Heat flow density	[W/m²]

See also:

hxQ1DExt - 1D heat source with external heat exchanger

Data:

1:	a	-	Area	[m²]
2:	lFlow	-	Length in flow direction	[m]
3:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Secondary fluid mass flow rate and Logarithmic mean temperature difference

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	mSec	-	Secondary fluid mass flow rate	[kg/s]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]
3:	dtLmtd	-	Logarithmic mean temperature difference	[K]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	tSurf	-	Surface temperature	[°C]
3:	q	-	Performance	[W]
4:	ua	-	UA value	[W/K]
5:	mcpSec	-	m*cp value secondary fluid	[W/K]
6:	tSecAv	-	Mean secondary fluid temperature	[°C]
7:	dtLmtd	-	Logarithmic mean temperature difference	[K]
8:	q_a	-	Heat flow density	[W/m²]

See also:

hxEl - Electric heater

No data
Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet
3:	Electrical power inlet

Initial values:

1:	q	-	Performance	[W]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	wEl	-	Electrical power	[W]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]	controllable parameter
3:	tSecAv	-	Mean secondary fluid temperature	[°C]

Mathematical model description

hxHum - Heat exchanger for air drying

Data:

Contact factor

[-]

function of Relative capacity flow

Connectors:

1:	Humid air inlet
2:	Humid air outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	xHumIn	-	Inlet air absolute humidity	[-]
3:	tHumOut	-	Outlet humid air temperature	[°C]
4:	xHumOut	-	Outlet air absolute humidity	[-]
5:	tSecIn	-	Inlet secondary fluid temperature	[°C]
6:	tSecOut	-	Outlet secondary fluid temperature	[°C]

Variables:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	tHumOut	-	Outlet humid air temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	xHumIn	-	Inlet air absolute humidity	[-]
6:	xHumOut	-	Outlet air absolute humidity	[-]
7:	mHum	-	Mass flow rate humid air	[kg/s]
8:	mSec	-	Secondary fluid mass flow rate	[kg/s]
9:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

1:	cpHumAv	-	Specific heat capacity humid air	[J/kgK]	fluid parameter function of Inlet humid air temperature
2:	cpSecAv	-	Specific heat capacity cooling fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
3:	q	-	Performance	[W]
4:	qDry	-	Dry capacity	[W]
5:	qHum	-	Wet capacity	[W]
6:	mCond	-	Condensed water vapour	[kg/s]
7:	rhHumIn	-	Inlet relative humidity	[-]
8:	rhHumOut	-	Outlet relative humidity	[-]
9:	rmcp	-	Relative capacity flow	[-]
10:	tHumAv	-	Mean temperature humid air	[°C]
11:	xHumAv	-	Mean absolute humidity	[-]
12:	tSecAv	-	Mean secondary fluid temperature	[°C]
13:	hHumIn	-	Inlet air specific enthalpy	[J/kg]
14:	hHumOut	-	Outlet air specific enthalpy	[J/kg]

See also:

hxFldBed - Fluidised bed for product drying

Data:

1:	lDiamBed	-	Bed diameter	[m]
2:	lHeight	-	Height	[m]
3:	lPr	-	Product particle size	[m]
4:	porBed	-	Bed porosity	[-]
5:	uPr	-	Heat transf coefficient product/air	[W/m²K]
6:	rateCnst	-	Constant drying rate	[1/s]	function of Inlet humid air temperature and Inlet product moisture content
7:	mcPrCrit	-	Critical moisture content	[-]	function of Inlet humid air temperature and Inlet product moisture content
8:	xMono	-	Monolayer constant	[-]	function of Inlet humid air temperature
9:	cM	-	Desorption isotherm constant	[-]	function of Inlet humid air temperature

Connectors:

1:	Humid air inlet
2:	Humid air outlet
3:	Product inlet
4:	Product outlet

Initial values:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	tPrIn	-	Inlet product temperature	[°C]
3:	mcPrIn	-	Inlet product moisture content	[-]
4:	rhHumIn	-	Inlet relative humidity	[-]

Variables:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	tHumOut	-	Outlet humid air temperature	[°C]
3:	tPrIn	-	Inlet product temperature	[°C]
4:	tPrOut	-	Outlet product temperature	[°C]
5:	xHumIn	-	Inlet air absolute humidity	[-]
6:	xHumOut	-	Outlet air absolute humidity	[-]
7:	mcPrIn	-	Inlet product moisture content	[-]
8:	mcPrOut	-	Outlet product moisture content	[-]
9:	mHum	-	Mass flow rate humid air	[kg/s]
10:	mPrIn	-	Inlet product mass flow rate	[kg/s]
11:	mPrOut	-	Outlet product mass flow rate	[kg/s]
12:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

1:	cpHum	-	Specific heat capacity humid air	[J/kgK]	fluid parameter function of Inlet humid air temperature
2:	densHum	-	Density humid air	[kg/m³]	fluid parameter function of Inlet humid air temperature
3:	dvHum	-	Dynamic viscosity humid air	[Ns/m²]	fluid parameter function of Inlet humid air temperature
4:	tcHum	-	Thermal conductivity humid air	[W/mK]	fluid parameter function of Inlet humid air temperature
5:	cpPr	-	Specific heat capacity product	[J/kgK]	fluid parameter function of Inlet product temperature
6:	densPr	-	Density product	[kg/m³]	fluid parameter function of Inlet product temperature
7:	rhHumIn	-	Inlet relative humidity	[-]
8:	rhHumOut	-	Outlet relative humidity	[-]
9:	mdEff	-	Effective mass diffusivity	[m/s]
10:	mfWPart	-	Particle water mass flux	[kg/m²s]
11:	q	-	Performance	[W]
12:	mcPrEqui	-	Equilibrium moisture content	[-]
13:	mtcBed	-	Mass transfer coefficient bed/air	[m/s]
14:	mWRem	-	Water removal mass flow rate	[kg/s]
15:	timeRes	-	Particle residence time	[seconds]

See also:

Heat exchangers - Secondary fluid/Refrigerant

hxGasC - Gas cooler

Data:

1:	aRfr	-	Refrigerant side area	[m²]
2:	aSec	-	Secondary fluid side area	[m²]
3:	lRfr	-	Refrigerant side flow length	[m]
4:	lSec	-	Secondary fluid side flow length	[m]
5:	uRfr	-	Refrigerant heat transfer coeff.	[W/m²K]	function of Refrigerant mass flow rate and Refrigerant temperature
6:	uSec	-	Secondary fluid heat transfer coeff.	[W/m²K]	function of Secondary fluid mass flow rate and Secondary fluid temperature
7:	dpdlRfr	-	Refrigerant pressure gradient	[N/m�]	function of Refrigerant mass flow rate and Refrigerant temperature
8:	dpdlSec	-	Secondary fluid pressure gradient	[N/m�]	function of Secondary fluid mass flow rate and Secondary fluid temperature

Number of exchanger sections

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tSec	-	Secondary fluid temperature	[°C]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
6:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
7:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
8:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
9:	mRfr	-	Refrigerant mass flow rate	[kg/s]
10:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Secondary fluid temperature
2:	q	-	Performance	[W]
3:	tRfrIn	-	Inlet refrigerant temperature	[°C]
4:	tRfrOut	-	Outlet refrigerant temperature	[°C]
5:	tRfr	-	Refrigerant temperature	[°C]
6:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
7:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
8:	cpRfr	-	Specific heat capacity refrigerant	[J/kgK]
9:	ua	-	UA value	[W/K]
10:	tSec	-	Secondary fluid temperature	[°C]
11:	dpSec-	-	Secondary fluid pressure drop	[N/m²]
12:	dtLmtd	-	Logarithmic mean temperature difference	[K]
13:	q_a	-	Heat flow density	[W/m²]

See also:

hxSuper - Superheat heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Secondary fluid mass flow rate

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecIn	-	Inlet secondary fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]
7:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	tRfrIn	-	Inlet refrigerant temperature	[°C]
4:	tRfrOut	-	Outlet refrigerant temperature	[°C]
5:	tRfrAv	-	Mean refrigerant temperature	[°C]
6:	pRfr	-	Refrigerant pressure	[N/m²]
7:	ua	-	UA value	[W/K]
8:	tSecAv	-	Mean secondary fluid temperature	[°C]
9:	cpRfr	-	Specific heat capacity refrigerant	[J/kgK]
10:	dtLmtd	-	Logarithmic mean temperature difference	[K]
11:	q_a	-	Heat flow density	[W/m²]

See also:

hxSub - Subcooling heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Secondary fluid mass flow rate

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecIn	-	Inlet secondary fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	mRfr	-	Refrigerant mass flow rate	[kg/s]
7:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	tRfrIn	-	Inlet refrigerant temperature	[°C]
4:	tRfrOut	-	Outlet refrigerant temperature	[°C]
5:	ua	-	UA value	[W/K]
6:	tRfrAv	-	Mean refrigerant temperature	[°C]
7:	tSecAv	-	Mean secondary fluid temperature	[°C]
8:	cpRfr	-	Specific heat capacity refrigerant	[J/kgK]
9:	dtLmtd	-	Logarithmic mean temperature difference	[K]
10:	q_a	-	Heat flow density	[W/m²]

See also:

cndNorm - Standard condenser

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Secondary fluid mass flow rate and Heat flow density

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecIn	-	Inlet secondary fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	mSec	-	Secondary fluid mass flow rate	[kg/s]
7:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	ua	-	UA value	[W/K]
4:	mcpSec	-	m*cp value secondary fluid	[W/K]
5:	tRfrIn	-	Inlet refrigerant temperature	[°C]
6:	tRfrOut	-	Outlet refrigerant temperature	[°C]
7:	pRfr	-	Refrigerant pressure	[N/m²]
8:	tSecAv	-	Mean secondary fluid temperature	[°C]
9:	dtLmtd	-	Logarithmic mean temperature difference	[K]
10:	q_a	-	Heat flow density	[W/m²]

See also:

cndExt - Accurate condenser

Data:

1:	aRfr	-	Refrigerant side area	[m²]
2:	aSec	-	Secondary fluid side area	[m²]
3:	lRfr	-	Refrigerant side flow length	[m]
4:	lSec	-	Secondary fluid side flow length	[m]
5:	uRfrL	-	Liquid phase heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Refrigerant temperature
6:	uRfrX	-	Two-phase heat transfer coefficient	[W/m²K]	function of Heat flow density and Refrigerant temperature
7:	uRfrG	-	Gas phase heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Refrigerant temperature
8:	uSec	-	Secondary fluid heat transfer coeff.	[W/m²K]	function of Secondary fluid mass flow rate and Secondary fluid temperature
9:	dpdlRfrL	-	Liquid phase pressure gradient	[N/m�]	function of Refrigerant mass flow rate and Refrigerant temperature
10:	dpdlRfrX	-	Two-phase pressure gradient	[N/m�]	function of Heat flow density and Refrigerant temperature
11:	dpdlRfrG	-	Gas phase pressure gradient	[N/m�]	function of Refrigerant mass flow rate and Refrigerant temperature
12:	dpdlSec	-	Secondary fluid pressure gradient	[N/m�]	function of Secondary fluid mass flow rate and Secondary fluid temperature

13:

Number of exchanger sections

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet
3:	Secondary fluid inlet
4:	Secondary fluid outlet

Initial values:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	q_a	-	Heat flow density	[W/m²]
3:	tSec	-	Secondary fluid temperature	[°C]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
6:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
7:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
8:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
9:	mRfr	-	Refrigerant mass flow rate	[kg/s]
10:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Secondary fluid temperature
2:	q	-	Performance	[W]
3:	uaEquiv	-	Equivalent UA value	[W/K]
4:	mcpSec	-	m*cp value secondary fluid	[W/K]
5:	tRfr	-	Refrigerant temperature	[°C]
6:	tRfrIn	-	Inlet refrigerant temperature	[°C]
7:	tRfrOut	-	Outlet refrigerant temperature	[°C]
8:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
9:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
10:	dpRfr-	-	Refrigerant pressure drop	[N/m²]
11:	tSec	-	Secondary fluid temperature	[°C]
12:	dpSec-	-	Secondary fluid pressure drop	[N/m²]
13:	dtAv	-	Mean temperature difference	[K]
14:	q_a	-	Heat flow density	[W/m²]

See also:

evpNorm - Standard evaporator

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Secondary fluid mass flow rate and Heat flow density

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet
3:	Refrigerant inlet
4:	Refrigerant outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecIn	-	Inlet secondary fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	mSec	-	Secondary fluid mass flow rate	[kg/s]
7:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	ua	-	UA value	[W/K]
4:	mcpSec	-	m*cp value secondary fluid	[W/K]
5:	tRfrIn	-	Inlet refrigerant temperature	[°C]
6:	tRfrOut	-	Outlet refrigerant temperature	[°C]
7:	pRfr	-	Refrigerant pressure	[N/m²]
8:	tSecAv	-	Mean secondary fluid temperature	[°C]
9:	dtLmtd	-	Logarithmic mean temperature difference	[K]
10:	q_a	-	Heat flow density	[W/m²]

See also:

evpExt - Accurate evaporator

Data:

1:	aRfr	-	Refrigerant side area	[m²]
2:	aSec	-	Secondary fluid side area	[m²]
3:	lRfr	-	Refrigerant side flow length	[m]
4:	lSec	-	Secondary fluid side flow length	[m]
5:	uRfrL	-	Liquid phase heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Refrigerant temperature
6:	uRfrX	-	Two-phase heat transfer coefficient	[W/m²K]	function of Refrigerant side heat flow density and Refrigerant temperature
7:	uRfrG	-	Gas phase heat transfer coefficient	[W/m²K]	function of Refrigerant mass flow rate and Refrigerant temperature
8:	uSec	-	Secondary fluid heat transfer coeff.	[W/m²K]	function of Secondary fluid mass flow rate and Secondary fluid temperature
9:	dpdlRfrL	-	Liquid phase pressure gradient	[N/m�]	function of Refrigerant mass flow rate and Refrigerant temperature
10:	dpdlRfrX	-	Two-phase pressure gradient	[N/m�]	function of Refrigerant side heat flow density and Refrigerant temperature
11:	dpdlRfrG	-	Gas phase pressure gradient	[N/m�]	function of Refrigerant mass flow rate and Refrigerant temperature
12:	dpdlSec	-	Secondary fluid pressure gradient	[N/m�]	function of Secondary fluid mass flow rate and Secondary fluid temperature

13:

Number of exchanger sections

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet
3:	Refrigerant inlet
4:	Refrigerant outlet

Initial values:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	q_aRfr	-	Refrigerant side heat flow density	[W/m²]
3:	tSec	-	Secondary fluid temperature	[°C]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	tSecIn	-	Inlet secondary fluid temperature	[°C]
4:	tSecOut	-	Outlet secondary fluid temperature	[°C]
5:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
6:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
7:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
8:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
9:	mRfr	-	Refrigerant mass flow rate	[kg/s]
10:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Secondary fluid temperature
2:	q	-	Performance	[W]
3:	uaEquiv	-	Equivalent UA value	[W/K]
4:	mcpSec	-	m*cp value secondary fluid	[W/K]
5:	tRfr	-	Refrigerant temperature	[°C]
6:	tRfrIn	-	Inlet refrigerant temperature	[°C]
7:	tRfrOut	-	Outlet refrigerant temperature	[°C]
8:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
9:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
10:	dpRfr-	-	Refrigerant pressure drop	[N/m²]
11:	tSec	-	Secondary fluid temperature	[°C]
12:	dpSec-	-	Secondary fluid pressure drop	[N/m²]
13:	dtAv	-	Mean temperature difference	[K]
14:	q_aRfr	-	Refrigerant side heat flow density	[W/m²]

See also:

evpHum - Evaporator for air drying

Data:

Contact factor

[-]

function of Inlet air specific enthalpy and Dew-point temperature

Connectors:

1:	Humid air inlet
2:	Humid air outlet
3:	Refrigerant inlet
4:	Refrigerant outlet

Initial values:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	xHumIn	-	Inlet air absolute humidity	[-]
3:	tHumOut	-	Outlet humid air temperature	[°C]
4:	xHumOut	-	Outlet air absolute humidity	[-]
5:	tDP	-	Dew-point temperature	[°C]

Variables:

1:	tHumIn	-	Inlet humid air temperature	[°C]
2:	tHumOut	-	Outlet humid air temperature	[°C]
3:	tDP	-	Dew-point temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	xHumIn	-	Inlet air absolute humidity	[-]
7:	xHumOut	-	Outlet air absolute humidity	[-]
8:	mHum	-	Mass flow rate humid air	[kg/s]
9:	mRfr	-	Refrigerant mass flow rate	[kg/s]
10:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

1:	q	-	Performance	[W]
2:	qDry	-	Dry capacity	[W]
3:	qWater	-	Condensation capacity	[W]
4:	mWater	-	Condensed water vapour	[kg/s]
5:	rhHumIn	-	Inlet relative humidity	[-]
6:	rhHumOut	-	Outlet relative humidity	[-]
7:	hHumIn	-	Inlet air specific enthalpy	[J/kg]
8:	hHumOut	-	Outlet air specific enthalpy	[J/kg]
9:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

evpHumN - Evaporator for humid air

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Mass flow rate humid air and Heat flow density

Connectors:

1:	Humid air inlet
2:	Humid air outlet
3:	Refrigerant inlet
4:	Refrigerant outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	xHumIn	-	Inlet air absolute humidity	[-]
3:	tHumAv	-	Mean temperature humid air	[°C]
4:	dtLmtd	-	Logarithmic mean temperature difference	[K]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tHumIn	-	Inlet humid air temperature	[°C]
3:	tHumOut	-	Outlet humid air temperature	[°C]
4:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
5:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
6:	xHumIn	-	Inlet air absolute humidity	[-]
7:	xHumOut	-	Outlet air absolute humidity	[-]
8:	mHum	-	Mass flow rate humid air	[kg/s]
9:	mRfr	-	Refrigerant mass flow rate	[kg/s]
10:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

1:	cpAir	-	Specific heat capacity dry air	[J/kgK]	fluid parameter function of Mean temperature humid air
2:	q	-	Performance	[W]
3:	qDry	-	Dry capacity	[W]
4:	qWater	-	Condensation capacity	[W]
5:	mWater	-	Condensed water vapour	[kg/s]
6:	rhAirIn	-	Inlet air relative humidity	[-]
7:	rhAirOut	-	Outlet air relative humidity	[-]
8:	hHumIn	-	Inlet air specific enthalpy	[J/kg]
9:	hHumOut	-	Outlet air specific enthalpy	[J/kg]
10:	ua	-	UA value	[W/K]
11:	mcpHum	-	m*cp value	[W/K]
12:	tHumAv	-	Mean temperature humid air	[°C]
13:	dtLmtd	-	Logarithmic mean temperature difference	[K]
14:	q_a	-	Heat flow density	[W/m²]
15:	pRfr	-	Refrigerant pressure	[N/m²]
16:	rQ	-	Contact factor	[-]

See also:

Heat exchangers - Refrigerant(s) only

cndCap - Condenser with given capacity

Data:

Performance

[W]

function of Time

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

pRfr

Refrigerant pressure

[N/m²]

See also:

evpQ - Evaporator with given capacity

Data:

Performance

[W]

function of Time

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

pRfr

Refrigerant pressure

[N/m²]

See also:

evpCap - Air cooler with given capacity

Data:

1:	a	-	Area	[m²]
2:	tAirIn	-	Inlet air temperature	[°C]	function of Time
3:	rhAirIn	-	Inlet air relative humidity	[-]	function of Time
4:	vAir	-	Air volume flow	[m³/s]	function of Time
5:	q	-	Performance	[W]	function of Dew-point temperature and Heat flow density
6:	m/ARfr	-	Refrigerant mass flow density	[kg/m²s]	function of Heat flow density and Dew-point temperature

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	dtAirDP	-	tAir-tDP	[K]
2:	u(dt)	-	U value based on dtAirDP	[W/m²K]
3:	tRfrOut	-	Outlet refrigerant temperature	[°C]
4:	pRfr	-	Refrigerant pressure	[N/m²]
5:	q_a	-	Heat flow density	[W/m²]

See also:

hxSctGas - Suction gas heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Upper pressure mass flow rate and Heat flow density

Connectors:

1:	Upper pressure inlet
2:	Upper pressure outlet
3:	Lower pressure inlet
4:	Lower pressure outlet

Initial values:

1:	tBPHi	-	Upper pressure bubble-point	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tBPHi	-	Upper pressure bubble-point	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	hHiIn	-	Upper pressure inlet specific enthalpy	[J/kg]
4:	hHiOut	-	Upper pressure outlet specific enthalpy	[J/kg]
5:	hLoIn	-	Lower pressure inlet specific enthalpy	[J/kg]
6:	hLoOut	-	Lower pressure outlet specific enthalpy	[J/kg]
7:	mRfrHi	-	Upper pressure mass flow rate	[kg/s]
8:	mRfrLo	-	Lower pressure mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]
2:	tHiIn	-	Upper pressure inlet temperature	[°C]
3:	tHiOut	-	Upper pressure outlet temperature	[°C]
4:	pRfrHi	-	Upper pressure	[N/m²]
5:	tLoIn	-	Lower pressure inlet temperature	[°C]
6:	tLoOut	-	Lower pressure outlet temperature	[°C]
7:	pRfrLo	-	Lower pressure	[N/m²]
8:	ua	-	UA value	[W/K]
9:	tHiAv	-	Upper pressure mean temperature	[°C]
10:	tLoAv	-	Lower pressure mean temperature	[°C]
11:	cpHi	-	Upper pressure specific heat capacity	[J/kgK]
12:	cpLo	-	Lower pressure specific heat capacity	[J/kgK]
13:	dtLmtd	-	Logarithmic mean temperature difference	[K]
14:	q_a	-	Heat flow density	[W/m²]

See also:

hxOilRet - Oil return heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Upper pressure mass flow rate and Heat flow density

Connectors:

1:	Upper pressure liquid inlet
2:	Upper pressure liquid outlet
3:	Lower pressure two-phase inlet
4:	Lower pressure two-phase outlet

Initial values:

1:	tBPHi	-	Upper pressure bubble-point	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tBPHi	-	Upper pressure bubble-point	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	hHiIn	-	Upper pressure inlet specific enthalpy	[J/kg]
4:	hHiOut	-	Upper pressure outlet specific enthalpy	[J/kg]
5:	hLoIn	-	Lower pressure inlet specific enthalpy	[J/kg]
6:	hLoOut	-	Lower pressure outlet specific enthalpy	[J/kg]
7:	mRfrHi	-	Upper pressure mass flow rate	[kg/s]
8:	mRfrLo	-	Lower pressure mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]
2:	cpRfrHi	-	Upper pressure specific heat capacity	[J/kgK]
3:	ua	-	UA value	[W/K]
4:	tHiAv	-	Upper pressure mean temperature	[°C]
5:	dtLmtd	-	Logarithmic mean temperature difference	[K]
6:	q_a	-	Heat flow density	[W/m²]

See also:

hxCasc - Cascade heat exchanger

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Heat flow density and Coil dew-point temperature

Connectors:

1:	Heat donor inlet
2:	Heat donor outlet
3:	Heat receptor inlet
4:	Heat receptor outlet

Initial values:

1:	tDPHi	-	Coil dew-point temperature	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tDPHi	-	Coil dew-point temperature	[°C]
2:	tDPLo	-	Lower pressure dew-point temperature	[°C]
3:	hHiIn	-	Upper pressure inlet specific enthalpy	[J/kg]
4:	hHiOut	-	Upper pressure outlet specific enthalpy	[J/kg]
5:	hLoIn	-	Lower pressure inlet specific enthalpy	[J/kg]
6:	hLoOut	-	Lower pressure outlet specific enthalpy	[J/kg]
7:	mRfrHi	-	Upper pressure mass flow rate	[kg/s]
8:	mRfrLo	-	Lower pressure mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]
2:	tHiIn	-	Upper pressure inlet temperature	[°C]
3:	tHiOut	-	Upper pressure outlet temperature	[°C]
4:	tLoIn	-	Lower pressure inlet temperature	[°C]
5:	tLoOut	-	Lower pressure outlet temperature	[°C]
6:	ua	-	UA value	[W/K]
7:	dtHiLo	-	Dew-point temperature difference	[°C]
8:	q_a	-	Heat flow density	[W/m²]

See also:

Heat exchangers - No fluid flow

hxTemp - Temperature boundary component

Data:

Area

[m²]

No connectors
Initial values:

tSurf

Surface temperature

[°C]

No variables
Parameters:

1:	tSurf	-	Surface temperature	[°C]	controllable parameter
2:	q_a	-	Heat flow density	[W/m²]
3:	q	-	Performance	[W]

See also:

hxConv - Convective boundary component

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Ambient temperature and Temperature difference

No connectors
Initial values:

tAmb

Ambient temperature

[°C]

No variables
Parameters:

1:	tAmb	-	Ambient temperature	[°C]	controllable parameter
2:	q_a	-	Heat flow density	[W/m²]
3:	q	-	Performance	[W]
4:	dt	-	Temperature difference	[K]

See also:

hxFlux - Heat flux load

Data:

Area

[m²]

No connectors
Initial values:

q_a

Heat flow density

[W/m²]

No variables
Parameters:

1:	q_a	-	Heat flow density	[W/m²]	controllable parameter
2:	q	-	Performance	[W]
3:	t	-	Temperature	[°C]

See also:

hxClima - Outdoor climate

Data:

1:	a	-	Area	[m²]
2:	lObserve	-	Observation height over surface	[m]
3:	lWatMax	-	Maximum surface water level	[m]
4:	tAir	-	Air temperature	[°C]	function of Time
5:	velWind	-	Wind speed	[m/s]	function of Time
6:	rhAir	-	Air relative humidity	[-]	function of Time
7:	rCover	-	Cloud cover	[-]	function of Time
8:	lCloud	-	Lower cloud height	[m]	function of Time
9:	velPrec	-	Precipitation	[mm/day]	function of Time
10:	qGlobal	-	Global radiation	[W/m²]	function of Time

Connectors:

1:	Outdoor fluid

Initial values:

lWat

Surface water level

[m]

Variables:

1:	tAir	-	Air temperature	[°C]
2:	xAir	-	Absolute humidity	[-]
3:	pAir	-	Air pressure	[N/m²]

Parameters:

1:	q	-	Performance	[W]
2:	q_a	-	Heat flow density	[W/m²]
3:	qConv	-	Convection heat flow density	[W/m²]
4:	qCond	-	Humidity heat flow density	[W/m²]
5:	qSW	-	Short-wave net irradiance	[W/m²]
6:	qLW	-	Long-wave net irradiance	[W/m²]
7:	qPrec	-	Precipitation heat transfer	[W/m²]
8:	tSurf	-	Surface temperature	[°C]
9:	dtAS	-	Air to surface temperature difference	[K]
10:	eSW	-	Short-wave emissivity	[-]
11:	eLW	-	Longwave emissivity	[-]
12:	lWat	-	Surface water level	[m]

See also:

References:
Frank
Martin
IEA94

Flash chambers

hxSep - Phase separator for refrigerants

No data
Connectors:

1:	Inlet
2:	Liquid port
3:	Gas port

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	xRfrIn	-	Inlet vapour fraction	[-]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrLiq	-	Liquid port specific enthalpy	[J/kg]
4:	hRfrGas	-	Gas port specific enthalpy	[J/kg]
5:	mRfrIn	-	Inlet mass flow rate	[kg/s]
6:	mRfrLiq	-	Liquid port mass flow rate	[kg/s]
7:	mRfrGas	-	Gas port mass flow rate	[kg/s]

Parameters:

1:	xRfrIn	-	Inlet vapour fraction	[-]
2:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

fchOpn3 - Open flash tank with 3 ports

No data
Connectors:

1:	Inlet
2:	Liquid port
3:	Gas port

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	xRfrIn	-	Inlet vapour fraction	[-]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrLiq	-	Liquid port specific enthalpy	[J/kg]
4:	hRfrGas	-	Gas port specific enthalpy	[J/kg]
5:	mRfrIn	-	Inlet mass flow rate	[kg/s]
6:	mRfrLiq	-	Liquid port mass flow rate	[kg/s]
7:	mRfrGas	-	Gas port mass flow rate	[kg/s]

Parameters:

1:	xRfrIn	-	Inlet vapour fraction	[-]
2:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

fchOpn4 - Open flash tank with 4 ports

No data
Connectors:

1:	Gas (or two-phase) inlet
2:	Saturated liquid outlet
3:	Two-phase (or liquid) inlet
4:	Saturated gas outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	xIn	-	Inlet gas fraction	[-]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hLoIn	-	Lower pressure inlet specific enthalpy	[J/kg]
3:	hLoOut	-	Lower pressure outlet specific enthalpy	[J/kg]
4:	hHiIn	-	Upper pressure inlet specific enthalpy	[J/kg]
5:	hHiOut	-	Upper pressure outlet specific enthalpy	[J/kg]
6:	mRfrLo	-	Lower pressure mass flow rate	[kg/s]
7:	mRfrHi	-	Upper pressure mass flow rate	[kg/s]

Parameters:

1:	xIn	-	Inlet gas fraction	[-]
2:	tBP	-	Bubble-point temperature	[°C]
3:	pRfr	-	Refrigerant pressure	[N/m²]

See also:

fchCls4 - Closed flash tank with 4 ports

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Heat flow density and Upper pressure mass flow rate

Connectors:

1:	Coil inlet
2:	Coil outlet
3:	Chamber inlet
4:	Chamber outlet

Initial values:

1:	tDPLo	-	Lower pressure dew-point temperature	[°C]
2:	tDPHi	-	Coil dew-point temperature	[°C]
3:	tHiAv	-	Upper pressure mean temperature	[°C]
4:	q_a	-	Heat flow density	[W/m²]

Variables:

1:	tDPLo	-	Lower pressure dew-point temperature	[°C]
2:	tDPHi	-	Coil dew-point temperature	[°C]
3:	hLoIn	-	Lower pressure inlet specific enthalpy	[J/kg]
4:	hLoOut	-	Lower pressure outlet specific enthalpy	[J/kg]
5:	hHiIn	-	Upper pressure inlet specific enthalpy	[J/kg]
6:	hHiOut	-	Upper pressure outlet specific enthalpy	[J/kg]
7:	mRfrLo	-	Lower pressure mass flow rate	[kg/s]
8:	mRfrHi	-	Upper pressure mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]
2:	tLoIn	-	Lower pressure inlet temperature	[°C]
3:	tLoOut	-	Lower pressure outlet temperature	[°C]
4:	tHiIn	-	Upper pressure inlet temperature	[°C]
5:	tHiOut	-	Upper pressure outlet temperature	[°C]
6:	tHiAv	-	Upper pressure mean temperature	[°C]
7:	pRfrLo	-	Lower pressure	[N/m²]
8:	pRfrHi	-	Upper pressure	[N/m²]
9:	ua	-	UA value	[W/K]
10:	dtLmtd	-	Logarithmic mean temperature difference	[K]
11:	q_a	-	Heat flow density	[W/m²]

See also:

fchCool3 - Cooled flash tank

Data:

1:	a	-	Area	[m²]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Secondary fluid mass flow rate and Heat flow density

Connectors:

1:	Refrigerant inlet
2:	Refrigerant liquid port
3:	Refrigerant gas port
4:	Secondary fluid inlet
5:	Secondary fluid outlet

Initial values:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]
3:	q_a	-	Heat flow density	[W/m²]
4:	xRfrIn	-	Inlet vapour fraction	[-]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	tSecIn	-	Inlet secondary fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	hIn	-	Inlet specific enthalpy	[J/kg]
5:	hLiq	-	Liquid port specific enthalpy	[J/kg]
6:	hGas	-	Gas port specific enthalpy	[J/kg]
7:	mSec	-	Secondary fluid mass flow rate	[kg/s]
8:	mRfrIn	-	Inlet mass flow rate	[kg/s]
9:	mRfrLiq	-	Liquid port mass flow rate	[kg/s]
10:	mRfrGas	-	Gas port mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	ua	-	UA value	[W/K]
4:	mcpSec	-	m*cp value secondary fluid	[W/K]
5:	tRfrIn	-	Inlet refrigerant temperature	[°C]
6:	pRfr	-	Refrigerant pressure	[N/m²]
7:	tSecAv	-	Mean secondary fluid temperature	[°C]
8:	dtLmtd	-	Logarithmic mean temperature difference	[K]
9:	q_a	-	Heat flow density	[W/m²]
10:	xRfrIn	-	Inlet vapour fraction	[-]

See also:

Heaters

blrNorm - Standard boiler

Data:

1:	qMx	-	Maximum capacity	[W]
2:	rEff	-	Efficiency	[-]	function of Relative capacity

Number of capacity steps

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	q	-	Performance	[W]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]	controllable parameter
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	qCombust	-	Combustion heat	[W]
5:	rq	-	Relative capacity	[-]

Mathematical model description

blrOil - Oil-fired boiler

Data:

1:	qMx	-	Maximum capacity	[W]
2:	rEff	-	Efficiency	[-]	function of Relative capacity

Number of capacity steps

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet
3:	Oil inlet

Initial values:

1:	q	-	Performance	[W]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]
4:	mOil	-	Oil mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	fvOil	-	Oil fuel value	[J/kg]	fluid parameter function of Mean secondary fluid temperature
3:	q	-	Performance	[W]	controllable parameter
4:	tSecAv	-	Mean secondary fluid temperature	[°C]
5:	qCombust	-	Combustion heat	[W]
6:	rq	-	Relative capacity	[-]

Mathematical model description

blrEl - Electric boiler

Data:

1:	qMx	-	Maximum capacity	[W]
2:	rEff	-	Efficiency	[-]	function of Relative capacity

Number of capacity steps

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet
3:	Electrical power inlet

Initial values:

1:	q	-	Performance	[W]
2:	tSecAv	-	Mean secondary fluid temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	wEl	-	Electrical power	[W]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]	controllable parameter
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	rq	-	Relative capacity	[-]

Mathematical model description

blrMix - Mixing chamber and post heater

No data
Connectors:

1:	Secondary fluid inlet
2:	Cold fluid inlet
3:	Secondary fluid outlet

Initial values:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecExt	-	Cold fluid temperature	[°C]
3:	tSecReq	-	Requested outlet temperature	[°C]
4:	mSecOut	-	Outlet mass flow rate	[kg/s]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecExt	-	Cold fluid temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	mSecIn	-	Inlet mass flow rate	[kg/s]
5:	mSecExt	-	Cold fluid mass flow rate	[kg/s]
6:	mSecOut	-	Outlet mass flow rate	[kg/s]

Parameters:

1:	cpSecIn	-	Inlet specific heat capacity	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	tSecReq	-	Requested outlet temperature	[°C]	controllable parameter
3:	mSecReq	-	Requested mass flow rate	[kg/s]	controllable parameter
4:	qIn	-	Heat supply to fluid	[W]
5:	tSecAv	-	Mean secondary fluid temperature	[°C]

Mathematical model description

Heat storage components

accNorm - Storage tank

Data:

volAcc

Accumulator volume

[m³]

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

tAcc

Accumulator temperature

[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSecIn	-	Inlet specific heat capacity	[J/kgK]	fluid parameter function of Inlet secondary fluid temperature
2:	cpSecOut	-	Outlet specific heat capacity	[J/kgK]	fluid parameter function of Outlet secondary fluid temperature
3:	densSec	-	Secondary fluid density	[kg/m³]	fluid parameter function of Accumulator temperature
4:	tAcc	-	Accumulator temperature	[°C]
5:	massAcc	-	Accumulator fluid mass	[kg]

Mathematical model description

accQ - Heated storage tank

Data:

volAcc

Accumulator volume

[m³]

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	q	-	Performance	[W]
2:	tAcc	-	Accumulator temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSecIn	-	Inlet specific heat capacity	[J/kgK]	fluid parameter function of Inlet secondary fluid temperature
2:	cpSecOut	-	Outlet specific heat capacity	[J/kgK]	fluid parameter function of Outlet secondary fluid temperature
3:	densSec	-	Secondary fluid density	[kg/m³]	fluid parameter function of Inlet secondary fluid temperature
4:	q	-	Performance	[W]	controllable parameter
5:	tAcc	-	Accumulator temperature	[°C]
6:	massAcc	-	Accumulator fluid mass	[kg]

Mathematical model description

accStrat - Stratified storage tank

Data:

1:	volAcc	-	Accumulator volume	[m³]
2:	dz	-	Tank height	[m]

Connectors:

1:	Lower inlet
2:	Upper inlet
3:	Lower outlet
4:	Upper outlet

Initial values:

1:	tLoAcc	-	Lower tank temperature	[°C]
2:	tHiAcc	-	Upper tank temperature	[°C]

Variables:

1:	tLoIn	-	Lower pressure inlet temperature	[°C]
2:	tHiIn	-	Upper pressure inlet temperature	[°C]
3:	tLoOut	-	Lower pressure outlet temperature	[°C]
4:	tHiOut	-	Upper pressure outlet temperature	[°C]
5:	mLoIn	-	Lower inlet mass flow rate	[kg/s]
6:	mHiIn	-	Upper inlet mass flow rate	[kg/s]
7:	mLoOut	-	Lower outlet mass flow rate	[kg/s]
8:	mHiOut	-	Upper outlet mass flow rate	[kg/s]

Parameters:

1:	tLoAcc	-	Lower tank temperature	[°C]
2:	tHiAcc	-	Upper tank temperature	[°C]
3:	massAcc	-	Accumulator fluid mass	[kg]
4:	mUp	-	Upward tank mass flow rate	[kg/s]

See also:

accStrQ - Heated stratified storage tank

Data:

1:	volAcc	-	Accumulator volume	[m³]
2:	dz	-	Tank height	[m]
3:	zLo	-	Lower heater position	[m]
4:	zHi	-	Upper heater position	[m]

Connectors:

1:	Lower inlet
2:	Upper inlet
3:	Lower outlet
4:	Upper outlet

Initial values:

1:	q	-	Performance	[W]
2:	tLoAcc	-	Lower tank temperature	[°C]
3:	tHiAcc	-	Upper tank temperature	[°C]

Variables:

1:	tLoIn	-	Lower pressure inlet temperature	[°C]
2:	tHiIn	-	Upper pressure inlet temperature	[°C]
3:	tLoOut	-	Lower pressure outlet temperature	[°C]
4:	tHiOut	-	Upper pressure outlet temperature	[°C]
5:	mLoIn	-	Lower inlet mass flow rate	[kg/s]
6:	mHiIn	-	Upper inlet mass flow rate	[kg/s]
7:	mLoOut	-	Lower outlet mass flow rate	[kg/s]
8:	mHiOut	-	Upper outlet mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]	controllable parameter
2:	tLoAcc	-	Lower tank temperature	[°C]
3:	tHiAcc	-	Upper tank temperature	[°C]
4:	M	-	Mass	[kg]
5:	mUp	-	Upward tank mass flow rate	[kg/s]

See also:

accQ1D - 1D heat source/sink

Data:

Area

[m²]

No connectors
No initial values
No variables
Parameters:

1:	tSurf1	-	Temperature surface 1	[°C]
2:	tSurf2	-	Temperature surface 2	[°C]
3:	tAv	-	Geometrical mean temperature	[°C]
4:	tAvH	-	Enthalpical mean temperature	[°C]
5:	qSurf1	-	Heat flux surface 1	[W/m²]
6:	qSurf2	-	Heat flux surface 2	[W/m²]

See also:

accWall - Heat-conducting wall

Data:

1:	lWall	-	Wall length	[m]
2:	zWall	-	Wall height	[m]

No connectors
No initial values
No variables
Parameters:

1:	tSurf1	-	Temperature surface 1	[°C]
2:	tSurf2	-	Temperature surface 2	[°C]
3:	tAv	-	Geometrical mean temperature	[°C]
4:	tAvH	-	Enthalpical mean temperature	[°C]
5:	qSurf1	-	Heat flux surface 1	[W/m²]
6:	qSurf2	-	Heat flux surface 2	[W/m²]
7:	a	-	Area	[m²]
8:	qSurf	-	[qSurf]	[W]

See also:

accZone - Temperature zone

Data:

1:	dzZone	-	Zone depth	[m]
2:	u	-	Overall heat transfer coefficient	[W/m²K]	function of Air to surface temperature difference and Zone temperature

Connectors:

1:	Infiltration

Initial values:

1:	tZone	-	Zone temperature	[°C]
2:	dtAS	-	Air to surface temperature difference	[K]

Variables:

1:	tZone	-	Zone temperature	[°C]
2:	mZone	-	Net mass flow rate entering zone	[kg/s]

Parameters:

1:	cpZone	-	Zone specific heat capacity	[J/kgK]	fluid parameter function of Zone temperature
2:	densZone	-	Zone density	[kg/m³]	fluid parameter function of Zone temperature
3:	MZone	-	Zone fluid mass	[kg]
4:	aWF	-	Wall and floor area	[m²]
5:	dtAS	-	Air to surface temperature difference	[K]
6:	qExt	-	External heat transfer	[W]
7:	qInt	-	Internal heating	[W]
8:	qTemp	-	Sensible heat change	[W]
9:	dq	-	Net heat transfer	[W]

Mathematical model description

srcT - Temperature source

Data:

tSource

Source temperature

[°C]

function of Time

Connectors:

1:	Temperature source outlet 1
2:	Temperature source outlet 2
3:	Temperature source outlet 3
4:	Temperature source outlet 4
5:	Temperature source outlet 5

No initial values
Variables:

1:	tSource1	-	Source temperature 1	[°C]
2:	tSource2	-	Source temperature 2	[°C]
3:	tSource3	-	Source temperature 3	[°C]
4:	tSource4	-	Source temperature 4	[°C]
5:	tSource5	-	Source temperature 5	[°C]
6:	mSource1	-	Source 1 mass flow rate	[kg/s]
7:	mSource2	-	Source 2 mass flow rate	[kg/s]
8:	mSource3	-	Source 3 mass flow rate	[kg/s]
9:	mSource4	-	Source 4 mass flow rate	[kg/s]
10:	mSource5	-	Source 5 mass flow rate	[kg/s]

No parameters

Mathematical model description

Throttle valves

vlvThr - Throttle valve

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

No parameters

See also:

vlvBack - Back-up valve

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

Initial values:

tDPInMn

Inlet minimum dew-point temperature

[°C]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	tDPInMn	-	Inlet minimum dew-point temperature	[°C]	controllable parameter
2:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
3:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]

See also:

Resistor tubes

pipSec - Resistor for secondary fluid circuit

Data:

1:	dpNom-	-	Nominal pressure drop	[N/m²]
2:	mSecNom	-	Nominal mass flow rate	[kg/s]

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

mSec

Secondary fluid mass flow rate

[kg/s]

Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
3:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

dpSec-

Secondary fluid pressure drop

[N/m²]

Mathematical model description

pipSecDL - Secondary fluid tube with pressure drop

Data:

1:	lDiam	-	Diameter	[m]
2:	lRough	-	Roughness height	[m]
3:	lPipe	-	Equivalent length	[m]

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
3:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	densSec	-	Secondary fluid density	[kg/m³]	fluid parameter function of Secondary fluid temperature
2:	dvSec	-	Secondary fluid dynamic viscosity	[Ns/m²]	fluid parameter function of Secondary fluid temperature
3:	rlRough	-	Relative roughness height	[-]
4:	velSec	-	Velocity	[m/s]
5:	rRe	-	Reynolds number	[-]
6:	rFrict	-	Friction coefficient	[-]
7:	dpSec-	-	Secondary fluid pressure drop	[N/m²]

Mathematical model description

pipSecQ - Pipe with heat loss

Data:

1:	lDiamInt	-	Inner diameter	[m]
2:	lDiamExt	-	External diameter	[m]
3:	lPipe	-	Equivalent length	[m]
4:	tcPipe	-	Pipe thermal conductivity	[W/mK]
5:	uExt	-	External heat transfer coeff.	[W/m²K]
6:	uInt	-	Internal heat transfer coeff.	[W/m²K]	function of Secondary fluid mass flow rate and Mean secondary fluid temperature

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

1:	tSecAv	-	Mean secondary fluid temperature	[°C]
2:	mSec	-	Secondary fluid mass flow rate	[kg/s]
3:	tExt	-	External temperature	[°C]

Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	tExt	-	External temperature	[°C]	controllable parameter
3:	aInt	-	Internal area	[m²]
4:	aExt	-	External area	[m²]
5:	u	-	Overall heat transfer coefficient	[W/m²K]
6:	rUAMCInt	-	Internal u�A/m�cp	[-]
7:	q_	-	Heat loss	[W]
8:	dtLmtd	-	Logarithmic mean temperature difference	[K]
9:	tSecAv	-	Mean secondary fluid temperature	[°C]
10:	q_a	-	Heat flow density	[W/m²]

Mathematical model description

pipRfr - Resistor for refrigerant circuit

Data:

1:	dpNom-	-	Nominal pressure drop	[N/m²]
2:	mRfrNom	-	Nominal mass flow rate	[kg/s]

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

Initial values:

tDPAv

Mean dew-point temperature

[°C]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	tDPAv	-	Mean dew-point temperature	[°C]
2:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
3:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
4:	dpRfr-	-	Refrigerant pressure drop	[N/m²]
5:	dtDP	-	Dew-point temperature change	[K]

See also:

pipRfrDL - Refrigerant tube with pressure drop

Data:

1:	lDiam	-	Diameter	[m]
2:	lRough	-	Roughness height	[m]
3:	lPipe	-	Equivalent length	[m]

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

Initial values:

1:	tDPAv	-	Mean dew-point temperature	[°C]
2:	xRfrAv	-	Mean mass fraction of gas	[-]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	densRfr	-	Refrigerant density	[kg/m³]
2:	dvRfr	-	Refrigerant dynamic viscosity	[Ns/m²]
3:	tDPAv	-	Mean dew-point temperature	[°C]
4:	xRfrAv	-	Mean mass fraction of gas	[-]
5:	velRfr	-	Velocity	[m/s]
6:	rReRfr	-	Reynolds number refrigerant	[-]
7:	rFrict	-	Friction coefficient	[-]
8:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
9:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
10:	dpRfr-	-	Refrigerant pressure drop	[N/m²]
11:	dtDP	-	Dew-point temperature change	[K]
12:	rlRough	-	Relative roughness height	[-]

See also:

pipSecEl - Secondary fluid tube with elevation

Data:

Tank height

[m]

Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

Initial values:

tSec

Secondary fluid temperature

[°C]

Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
3:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	densSec	-	Secondary fluid density	[kg/m³]	fluid parameter function of Secondary fluid temperature
2:	dpSec	-	Secondary fluid pressure change	[N/m²]

Mathematical model description

pipRfrEl - Refrigerant tube with elevation

Data:

Tank height

[m]

Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

Initial values:

1:	tDPAv	-	Mean dew-point temperature	[°C]
2:	xRfrAv	-	Mean mass fraction of gas	[-]

Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	densRfr	-	Refrigerant density	[kg/m³]
2:	dtDP	-	Dew-point temperature change	[°C]
3:	pRfrIn	-	Inlet refrigerant pressure	[N/m²]
4:	pRfrOut	-	Outlet refrigerant pressure	[N/m²]
5:	dpRfr	-	Pressure change	[N/m²]
6:	tDPAv	-	Mean dew-point temperature	[°C]
7:	xRfrAv	-	Mean mass fraction of gas	[-]

See also:

Three-way valves

vlv3wSec - Three-way valve for secondary fluid circuit

No data
Connectors:

1:	Inlet
2:	Outlet 1
3:	Outlet 2

Initial values:

rmOut1

Outlet 1 mass flow fraction

[-]

Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	mSecIn	-	Inlet mass flow rate	[kg/s]
3:	mSecOut1	-	Outlet 1 mass flow rate	[kg/s]
4:	mSecOut2	-	Outlet 2 mass flow rate	[kg/s]

Parameters:

rmOut1

Outlet 1 mass flow fraction

[-]

controllable parameter

Mathematical model description

vlv3wRfr - Three-way valve for refrigerant circuit

No data
Connectors:

1:	Inlet
2:	Outlet 1
3:	Outlet 2

Initial values:

rmOut1

Outlet 1 mass flow fraction

[-]

Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfr	-	Specific enthalpy	[J/kg]
3:	mRfrIn	-	Inlet mass flow rate	[kg/s]
4:	mRfrOut1	-	Outlet 1 mass flow rate	[kg/s]
5:	mRfrOut2	-	Outlet 2 mass flow rate	[kg/s]

Parameters:

rmOut1

Outlet 1 mass flow fraction

[-]

controllable parameter

See also:

Manifolds and headers

maniSec - T-manifold for secondary fluid circuit

No data
Connectors:

1:	Inlet
2:	Outlet 1
3:	Outlet 2

No initial values
Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	mSecIn	-	Inlet mass flow rate	[kg/s]
3:	mSecOut1	-	Outlet 1 mass flow rate	[kg/s]
4:	mSecOut2	-	Outlet 2 mass flow rate	[kg/s]

No parameters

Mathematical model description

headSec - T-header for secondary fluid circuit

No data
Connectors:

1:	Inlet 1
2:	Inlet 2
3:	Outlet

No initial values
Variables:

1:	tSecIn1	-	Inlet 1 temperature	[°C]
2:	tSecIn2	-	Inlet 2 temperature	[°C]
3:	tSecOut	-	Outlet secondary fluid temperature	[°C]
4:	mSecIn1	-	Inlet 1 mass flow rate	[kg/s]
5:	mSecIn2	-	Inlet 2 mass flow rate	[kg/s]
6:	mSecOut	-	Outlet mass flow rate	[kg/s]

No parameters

Mathematical model description

maniRfr - T-manifold for refrigerant circuit

No data
Connectors:

1:	Inlet
2:	Outlet 1
3:	Outlet 2

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfr	-	Specific enthalpy	[J/kg]
3:	mRfrIn	-	Inlet mass flow rate	[kg/s]
4:	mRfrOut1	-	Outlet 1 mass flow rate	[kg/s]
5:	mRfrOut2	-	Outlet 2 mass flow rate	[kg/s]

No parameters

See also:

headRfr - T-header for refrigerants circuit

No data
Connectors:

1:	Inlet 1
2:	Inlet 2
3:	Outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn1	-	Inlet 1 specific enthalpy	[J/kg]
3:	hRfrIn2	-	Inlet 2 specific enthalpy	[J/kg]
4:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
5:	mRfrIn1	-	Inlet 1 mass flow rate	[kg/s]
6:	mRfrIn2	-	Inlet 2 mass flow rate	[kg/s]
7:	mRfrOut	-	Outlet refrigerant mass flow rate	[kg/s]

No parameters

See also:

headHum - T-header for humid air

No data
Connectors:

1:	Inlet 1
2:	Inlet 2
3:	Outlet

Initial values:

rmHumIn1

Inlet 1 mass flow fraction

[-]

Variables:

1:	tHumIn1	-	Humid air Inlet 1 temperature	[°C]
2:	tHumIn2	-	Humid air Inlet 2 temperature	[°C]
3:	tHumOut	-	Outlet humid air temperature	[°C]
4:	xHumIn1	-	Inlet 1 absolute humidity	[-]
5:	xHumIn2	-	Inlet 2 absolute humidity	[-]
6:	xHumOut	-	Outlet air absolute humidity	[-]
7:	mHumIn1	-	Inlet 1 mass flow rate	[kg/s]
8:	mHumIn2	-	Inlet 2 mass flow rate	[kg/s]
9:	mHumOut	-	Outlet mass flow rate	[kg/s]
10:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

rmHumIn1

Inlet 1 mass flow fraction

[-]

See also:

headW - T-header for power

No data
Connectors:

1:	Power input 1
2:	Power input 2
3:	Power output

No initial values
Variables:

1:	wIn1	-	Input power 1	[W]
2:	wIn2	-	Input power 2	[W]
3:	wOut	-	Output power	[W]

No parameters

Mathematical model description

maniSecM - Manifold for secondary fluid circuit
Data:

1: Number of parallels

Connectors:

1: Inlet

2: Outlet

No initial values
Variables:

1: tSec - Secondary fluid temperature [°C]

2: mSecIn - Inlet mass flow rate [kg/s]

3: mSecOut - Outlet mass flow rate [kg/s]

No parameters
Mathematical model description

headSecM - Header for secondary fluid circuit
Data:

1: Number of parallels

Connectors:

1: Inlet

2: Outlet

No initial values
Variables:

1: tSec - Secondary fluid temperature [°C]

2: mSecIn - Inlet mass flow rate [kg/s]

3: mSecOut - Outlet mass flow rate [kg/s]

No parameters

Mathematical model description

Demand components

bldSimpl - Simple building

Data:

1:	aDH	-	Heat transfer area district heating	[m²]
2:	rEffOil	-	Oil boiler efficiency	[-]
3:	rEffBio	-	Bio-fuel boiler efficiency	[-]
4:	wElDem	-	Electrical power demand	[W]	function of Time
5:	qOilDem	-	Oil-based heat demand	[W]	function of Time
6:	qBioDem	-	Biofuel-based heat demand	[W]	function of Time
7:	tIndoor	-	Indoor temperature	[°C]	function of Time
8:	uDH	-	Heat transfer coefficient district heating	[W/m²K]	function of District heating mass flow rate and District heating average temperature

Number of houses

Connectors:

1:	Electrical power inlet
2:	Oil inlet
3:	Biofuel inlet
4:	District heating supply
5:	District heating return

Initial values:

tDHAv

District heating average temperature

[°C]

Variables:

1:	wEl	-	Electrical power	[W]
2:	tDHIn	-	District heating supply temperature	[°C]
3:	tDHOut	-	District heating return temperature	[°C]
4:	mDH	-	District heating mass flow rate	[kg/s]
5:	mOil	-	Oil mass flow rate	[kg/s]
6:	mBio	-	Bio-fuel mass flow rate	[kg/s]

Parameters:

1:	fvOil	-	Oil fuel value	[J/kg]	fluid parameter function of [tIndoor ]
2:	fvBio	-	Biofuel fuel value	[J/kg]	fluid parameter function of [tIndoor ]
3:	cpDH	-	Specific heat capacity district heating water	[J/kgK]	fluid parameter function of District heating average temperature
4:	qDH	-	Heat from district heating	[W]
5:	tDHAv	-	District heating average temperature	[°C]
6:	uaDH	-	UA-value of district heating transfer	[W/K]
7:	qBld	-	Total heat single building	[W]
8:	qBldAll	-	Total heat all buildings	[W]

Mathematical model description

bldResid - Residential house

Data:

1:	aBld	-	Foundation area	[m²]
2:	nResid	-	Number of residentials	[-]
3:	QHeat	-	Heat demand per residential area and temp.diff.	[W/m²K]
4:	QTW	-	[QTW]	[W/m²]
5:	WAppl	-	[WAppl]	[W/m²]
6:	QRad	-	[QRad]	[W/m²]
7:	tIndoor	-	Indoor temperature	[°C]
8:	rEl	-	[rEl]	[-]
9:	rDH	-	[rDH]	[-]
10:	rOil	-	[rOil]	[-]
11:	rBio	-	[rBio]	[-]

12:

Number of houses

Connectors:

1:	Electrical power inlet
2:	District heating supply
3:	District heating return
4:	Oil inlet
5:	Biofuel inlet

No initial values
Variables:

1:	wEl	-	Electrical power	[W]
2:	tDHIn	-	District heating supply temperature	[°C]
3:	tDHOut	-	District heating return temperature	[°C]
4:	tOil	-	[tOil]	[°C]
5:	tBio	-	[tBio]	[°C]
6:	mDH	-	District heating mass flow rate	[kg/s]
7:	mOil	-	Oil mass flow rate	[kg/s]
8:	mBio	-	Bio-fuel mass flow rate	[kg/s]

Parameters:

1:	tAirOut	-	[tAirOut]	[°C]	controllable parameter
2:	qHeat	-	[qHeat]	[W]
3:	qTW	-	[qTW]	[W]
4:	qAppl	-	[qAppl]	[W]
5:	qDH	-	Heat from district heating	[W]
6:	qOil	-	Oil cooling	[W]
7:	qBio	-	[qBio]	[W]
8:	qTot	-	Total heat transfer	[W]

Mathematical model description

Illustrative components

ilVlvSec - Illustrative valve for secondary fluid circuit
No data
Connectors:

1: Secondary fluid inlet

2: Secondary fluid outlet

No initial values
No variables
No parameters
Mathematical model description

ilVlvRfr - Illustrative valve for refrigerant circuit
No data
Connectors:

1: Refrigerant inlet

2: Refrigerant outlet

No initial values
No variables
No parameters

See also:
- Mathematical model description
- Refrigerant library functions
ilFltSec - Illustrative filter for secondary fluid circuit
No data
Connectors:

1: Secondary fluid inlet

2: Secondary fluid outlet

No initial values
No variables
No parameters

Mathematical model description

ilFltRfr - Illustrative filter for refrigerant circuit

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
No variables
No parameters

See also:

Measuring devices

misMeter - Measuring device for refrigerant circuit

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfr	-	Specific enthalpy	[J/kg]
3:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	tRfr	-	Refrigerant temperature	[°C]
2:	pRfr	-	Refrigerant pressure	[N/m²]
3:	tBP	-	Bubble-point temperature	[°C]
4:	rvRfr	-	Relative volume flow	[m³/kg]
5:	sRfr	-	Specific entropy	[J/kgK]
6:	xRfr	-	Vapour mass fraction	[-]
7:	cpRfr	-	Specific heat capacity refrigerant	[J/kgK]
8:	dvRfr	-	Refrigerant dynamic viscosity	[Ns/m²]
9:	tcRfr	-	Thermal conductivity	[W/mK]
10:	vRfr	-	Volume flow rate	[m³/s]
11:	qRfr	-	Heat to refrigerant	[W]

See also:

Adapters

adTSec - Temperature adapter for secondary fluid circuit

No data
Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

No initial values
Variables:

1:	tSecIn	-	Inlet secondary fluid temperature	[°C]
2:	tSecOut	-	Outlet secondary fluid temperature	[°C]
3:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

1:	cpSec	-	Specific heat capacity secondary fluid	[J/kgK]	fluid parameter function of Mean secondary fluid temperature
2:	q	-	Performance	[W]
3:	tSecAv	-	Mean secondary fluid temperature	[°C]
4:	dt	-	Temperature difference	[K]

Mathematical model description

adPSec - Pressure adapter for secondary fluid circuit

No data
Connectors:

1:	Secondary fluid inlet
2:	Secondary fluid outlet

No initial values
Variables:

1:	tSec	-	Secondary fluid temperature	[°C]
2:	pSecIn	-	Inlet secondary fluid pressure	[N/m²]
3:	pSecOut	-	Outlet secondary fluid pressure	[N/m²]
4:	mSec	-	Secondary fluid mass flow rate	[kg/s]

Parameters:

dpSec

Secondary fluid pressure change

[N/m²]

Mathematical model description

adGSec - Mass flow adapter for secondary fluid circuit
No data
Connectors:

1: Secondary fluid inlet

2: Secondary fluid outlet

No initial values
Variables:

1: tSec - Secondary fluid temperature [°C]

2: mSecIn - Inlet mass flow rate [kg/s]

3: mSecOut - Outlet mass flow rate [kg/s]

Parameters:

1: dmSec - Secondary fluid mass flow rate change [kg/s]

Mathematical model description

adXSec - Humidity adapter for secondary fluid circuit

No data
Connectors:

1:	Humid air inlet
2:	Humid air outlet

No initial values
Variables:

1:	tHum	-	Temperature humid air	[°C]
2:	mHum	-	Mass flow rate humid air	[kg/s]
3:	xHumIn	-	Inlet air absolute humidity	[-]
4:	xHumOut	-	Outlet air absolute humidity	[-]
5:	pHum	-	Humid air total pressure	[N/m²]

Parameters:

dxHum

Absolute humidity change

[-]

See also:

adTRfr - Dew-point temp. adapter for refrigerant circuit

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDPIn	-	Inlet dew-point temperature	[°C]
2:	tDPOut	-	Outlet dew-point temperature	[°C]
3:	hRfr	-	Specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	dtDP	-	Dew-point temperature change	[°C]
2:	dpRfr	-	Pressure change	[N/m²]

See also:

adHRfr - Enthalpy adapter for refrigerant circuit

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfrIn	-	Inlet specific enthalpy	[J/kg]
3:	hRfrOut	-	Outlet specific enthalpy	[J/kg]
4:	mRfr	-	Refrigerant mass flow rate	[kg/s]

Parameters:

1:	q	-	Performance	[W]
2:	dh	-	Enthalpy change	[J/kg]

See also:

adGRfr - Mass flow adapter for refrigerant circuit

No data
Connectors:

1:	Refrigerant inlet
2:	Refrigerant outlet

No initial values
Variables:

1:	tDP	-	Dew-point temperature	[°C]
2:	hRfr	-	Specific enthalpy	[J/kg]
3:	mRfrIn	-	Inlet mass flow rate	[kg/s]
4:	mRfrOut	-	Outlet refrigerant mass flow rate	[kg/s]

Parameters:

dmRfr

Refrigerant mass flow rate change

[kg/s]

See also:

adW - Power adapter for power circuit

No data
Connectors:

1:	Power input
2:	Power output

No initial values
Variables:

1:	wIn	-	Input power	[W]
2:	wOut	-	Output power	[W]

Parameters:

Power change

[W]

Mathematical model description

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