Buildings.Fluid.HeatPumps.Calibration

Package for calibration of heat pump models

Information

This package contains runnable models that are used to calibrate the heat pump models in Buildings.Fluid.HeatPumps.

Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).

Package Content

Name	Description
ScrollWaterToWater	Calibration model for scroll water to water heat pump
BaseClasses	Base classes for calibration of heat pump models

Buildings.Fluid.HeatPumps.Calibration.ScrollWaterToWater

Calibration model for scroll water to water heat pump

Buildings.Fluid.HeatPumps.Calibration.ScrollWaterToWater

Information

Calibration model for the calibration of models for water to water heat pump with scroll compressor.

Source and load temperatures and flow rates are read from an external time table.

This model is called from the Python code that computes heat pump model parameters from the performance data. Heat pump model parameters are obtained through an optimization procedure that minimizes the difference between the modeled and tabulated (from the manufacturers) capacity and power input of the heat pump.

The optimization is done using a Python implementation of the heat pump model, found in Buildings/Resources/src/fluid/heatpumps/calibration/. Heat pump model parameters are verified using this modelica model after their evaluation by the Python code.

Documentation for the Python code can be accessed here.

Extends from Modelica.Icons.Example (Icon for runnable examples), Buildings.Fluid.HeatPumps.Calibration.BaseClasses.PartialWaterToWater (Partial model for calibration of water to water heat pumps).

Parameters

Type	Name	Default	Description
replaceable package Medium1		PartialMedium	Medium model at the condenser side
replaceable package Medium2		PartialMedium	Medium model at the evaporator side
replaceable package ref		R410A	Refrigerant model
MassFlowRate	m1_flow_nominal	1.42	Nominal mass flow rate on condenser side [kg/s]
MassFlowRate	m2_flow_nominal	1.42	Nominal mass flow rate on evaporator side [kg/s]
Pressure	dp1_nominal	1000	Pressure drop at nominal mass flow rate on condenser side [Pa]
Pressure	dp2_nominal	1000	Pressure drop at nominal mass flow rate on evaporator side [Pa]
ThermalConductance	UACon	12000.0	Thermal conductance of condenser [W/K]
ThermalConductance	UAEva	12000.0	Thermal conductance of evaporator [W/K]
Real	volRat	2.0	Built-in volume ratio [1]
VolumeFlowRate	V_flow_nominal	0.009	Refrigerant volume flow rate at suction [m3/s]
MassFlowRate	leaCoe	0.03	Leakage coefficient [kg/s]
Efficiency	etaEle	0.696	Electro-mechanical efficiency of the compressor [1]
Power	PLos	500.0	Constant part of the compressor power losses [W]
TemperatureDifference	dTSup	10.0	Superheating at compressor suction [K]

Connectors

Type	Name	Description
replaceable package Medium1		Medium model at the condenser side
replaceable package Medium2		Medium model at the evaporator side

Modelica definition

model ScrollWaterToWater "Calibration model for scroll water to water heat pump" extends Modelica.Icons.Example; extends Buildings.Fluid.HeatPumps.Calibration.BaseClasses.PartialWaterToWater ( redeclare package Medium1 = Buildings.Media.Water, redeclare package Medium2 = Buildings.Media.Water, redeclare Buildings.Fluid.HeatPumps.ScrollWaterToWater heaPum( datHeaPum( etaEle=etaEle, PLos=PLos, dTSup=dTSup, UACon=UACon, UAEva=UAEva, volRat=volRat, V_flow_nominal=V_flow_nominal, leaCoe=leaCoe)), calDat(tableName="ManufacturerData", fileName=Modelica.Utilities.Files.loadResource( "modelica://Buildings/Resources/src/fluid/heatpumps/calibration/manufacturerData.txt")), UACon = 12000.0, UAEva = 12000.0, m1_flow_nominal=1.42, m2_flow_nominal=1.42); parameter Real volRat(min = 1.0, unit = "1") = 2.0 "Built-in volume ratio"; parameter Modelica.SIunits.VolumeFlowRate V_flow_nominal(min = 0) = 0.009 "Refrigerant volume flow rate at suction"; parameter Modelica.SIunits.MassFlowRate leaCoe(min = 0) = 0.03 "Leakage coefficient"; parameter Modelica.SIunits.Efficiency etaEle = 0.696 "Electro-mechanical efficiency of the compressor"; parameter Modelica.SIunits.Power PLos(min = 0) = 500.0 "Constant part of the compressor power losses"; parameter Modelica.SIunits.TemperatureDifference dTSup(min = 0) = 10.0 "Superheating at compressor suction"; end ScrollWaterToWater;