Buildings.Fluid.Storage.Ice.Data.Tank

Performance data for ice tank model

Information

This package contains data records that characterize the performance of ice storage tanks. See Buildings.Fluid.Storage.Ice.Tank for the definition of the charging and discharging coefficients.

Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).

Package Content

Name	Description
EnergyPlus	Performance curve obtained from EnergyPlus example
Experiment	Performance curve obtained from onsite experiment
Generic

Buildings.Fluid.Storage.Ice.Data.Tank.EnergyPlus

Performance curve obtained from EnergyPlus example

Information

The performance curves are obtained from the EnergyPlus example idf file: 5ZoneDetailedIceStorage.idf.

Extends from Buildings.Fluid.Storage.Ice.Data.Tank.Generic.

Parameters

Type	Name	Default	Description
SpecificEnergy	Hf	333550	Fusion of heat of ice [J/kg]
Temperature	TFre	273.15	Freezing temperature of water or the latent energy storage material [K]
Mass	mIce_max		Maximum mass of ice in the tank [kg]
Real	coeCha[nCha]	{0.0,0.09,-0.15,0.612,-0.324...	Coefficients for charging curve
Real	coeDisCha[nDisCha]	{0.0,0.09,-0.15,0.612,-0.324...	Coeffcients for discharging curve
Real	dtCha	3600	Time step of curve fitting data
Real	dtDisCha	3600	Time step of curve fitting data

Modelica definition

record EnergyPlus = Buildings.Fluid.Storage.Ice.Data.Tank.Generic ( coeCha={0.0,0.09,-0.15,0.612,-0.324,-0.216}, dtCha=3600, coeDisCha={0.0,0.09,-0.15,0.612,-0.324,-0.216}, dtDisCha=3600) "Performance curve obtained from EnergyPlus example";

Buildings.Fluid.Storage.Ice.Data.Tank.Experiment

Performance curve obtained from onsite experiment

Information

The performance curves are obtained from experiments demonstrated in the following reference.

Reference

Pradhan, Ojas, et.al. "Development and Validation of a Simulation Testbed for the Intelligent Building Agents Laboratory (IBAL) using TRNSYS." ASHRAE Transactions 126 (2020): 458-466.

Li, Guowen, et al. "An Ice Storage Tank Modelica Model: Implementation and Validation." Modelica Conferences. 2021.

Extends from Buildings.Fluid.Storage.Ice.Data.Tank.Generic.

Parameters

Type	Name	Default	Description
SpecificEnergy	Hf	333550	Fusion of heat of ice [J/kg]
Temperature	TFre	273.15	Freezing temperature of water or the latent energy storage material [K]
Mass	mIce_max	2846.35	Maximum mass of ice in the tank [kg]
Real	coeCha[nCha]	{1.76953858E-04,0,0,0,0,0}	Coefficients for charging curve
Real	coeDisCha[nDisCha]	{5.54E-05,-1.45679E-04,9.28E...	Coeffcients for discharging curve
Real	dtCha	10	Time step of curve fitting data
Real	dtDisCha	10	Time step of curve fitting data

Modelica definition

record Experiment = Buildings.Fluid.Storage.Ice.Data.Tank.Generic ( mIce_max = 2846.35, coeCha={1.76953858E-04,0,0,0,0,0}, dtCha=10, coeDisCha={5.54E-05,-1.45679E-04,9.28E-05,1.126122E-03,-1.1012E-03, 3.00544E-04}, dtDisCha=10) "Performance curve obtained from onsite experiment";

Buildings.Fluid.Storage.Ice.Data.Tank.Generic

Information

Performance data for ice tank charging and discharging curves. See Buildings.Fluid.Storage.Ice.Tank for the definition of the charging and discharging coefficients.

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
SpecificEnergy	Hf	333550	Fusion of heat of ice [J/kg]
Temperature	TFre	273.15	Freezing temperature of water or the latent energy storage material [K]
Mass	mIce_max		Maximum mass of ice in the tank [kg]
Real	coeCha[nCha]		Coefficients for charging curve
Real	coeDisCha[nDisCha]		Coeffcients for discharging curve
Real	dtCha		Time step of curve fitting data
Real	dtDisCha		Time step of curve fitting data

Modelica definition

record Generic extends Modelica.Icons.Record; constant Modelica.Units.SI.TemperatureDifference dT_nominal = 10 "Nominal temperature difference used for performance data"; constant Integer nCha = 6 "Number of coefficients for charging characteristic curve"; constant Integer nDisCha = 6 "Number of coefficients for discharging characteristic curve"; parameter Modelica.Units.SI.SpecificEnergy Hf = 333550 "Fusion of heat of ice"; parameter Modelica.Units.SI.Temperature TFre = 273.15 "Freezing temperature of water or the latent energy storage material"; parameter Modelica.Units.SI.Mass mIce_max "Maximum mass of ice in the tank"; parameter Real coeCha[nCha] "Coefficients for charging curve"; parameter Real coeDisCha[nDisCha] "Coeffcients for discharging curve"; parameter Real dtCha "Time step of curve fitting data"; parameter Real dtDisCha "Time step of curve fitting data"; end Generic;