recordGenericDomesticHotWaterWithHeatExchanger
Equipment specifications for a heating water tank with external heat exchanger to heat domestic hot water
Extends from Modelica.Icons.Record (Icon for records).
Information
This record corresponds to a hot water tank that is filled with heating water, and that has an external heat exchanger to heat domestic hot water.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Tank | |||
| Modelica.Units.SI.Volume | VTan | Tank volume | |
| Advanced › Tank | |||
| Modelica.Units.SI.Length | hTan | 2 | Height of tank (without insulation) |
| Modelica.Units.SI.Length | dIns | 0.3 | Thickness of insulation |
| Modelica.Units.SI.ThermalConductivity | kIns | 0.04 | Specific heat conductivity of insulation |
| Integer | nSeg | 5 | Number of volume segments used to discretize tank |
| Advanced › Heat exchanger | |||
| Modelica.Units.SI.PressureDifference | dpHexHea_nominal | 5000 | Pressure drop across the heat exchanger at nominal conditions on heating water side |
| Modelica.Units.SI.PressureDifference | dpHexDom_nominal | dpHexHea_nominal*(mDom_flow_nominal/mHex_flow_nominal)^2 | Pressure drop across the heat exchanger at nominal conditions on domestic hot water side |
| Modelica.Units.SI.MassFlowRate | mHex_flow_nominal | QHex_flow_nominal/dTHexHea_nominal/4200 | Mass flow rate of heat exchanger on heating side |
| Modelica.Units.SI.TemperatureDifference | dTHexHea_nominal | 5 | Temperature difference across heat exchanger on heating water side (inlet-outlet) |
| Modelica.Units.SI.TemperatureDifference | dTHexApp_nominal | 2 | Heat exchanger approach temperature |
| Heat exchanger | |||
| Modelica.Units.SI.MassFlowRate | mDom_flow_nominal | Design mass flow rate of domestic hot water | |
| Modelica.Units.SI.HeatFlowRate | QHex_flow_nominal | mDom_flow_nominal*4200*(TDom_nominal - TCol_nominal) | Nominal heating flow rate at heat exchanger |
| Domestic hot water | |||
| Modelica.Units.SI.Temperature | TDom_nominal | 318.15 | Temperature of domestic hot water leaving heater at nominal conditions |
| Advanced › Domestic hot water | |||
| Modelica.Units.SI.Temperature | TCol_nominal | 288.15 | Temperature of cold water at nominal conditions |
Revisions
-
September 11, 2023 by David Blum:
Updated for release. -
November 22, 2022 by Dre Helmns:
Initial implementation.