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Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.BaseClasses

Package with base classes for dry cooling tower data records

Information

This package contains base classes that are used to construct the data records in Buildings.Fluid.HeatExchangers.CoolingTowers.Data.Merkel.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

Name Description
Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.BaseClasses.UACorrection UACorrection UA correction factors for Merkel cooling towers

Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.BaseClasses.UACorrection Buildings.Fluid.HeatExchangers.CoolingTowers.Data.DryCooler.BaseClasses.UACorrection

UA correction factors for Merkel cooling towers

Information

This data record specifies parameters for the flow and temperature correction of the convective heat transfer coefficients used in the model Buildings.Fluid.HeatExchangers.CoolingTowers.DryCooler.

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

Contents

TypeNameDefaultDescription
Realn_w0.85Water-side exponent for convective heat transfer coefficient, h~m_flow^n
Realn_a0.8Air-side exponent for convective heat transfer coefficient, h~m_flow^n
Nominal condition
Realr_nominal0.5Ratio between air-side and water-side convective heat transfer coefficient
Advanced
Modeling detail
BooleanwaterSideFlowDependenttrueSet to false to make water-side hA independent of mass flow rate
BooleanairSideFlowDependenttrueSet to false to make air-side hA independent of mass flow rate
BooleanwaterSideTemperatureDependenttrueSet to false to make water-side hA independent of temperature
BooleanairSideTemperatureDependenttrueSet to false to make air-side hA independent of temperature

Modelica definition

record UACorrection "UA correction factors for Merkel cooling towers" extends Modelica.Icons.Record; parameter Real r_nominal(min=0)=0.5 "Ratio between air-side and water-side convective heat transfer coefficient"; parameter Real n_w(min=0, max=1)=0.85 "Water-side exponent for convective heat transfer coefficient, h~m_flow^n"; parameter Real n_a(min=0, max=1)=0.8 "Air-side exponent for convective heat transfer coefficient, h~m_flow^n"; parameter Boolean waterSideFlowDependent=true "Set to false to make water-side hA independent of mass flow rate"; parameter Boolean airSideFlowDependent = true "Set to false to make air-side hA independent of mass flow rate"; parameter Boolean waterSideTemperatureDependent = true "Set to false to make water-side hA independent of temperature"; parameter Boolean airSideTemperatureDependent = true "Set to false to make air-side hA independent of temperature"; end UACorrection;