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Buildings.Fluid.HeatExchangers.CoolingTowers.Data.YorkCalc

Performance data records for wet cooling towers using the York calculation method

Information

This package contains performance data records for wet cooling towers that use the York calculation method. The data records can be used with the model Buildings.Fluid.HeatExchangers.CoolingTowers.YorkCalc.

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

Package Content

Name Description
Buildings.Fluid.HeatExchangers.CoolingTowers.Data.YorkCalc.Generic Generic Performance data record for a wet cooling cooler using the York calculation method

Buildings.Fluid.HeatExchangers.CoolingTowers.Data.YorkCalc.Generic Buildings.Fluid.HeatExchangers.CoolingTowers.Data.YorkCalc.Generic

Performance data record for a wet cooling cooler using the York calculation method

Information

Performance data record for a wet cooling cooler using the York calculation methods.

The default settings are for a cooler with a design approach temperature (cooling out - air wet bulb in) of 3.89 K and a design range temperature (cooling in - cooling out) of 5.56 K. This corresponds to a nominal water inlet temperature of 35 °C and a nominal water outlet temperature of 29.44 °C.

Extends from Buildings.Fluid.HeatExchangers.CoolingTowers.Data.BaseClasses.BaseCoolingTower (Performance data record for dry and wet cooling towers).

Contents

TypeNameDefaultDescription
RealPFan_Q_flow_nominal-0.05Ratio of fan power to provided cooling at full load (negative as Q_flow_nominal<0) [1]
Nominal thermal performance
HeatFlowRateQ_flow_nominal Nominal heat flow rate (negative, as heat is removed from the fluid) [W]
TemperatureTCooIn_nominal308.15Nominal cooling loop inlet temperature [K]
TemperatureTCooOut_nominal302.59Nominal cooling loop outlet temperature [K]
TemperatureTAirInWB_nominal298.7Nominal outdoor (air inlet) wetbulb temperature [K]
Nominal condition
PressureDifferencedp_nominal Pressure difference at design mass flow rate [Pa]
Advanced
RealratCooAir_nominalBuildings.Fluid.HeatExchange...Coolant-to-air mass flow rate ratio at design condition, used to compute air flow rate for UA_value [1]
fanfanRelPow Fan relative power consumption as a function of control signal, fanRelPow=P(y)/P(y=1)
RealfraFreCon0.125Fraction of tower capacity in free convection regime [1]

Modelica definition

record Generic "Performance data record for a wet cooling cooler using the York calculation method" extends Buildings.Fluid.HeatExchangers.CoolingTowers.Data.BaseClasses.BaseCoolingTower( TCooIn_nominal = 308.15, TCooOut_nominal = 302.59, ratCooAir_nominal = Buildings.Fluid.HeatExchangers.CoolingTowers.BaseClasses.Functions.equivalentHeatCapacity( TIn=TAirInWB_nominal, TOut=TAirInWB_nominal+5) / Buildings.Utilities.Psychrometrics.Constants.cpWatLiq); parameter Modelica.Units.SI.Temperature TAirInWB_nominal=298.7 "Nominal outdoor (air inlet) wetbulb temperature"; end Generic;