Prediction of Chiller Power Consumption: An Entropy Generation Approach

摘要

Irreversibilities in each component of vapor compression chillers contribute to additional powerudconsumption in chillers. In this study, chiller power consumption was predicted by computing theudCarnot reversible work and entropy generated in every component of the chiller.udThermodynamic properties namely enthalpy and entropy of the entire refrigerant cycle wereudobtained by measuring the pressure and temperature at the inlet and outlet of each primaryudcomponent of a 15kW R22 water cooled scroll chiller. Entropy generation of each componentudwas then calculated using the First and Second Laws of Thermodynamics. Good correlation wasudfound between the measured and computed chiller power consumption. This irreversibilityudanalysis can be also effectively used as a performance monitoring tool in vapor compressionudchillers as higher entropy generation is anticipated during faulty operations.