ME300Lecture36

ME300Lecture36 - Lecture 36: Vapor Compression Cycles -...

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36.1 Lecture 36: Vapor Compression Cycles - Ideal vapor-compression refrigeration cycle
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36.2 Condenser Evaporator Compressor Expansion device Vapor Compression Cycle Evaporating temperature ~10°C lower than evaporator environment Condensing temperature ~10°C higher than condenser environment Environmental temp. in cooling mode Above environm. temp. in heating mode Sub-environmental temp. in cooling mode Environmental temp. in heating mode Continue Vapor Compression Cycles
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36.3 Continue Vapor Compression Cycles Compressor Throttling Valve T s 2 1 3 4 Condenser 1 2 3 4 Evaporator W Q cond Q evap T cond T evap T H T L subcooling T sc superheat: T sh
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36.4 Continue Vapor Compression Cycles Typical Assumptions » specified evaporating (T evap ) and condensing (T cond ) temperatures » specified superheat entering the compressor » specified subcooling leaving the condenser » constant pressure throughout heat exchangers » negligible kinetic and potential energy changes for all
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ME300Lecture36 - Lecture 36: Vapor Compression Cycles -...

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