ME300Lecture37

# ME300Lecture37 - 37.4 Continue Example 37.1 Compressor...

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37.1 Lecture 37: Heat Pump T L T H Q L Q H W in Saturated Liquid Throttling Valve Evaporator High Pressure Vapor Condenser Basic heat pump

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37.2 Lecture 31: Heat Pump A heat pump can be used to heat a house in winter and to cool it in summer .
37.3 Example 37.1 Given: Outside temperature -22 o C, inside temperature 20 o C, temperature difference T HX = 10 o C, heat transfer rate 10 kW to a house, refrigerant is R-134a, saturated vapor at compressor inlet and saturated liquid at the throttling valve inlet, compressor efficiency 0.85 Find: (a) mass flow rate of refrigerant, (b) compressor power, (c) exergy destroyed, (d) COP

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Unformatted text preview: 37.4 Continue Example 37.1 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 Assumptions: 37.5 Continue Example 37.1 Solution: Start by filling in a table of state point properties State p bar T o C x h kJ/kg s kJ/kgK 1 2 3 4 37.6 Continue Example 37.1 37.7 Continue Example 37.1 37.8 Continue Example 37.1 37.9 Continue Example 37.1 37.10 Continue Example 37.1 37.11 Continue Example 37.1 37.12 Continue Example 37.1...
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## This document was uploaded on 04/23/2011.

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ME300Lecture37 - 37.4 Continue Example 37.1 Compressor...

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