A 3-ton (600-Btu/min) vapor-compression refrigeration cycle uses R-134a to maintain a freezing compartment at 0 F. The
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A 3-ton (600-Btu/min) vapor-compression refrigeration cycle uses R-134a to maintain a freezing compartment at 0 F. The room air is at 70 F. The R-134a condenses at 80 F and evaporates at –10 F. It enters the compressor with 10 F of superheat. The compressor efficiency is 0.85. It leaves the condenser with 10 F of subcooling.
A. Perform a complete thermal analysis of the cycle.
B. Determine the horsepower required per ton of refrigeration (hp/ton). That is, determine Ẇ/Q̇e, where W is the power supplied to the compressor (hp) and Q̇e is the heat-transfer rate to the evaporator (tons).
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A Complete Thermal Analysis of the Cycle We can use the following thermodynamic processes to analyze the refrigeration cycle Isentropic compression Co...View the full answer
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Related Book For 
Thermodynamics Concepts And Applications
ISBN: 9781107179714
2nd Edition
Authors: Stephen R. Turns, Laura L. Pauley
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