A refrigerator operates on the ideal vaporcompression refrigeration cycle and uses refrigerant-1

Name: A refrigerator operates on the ideal vaporcompression refrigeration cycle and uses refrigerant-134a as the working fluid. The condenser operates at 300 psia and the evaporator at 20^∘F. If an adiabatic, reversible expansion device were available and used to expand the liquid leaving the condenser, how much would the COP improve by using this device instead of the throttle device?
Uploaded: 2022-06-23T10:08:20-08:00
Duration: 2 min 2 s
Channel: Adriano Chikande
Description: A refrigerator operates on the ideal vaporcompression refrigeration cycle and uses refrigerant-134a as the working fluid. The condenser operates at 300 psia and the evaporator at 20^∘F. If an adiabatic, reversible expansion device were available and used to expand the liquid leaving the condenser, how much would the COP improve by using this device instead of the throttle device?

Question

Adriano Chikande · Accepted Answer

Step 1: Calculate the COP with the throttle device:
Given:
h1 = 146 Btu/lbm
h2 = 125.7 Btu/lbm
h

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