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A refrigerator using R-12 as the working fluid keeps the refrigerated space at ?16? in an...

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Mechanical Engineering

A refrigerator using R-12 as the working fluid keeps therefrigerated space at ?16? in an environment at 27?. You are askedto upgrade this refrigerator by replacing R-12 with theozone-friendly R-134a. What changes in the pressure levels wouldyou suggest in the new system? How do you think the COP of the newsystem will compare to the COP of the old system?

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