A refrigerator using R-12 as the working fluid keeps the
Chapter 11, Problem 144P(choose chapter or problem)
Problem 144P
A refrigerator using R-12 as the working fluid keeps the refrigerated space at –15°C in an environment at 30°C. You are asked to redesign this refrigerator by replacing R-12 with the ozone-friendly R-134a. What changes in the pressure levels would you suggest in the new system? How do you think the COP of the new system will compare to the COP of the old system?
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