4. A supermarket refrigeration system uses Ammonia as the refrigerant. It has an evaporation temperature of 30C. If it is an Ideal Refrigeration cycle with 2 kg/s of mass flow for the ammonia, and it provides 2215.3 kW of cooling, how much work must be added to the compressor? Answer: about 630 kW Hint: consider solving the cycle clockwise: i.e. going from point I to point 4, etc.. You’ll need to do some interpolating at the ena
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