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An ammonia refrigeration system has a COP of 3.5 and a cooling power of 15 kW....

An ammonia refrigeration system has a COP of 3.5 and a cooling power of 15 kW. The system’s heat rejection to the environment at 20℃ is solely through the condenser, where superheated ammonia vapor at 75℃, 1.2 MPa is isobarically cooled to 25℃. Determine the mass flow rate of ammonia, the entropy generation rate for the process, and the work loss.

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