Refrigerant-134a is working fluid in an ideal compression refrigeration cycle. The refrigerant leaves the evaporator at -20 ⁰C and has a condenser pressure of 0.9 MPa. The mass flow rate is 3 kg/min. Compute the COPR, COPR, Carnot for the same Tmax and Tmin, and the tons of refrigeration. Use Refrigerant-134a Table.