The refrigerant fluid R-123 (see Table A.2) is used in a refrigeration system that operates in the ideal refrigeration cycle, except that the compressor is neither reversible nor adiabatic. Saturated vapor at −26.5◦C enters the compressor, and superheated vapor exits at 65◦C. Heat is rejected from the compressor as 1kW, and the R-123 flowrate is 0.1 kg/s. Saturated liquid exits the condenser at 37.5◦C. Specific heat for R-123 is Cp₀ = 0.6 kJ/kg K. Find the COP.