A saturated vapour-compression cycle developing 50 kW of refrigeration using refrigerant 22 operates with a condensing temperature of 35C and an evaporating temperature of -10C. Calculate (4.1) the refrigerating effect in kJ/kg, (4.2) the circulation rate of refrigerant in kJ/s, (4.3) the power required by the compressor in kW, (4.4) the coefficient of performance, (4.5) the volume flow rate measured at the compressor suction, (4.6) the power per kilowatt of refrigeration, and (4.7) the compressor discharge temperature.