Question: a r12 vapour compression refrigeration system has a condensing temperature...

A R-12 vapour compression refrigeration system has a condensing temperature of 50o C. The refrigeration capacity is 7 tons. The liquid leaving the condenser is saturated liquid and compression is isentropic. Enthalpy (KJ/Kg) Temperature Liquid Vapour 50 84.868 206.298 0 36.022 187.397 Determine 1) Refrigerant flow rate ? 2) Power required to run the compressor ? 3) COP of the system

Temperature 50 degree. Liquid line 84.868 (KJ/KG) Vapour 206.298 (KJ/kg)

Temperature 0 degree. Liquid line 36.022 (KJ/KG) Vapour 187.397 (KJ/kg)