A refrigeration system of 15 tons capacity operates on simple vapour compression system cycle using R – 22. The evaporator temperature is 5°C and condenser temperature is 50°C. Calculate

(a) the refrigerent mass flow rate and

(b) the compressor intake volume flow rate if the compressor volumetric efficiency is 0.72. The refrigerant properties data is given in the following table :

Transcribed Image Text:

Tempera- Pressure Enthalpy kJ/kg ture Co bar nf 11% v, U/kg Volume vg m Ung 5 5.836 205.9 407.1 0.791 0.0404 50 19.423 263.3 417.7 0.922 0.0117