A vapour compression refrigeration machine with r-12 as refrigerant has a capacity of 20 tonnes of refrigeration operating between -28c and 26 c. The refrigerant is subcooled by 4c before the throttle valve and superheated by 5c before leaving the evaporator. A machine has a 6- cylinder, single acting, compressors with l/d =1.25. Calculate (i) theoretical power required (ii) cop bore and stroke of cylinder, if volumetric efficiency is 87% and speed of compressor is 1000 rpm.
Answers
Answered by
0
Answer:
A vapour compression refrigeration machine with r-12 as refrigerant has a capacity of 20 tonnes of refrigeration operating between -28c and 26 c. The refrigerant is subcooled by 4c before the throttle valve and superheated by 5c before leaving the evaporator. A machine has a 6- cylinder, single acting, compressors with l/d =1.25. Calculate (i) theoretical power required (ii) cop bore and stroke of cylinder, if volumetric efficiency is 87% and speed of compressor is 1000 rpm.
Similar questions