Question: a refrigeration system operating on r134a operates with an evaporating...
A refrigeration system operating on R134a operates with an evaporating temperature of -5°C and a condensing temperature of 45°C. The pressure drop through the evaporator is 38kpa, through the liquid line from the receiver to the evaporator 120 kpa, through the suction line and suction valve 57 kpa. in addition, There is a suction line superheat of 8k with sub-cooling in the condenser of 5k. when operating with heat load of 25k.
2.1 calculate mass flow rate of refrigerant
2.2 the volume flow rates of compressor inlet
2.3 heat of compression
2.4 Theoretical compression
2.5 coefficient of performance
2.6 total heat rejection in the condenser
NB: With regards to the above question can you kindly explain in details on how you get all the h1,h2,h3 and h4 values.... it would be lovely if you can show me in a steam table or steam chart because i get lost Thankx