Question

ii) A refrigeration unit with 100-ton capacity operates in a vapour compression O refrigeration cycle between the temperature limits of 308 and 263 K. It uses R-12 G as a refrigerantC A heat exchanger is inducted in the circuit in between the condenser and the expander, The refrigerant vapour leaving the evaporator is superheated in the heat exchanger in the countercurrent flow with the liquid leaving the condenser, The saturated liquid leaving the condenser get sub-cooled, while the vapour from the evaporator exit is superheated to the extent that a discharge temperatuire of 333 K is obtained after isentropic compression of R-12vapour. 2 , Page No. : 1

determine 1) sub cooling achieved in the heat exchanger, 2) refrigerant flow rate, 3) cop of the plant

Answer 1

The Values of Cp of liquid and Cp of vapour are not given in the question, hence i could not calculate the enthalpies at various points, But the procedure to solve above question is this only, Thank you.

Sven plase don emp 2-12 h-ha) (h cop