Water vapor initially at 3.0 MPa and 300 C is contained within a piston-cylinder assembly. The water is cooled at constant volume until its temperature is 200 C. The water is then condensed isothermally to saturated liquid. For the water as the system, evaluate the work, in kJ/kg.

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain