A gasoline engine operates on an Otto cycle and is running at 2000 RPM. At that speed, it has an inlet air mass flowrate of 0.085 kg/s at a pressure of 85 kPa and a temperature of 280 K. After combustion the temperature is 2000 K and the highest cycle pressure is 5 MPa. Find the compression ratio, the cycle efficiency, and the heat added during combustion.

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