5.1.1 Heat is transferred to a heat engine FURNACE from a furnace at a rate of 80 MW. If the rate On= 80 MW of waste heat rejection to a nearby river is 50 MW, determine the net power output and the netout thermal efficiency for this heat engine. OL = 50 MW Kitchen RIVER 5.1.2 The food compartment of a refrigerator is maintained at 4C by removing heat from it at a rate of 360 kJ/min. If the required power input to the refrigerator is 2 kW, determine (a) the coefficient of performance of the refrigerator; (b) the rate of heat rejection to the room that houses the refrigerator. Wetin = 2 kW g = 360 kJ/min Food compartment 4C 21