Question

Week 3- Handout- 19w BSC2200 310 Building Systems-Google Chrome Algonquin College of Applied Arts and Technology [CA] https://brightspace algonquincollege.com/d21/le/content/144622/fullscreen/252 1915/View Week 3 - Handout Problem 1: Net Power Production of a Heat Engine O 80 Mw Heat is transferred to a heat engine from a furnace at a rate of 80 MW. If the rate of waste heat rejection to a nearby river is 50 MW determine the net power output and the thermal efficiency for this heat engine. Riwer Problem 2: Heat Rejection by a Refrigerator The food compartment of a refrigerator, shown in the figure, is maintained at 4°C 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 and (b) the rate of heat rejection to the room that houses the refrigerator Problem 3: Heating a House by a Heat Pump A heat pump is used to meet the heating requirements of a house and maintain it at 20°C. On a day when the outdoor air temperature drops to 22°C, the house is estimated to lose heat at a rate of BD,000 kl/h. If the heat pump under these conditions has a COP of 2.5, determine (al the power consumed by the heat pump and (b) the c He 0,230

Answer 1