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Unformatted text preview: Two air conditioners are considered for the building. Air conditioner A has a seasonal average COP of 3.2 and costs %5,500 to purchase and install. Air conditioner B has a seasonal average COP of 5.0 and costs $7000 to purchase and install. All else being equal, determine which air conditioner is a better buy. #5 (6-78) You are an engineer in an electric generation station. You know that the flames in the boiler reach a temperature of 1200 K and that cooling water at 300 K is available from a nearby river. What is the maximum efficiency your plant will ever achieve? #6 (6-86) An inventor claimes to have developed a heat engine that receives 700 kJ of heat from a source at 500 K and produces 300 kJ of net work while rejecting the waste heat to a sink at 290 K. Is this a reasonable claim? Why?...
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- Summer '08