A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at
ID: 2264698 • Letter: A
Question
A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump? 2.5 2.8 1.0 1.5 A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump? 2.5 2.8 1.0 1.5 A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump? 2.5 2.8 1.0 1.5 A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump? 2.5 2.8 1.0 1.5 A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump? 2.5 2.8 1.0 1.5Explanation / Answer
COP can be expressed as
COP = hh / hw
COP = 300/200 = 1.5
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