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The relation between the energy efficiency ratio (EER) of an air conditioner and the coefficient of performance (COP) of its refrigeration cycle is discussed. Two other efficiency…
B. Lindsey, P. Heron, and P. Shaffer, Am. J. Phys., 77 (11), 999-1009 (2009).
The authors discuss students' ability to apply the concepts of work and energy to situations in which the internal structure of a system cannot be ignored, that is, the system cannot…