Engineering, 31.03.2020 00:15 daniellealex

To maintain a dwelling steadily at 68°F on a day when the outside temperature is 32°F, heating must be provided at an average rate of 740 Btu/min. Compare the electrical power required, in kW, to deliver the heating using (a) electrical-resistance heating, (b) a heat pump whose coefficient of performance is 3.0, (c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 32°F,

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To maintain a dwelling steadily at 68°F on a day when the outside temperature is 32°F, heating must...