To maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must be provi 1200 Btu/min. Determine the electrical power required, in kW, to deliver the heating using. (a) electrical-resistance heating. (b) a heat pump whose coefficient of performance is 2.5, (c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.

To maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must be provi 1200 Btu/min. Determine the electrical power required, in kW, to deliver the heating using. (a) electrical-resistance heating. (b) a heat pump whose coefficient of performance is 2.5, (c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

To maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must be provided at an average rate of
1200 Btu/min.
Determine the electrical power required, in kW, to deliver the heating using:
(a) electrical-resistance heating,
(b) a heat pump whose coefficient of performance is 2.5,
(c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.

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To maintain a dwelling steadily at 68°F on a day when the outside temperature is 40°F, heating must be provided at an average rate of 300 Btu/min. Determine the electrical power required, in kW, to deliver the heating using: (a) electrical-resistance heating. (b) a heat pump whose coefficient of performance is 2.5, (c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.