A heating system must maintain the interior of a building at 20°C during a period when the outside air temperature is 5°C and the heat transfer from the building through its roof and walls is 3 x 106 kJ. For this duty heat pumps are under consideration that would operate between the dwelling and a. the ground at 15°C. • b. a pond at 10°C. . c. the outside air at 5°C. For each case, evaluate the minimum theoretical net work input required by any such heat pump, in kj Answer: a. (Wcycle)min = a. (W cycle)min | a. (W cycle)min = kj kj kj

A heating system must maintain the interior of a building at 20°C during a period when the outside air temperature is 5°C and the heat transfer from the building through its roof and walls is 3 x 106 kJ. For this duty heat pumps are under consideration that would operate between the dwelling and a. the ground at 15°C. • b. a pond at 10°C. . c. the outside air at 5°C. For each case, evaluate the minimum theoretical net work input required by any such heat pump, in kj Answer: a. (Wcycle)min = a. (W cycle)min | a. (W cycle)min = kj kj kj

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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