Chapter 5 No.5 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 of300 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 3.5,(c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.Part ADetermine the electrical power required, in kW, to deliver the heating using electrical-resistance heating.HintPart BYour answer is correct.W₂Part C5.2752Your answer is correct.HintDetermine the electrical power required, in kW, to deliver the heating using a heat pump whose coefficient of performance is 3.5.1.5072kw* Your answer is incorrect.kWkWAttempts: 1 of 4 usedDetermine the electrical power required, in kW, to deliver the heating using a reversible heat pump operating between hot andcold reservoirs at 68°F and 40°F, respectively.W = 0.3599|+Attempts: 1 of 4 used

For the heat pump the COP is defined as the ratio of heat to the work input and this is the concept…

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 3.5, (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 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 3.5, (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

Chapter 5 No.5

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 3.5,
(c) a reversible heat pump operating between hot and cold reservoirs at 68°F and 40°F, respectively.
Part A
Determine the electrical power required, in kW, to deliver the heating using electrical-resistance heating.
Hint
Part B
Your answer is correct.
W₂
Part C
5.2752
Your answer is correct.
Hint
Determine the electrical power required, in kW, to deliver the heating using a heat pump whose coefficient of performance is 3.5.
1.5072
kw
* Your answer is incorrect.
kW
kW
Attempts: 1 of 4 used
Determine the electrical power required, in kW, to deliver the heating using a reversible heat pump operating between hot and
cold reservoirs at 68°F and 40°F, respectively.
W = 0.3599
|
+
Attempts: 1 of 4 used

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