Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls are 9 ft high and 1 ft thick. Two of the walls of the house are 50 ft long and the others are 35 ft long. The house is maintained at 70°F at all times while the temperature of the outdoors varies. On a certain day, the temperature of the inner surface of the walls is measured to be at 52°F while the average temperature of the outer surface is observed to remain at 45°F during the day for 10 h and at 35°F at night for 14 h. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 50 ft 35 ft 9 ft Determine the amount of heat lost from the house that day. The amount of heat lost from the house that day is 248000 Btu.

Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls are 9 ft high and 1 ft thick. Two of the walls of the house are 50 ft long and the others are 35 ft long. The house is maintained at 70°F at all times while the temperature of the outdoors varies. On a certain day, the temperature of the inner surface of the walls is measured to be at 52°F while the average temperature of the outer surface is observed to remain at 45°F during the day for 10 h and at 35°F at night for 14 h. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 50 ft 35 ft 9 ft Determine the amount of heat lost from the house that day. The amount of heat lost from the house that day is 248000 Btu.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.32P

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Required information Consider an electrically heated brick house (k = 0.40 Btu/h-ft-°F) whose walls are 9 ft high and 1 ft thick. Two of the walls of the house are 50 ft long and the others are 35 ft long. The house is maintained at 70°F at all times while the temperature of the outdoors varles. On a certain day, the temperature of the Inner surface of the walls is measured to be at 64°F while the average temperature of the outer surface is observed to remain at 45°F during the day for 10 h and at 35°F at night for 14 h. 35 ft 50 ft 9 ft Determine the amount of heat lost from the house that day. (You must provide an answer before moving on to the next part.) The amount of heat lost from the house that day is [ 18526 Btu.
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