Problem 5: A heat pump heats a house in the winter and then reverses to cool it down in the summer. To keep the comfort level, the interior temperature should be 200C in the winter and 250C in the summer. Heat transfer through the walls and ceilings is estimated to be 600 W per degree temperature difference between the inside and the outside. а. If the outside winter temperature is OoC, what is the minimum power required to drive the heat pump. b. For the same power as in part (a), what is the maximum outside summer temperature for which the house can be maintained at the comfort level.

Problem 5: A heat pump heats a house in the winter and then reverses to cool it down in the summer. To keep the comfort level, the interior temperature should be 200C in the winter and 250C in the summer. Heat transfer through the walls and ceilings is estimated to be 600 W per degree temperature difference between the inside and the outside. а. If the outside winter temperature is OoC, what is the minimum power required to drive the heat pump. b. For the same power as in part (a), what is the maximum outside summer temperature for which the house can be maintained at the comfort level.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter48: Cooling Towers And Pumps

Section: Chapter Questions

Problem 13RQ

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