Problem 3 - Air Conditioning ( An office building has a window air conditioner with a COP of 2 that consumes 2 kW of electricity. Computers, terminals, printers and other equipment are in the room with a total rate power of 8.4 kW. At any given time, 40% of the equipment is assumed to be operating. There are seven employees working in the building at any given time and each is assumed to generate heat at a rate of 100 W. The office building also gains heat due to direct solar heating at a rate of 3 kW during the middle of the day Is the window air conditioner large enough to meet the cooling load? If not, how many portable air conditioners that can remove heat at a rate of 7,000 Btu/h would be required to meet the cooling load? Be sure to draw a schematic, draw a control boundary and apply the first law to solve this problem. Do not consider the electricity consumed by the window air conditioner or other air conditioners when computing the load. Note that the cooling load is the total amount of heat an air conditioner must remove from a space.

Problem 3 - Air Conditioning ( An office building has a window air conditioner with a COP of 2 that consumes 2 kW of electricity. Computers, terminals, printers and other equipment are in the room with a total rate power of 8.4 kW. At any given time, 40% of the equipment is assumed to be operating. There are seven employees working in the building at any given time and each is assumed to generate heat at a rate of 100 W. The office building also gains heat due to direct solar heating at a rate of 3 kW during the middle of the day Is the window air conditioner large enough to meet the cooling load? If not, how many portable air conditioners that can remove heat at a rate of 7,000 Btu/h would be required to meet the cooling load? Be sure to draw a schematic, draw a control boundary and apply the first law to solve this problem. Do not consider the electricity consumed by the window air conditioner or other air conditioners when computing the load. Note that the cooling load is the total amount of heat an air conditioner must remove from a space.

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

Chapter44: Geothermal Heat Pumps

Section: Chapter Questions

Problem 13RQ: If 14 gpm of water is flowing through an open-loop heat pump with a temperature difference of 7F,...

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