A room measures 4mx7mx5m and the air in it has to be always kept 20 C0 lower than that of the incoming air. The air inside has to be renewed every 30 minutes. Assuming 75% efficiency, calculate the HP rating of an air-conditioning unit suitable for this purpose. Take specific heat of air as 0.24 and its density as 1.27 kg/m^3

A room measures 4mx7mx5m and the air in it has to be always kept 20 C0 lower than that of the incoming air. The air inside has to be renewed every 30 minutes. Assuming 75% efficiency, calculate the HP rating of an air-conditioning unit suitable for this purpose. Take specific heat of air as 0.24 and its density as 1.27 kg/m^3

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

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 27RQ: How many Btu/h would be produced in a 12-kW electricheater?

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A room measures 4mx7mx5m and the air in it has to be always kept 20 C lower than that of the incoming air. The air inside has to be renewed every 30 minutes. Assuming 75% efficiency, calculate the HP rating of an air-conditioning unit suitable for this purpose. Take specific heat of air as 0.24 and its density as 1.27 kg/m3.
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