The cooling load of a building is estimated at 60 000 Btu/hr, of which 25% is latent heat. The space is to be maintained at 75 F db and 50 % relative humidity. The outdoor air is at 110 F db and 40% relative humidity. The air is supplied to the space at 55 F.If the sensible heat factor of the cooling equipment is SHF-0.6 and by using the psychrometric chart

The cooling load of a building is estimated at 60 000 Btu/hr, of which 25% is latent heat. The space is to be maintained at 75 F db and 50 % relative humidity. The outdoor air is at 110 F db and 40% relative humidity. The air is supplied to the space at 55 F.If the sensible heat factor of the cooling equipment is SHF-0.6 and by using the psychrometric chart

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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A cooling tower of a centralized air conditioning system handles 5,000 m³/h of water which enters the tower at 40°C. The cooled water leaves the tower at 28°C. The drift loss is 0.1% while the blowdown is 0.4%. The water make-up is 150 m³/h at 30°C. The air blown through the tower enters at 25°C and has a relative humidity of 70%. The air leaves the tower at 35°C with a relative humidity of 95%. Calculate the volume of air, in m³/h at ambient conditions that the forced draft fan of the cooling tower handles.
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Which is better for humidifying air, adding steam or water? Justify?
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Thermodynamics
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