A space to be air-conditioned has a sensible heat load of 34.9 hp and a latent heat load of 6.97 hp. The space is to maintained at 24°C DB and 17°C WB. Outside air is at 32°C DB and 24°C WB temperatures. With a re-heater to satisfy the space conditions, the conditioned air will enter the space at 18°C. If 40% of the supply air, is fresh air and the rest is re-circulated, find the specific humidity of outside air in kgv/kgda. The mass flow rate of supply air, ms is 312 kg/min. Take the mass flow rate of supply air, (ms = the sum of air mass flow rate to dissipate the sensible heat, msh, and the air mass flow rate to dissipate the latent heat, mlh). Take cp of dry air = unity.

A space to be air-conditioned has a sensible heat load of 34.9 hp and a latent heat load of 6.97 hp. The space is to maintained at 24°C DB and 17°C WB. Outside air is at 32°C DB and 24°C WB temperatures. With a re-heater to satisfy the space conditions, the conditioned air will enter the space at 18°C. If 40% of the supply air, is fresh air and the rest is re-circulated, find the specific humidity of outside air in kgv/kgda. The mass flow rate of supply air, ms is 312 kg/min. Take the mass flow rate of supply air, (ms = the sum of air mass flow rate to dissipate the sensible heat, msh, and the air mass flow rate to dissipate the latent heat, mlh). Take cp of dry air = unity.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.46P

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