An office for seating 30 occupants is to be maintained at 22°C DB and 55% RH. The outdoor conditions are 36°C DB and 27°C WB. The various loads in the office are: Solar heat gain = 8,500W; Sensible heat gain per occupants = 83 W; Latent heat gain per occupant = 100W; Lighting load = 2,500W; Sensible heat load from other sources = 12,000W; and Infiltration load = 15 m3/min. Assuming 40% fresh air and 60% of recirculated air passing through the evaporator coil and the by-pass factor of 0.12, determine the following:

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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Determine the following:

1.The Capacity of the Airconditioning Plant, in Tons of Refrigeration

2.  The Dew Point Temperature of the coil, in degrees Centigrade. 

 

An office for seating 30 occupants is to be maintained at 22°C DB and 55% RH. The outdoor conditions
are 36°C DB and 27°C WB. The various loads in the office are: Solar heat gain = 8,500W; Sensible heat
gain per occupants = 83 W; Latent heat gain per occupant = 100W; Lighting load = 2,500W; Sensible heat
load from other sources = 12,000W; and Infiltration load = 15 m3/min. Assuming 40% fresh air and 60% of
recirculated air passing through the evaporator coil and the by-pass factor of 0.12, determine the
following:
Transcribed Image Text:An office for seating 30 occupants is to be maintained at 22°C DB and 55% RH. The outdoor conditions are 36°C DB and 27°C WB. The various loads in the office are: Solar heat gain = 8,500W; Sensible heat gain per occupants = 83 W; Latent heat gain per occupant = 100W; Lighting load = 2,500W; Sensible heat load from other sources = 12,000W; and Infiltration load = 15 m3/min. Assuming 40% fresh air and 60% of recirculated air passing through the evaporator coil and the by-pass factor of 0.12, determine the following:
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