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In: Mechanical Engineering

The air in a building is to be maintained at 25°C dry bulb temperature and 60%...

The air in a building is to be maintained at 25°C dry bulb temperature and 60% relative humidity when the outside conditions are 35°C, 50% saturation with a barometric pressure of 101.3 kPa. The total heat gains to the room are 15 kW sensible heat and 3 kW latent heat. There is no recirculation and the fresh air passes over a cooling coil to dehumidify it, and then a heater before entering the room. The cooling coil by pass factor is 0.18; the volume flow of fresh air is 5m3/s. Calculate (a) the temperature of the air leaving the cooling coil; (b) the refrigeration load for the coil in kW; (c) the heat supplied in the heater in kW.

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samet mamat answered 7 months ago
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