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Question: instead of humidifying and humidifier they will be dehumidifying and...

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Instead of humidifying and humidifier they will be dehumidifying and dehumidifier as follows (3rd line from the bottom and last line)-

3. The following data refer to air conditioning of a public hall:

Outdoor conditions = 40ºC DBT, 25ºC WBT

Required comfort conditions = 24ºC DBT, 50% RH

Seating capacity of hall = 500

Amount of outdoor air supplied = 0.3 m3/min/person

If the required condition is achieved first by adiabatic dehumidifying and then cooling, find:

a) The capacity of the cooling coil and surface temperature of the coil if the by-pass factor is 0.4; and

b) The capacity of the dehumidifier and its efficiency.

3. The following data refer to air conditioning of a public hall Outdoor conditions 40°C DBT, 25°C WBT Required comfort conditions = 24°C DBT, 50% RH Seating capacity of hall 500 Amount of outdoor air supplied 0.3 m/min/person If the required condition is achieved first by adiabatic humidifying and then cooling, find: the coil if the by-pass factor is 0.4; and b) The capacity of the humidifier and its efficiency. (10 marks)
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