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In _______________ process, the fresh air is forced in the room and the vitiated air is allowed to leave the room by itself or is extracted by outlet fans.

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In _______________ process, the fresh air is forced in the room and the vitiated air is allowed to leave the room by itself or is extracted by outlet fans.

(a) Plenum

(b) Air conditioning

(c) Exhaust

(d) Supply

This question was posed to me by my college professor while I was bunking the class.

The query is from Variations in Ventilation System with Climate in division Acoustics and Ventilation of Construction & Building Materials

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Best answer
Correct answer is (a) Plenum

Best explanation: The Plenum process may be employed for downward ventilation or upward ventilation. In the former case, the incoming air is allowed to enter at the ceiling height and while mixing with the vitiated air during its download journey, it is taken out through outlets situated at floor level.

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