As a building services engineer, you are given a task by the management to design a new mechanical ventilation system for a new seminar room. The seminar room is designated for 60 occupants and has a dimension of 18 m x 8 m x 3.5 m. About 4 L/s of fresh air and 10 L/s of re-circulated air are supplied to the room for each person by a single-duct ventilation system. 10% of the supply volume is expected to leak out of the room. You are required to: (i) determine the room's air change rate per hour (ACH). (ii) design the suitable dimensions of the supply supply duct at velocity of 3 m/s. Given the air enter from the

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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As a building services engineer, you are given a task by the management to design a
new mechanical ventilation system for a new seminar room. The seminar room is
designated for 60 occupants and has a dimension of 18 m x 8 m x 3.5 m. About 4 L/s
of fresh air and 10 L/s of re-circulated air are supplied to the room for each person by
a single-duct ventilation system. 10% of the supply volume is expected to leak out of
the room. You are required to:
(i) determine the room's air change rate per hour (ACH).
(ii) design the suitable dimensions of the supply duct. Given the air enter from the
supply duct at velocity of 3 m/s.
Transcribed Image Text:Q3 As a building services engineer, you are given a task by the management to design a new mechanical ventilation system for a new seminar room. The seminar room is designated for 60 occupants and has a dimension of 18 m x 8 m x 3.5 m. About 4 L/s of fresh air and 10 L/s of re-circulated air are supplied to the room for each person by a single-duct ventilation system. 10% of the supply volume is expected to leak out of the room. You are required to: (i) determine the room's air change rate per hour (ACH). (ii) design the suitable dimensions of the supply duct. Given the air enter from the supply duct at velocity of 3 m/s.
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