Question

Asked Oct 23, 2019

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The minimum fresh air requirement of a residential building is specified to be 0.35 air change per hour (per ASHRAE standards). That is, 35% of the entire quantity of air contained in a residence should be replaced by fresh outdoor air every hour. The ventilation requirement of a 3-meter high

residence with 150 square meters of floor space is to be met by air provided by a single fan.

a. Determine the required flow capacity of the fan (in m3

/min).

b. Find the diameter of the fan duct required (circular cross-section) if the average air velocity from the duct is to be 3 m/sec.

Step 1

Calculate the volume o...

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