3. A 10 m wide * 10 m long x 3 m tall building operates at an average of 4 Pa pressure difference between indoors and ou

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3 A 10 M Wide 10 M Long X 3 M Tall Building Operates At An Average Of 4 Pa Pressure Difference Between Indoors And Ou 1 (64.95 KiB) Viewed 57 times

3. A 10 m wide * 10 m long x 3 m tall building operates at an average of 4 Pa pressure difference between indoors and outdoors. Assume that the outdoor temperature and the relative humidity are constant at 10°C and 80%, and the indoor temperature and the relative humidity are constant at 22°C and 30%, respectively. Assume that the density of air is 1.2 kg/m3. Airtightness of the building was tested through a standard fan pressurization test. The test results indicate a flow coefficient c of 75 and a flow exponent n of 0.5, where q(L/s) = CAP. (1) Compute the infiltration rate in terms of air changes per hour and air permeance (L/s· m2) at 4 Pa. (ü) Compute the sensible and latent heat loss rates in kW due to infiltration. (iii) Compute the humidification rate (g/s) required to maintain the indoor humidity levels.