A single-storey 20 m wide × 20 m long× 3 m tall office building is used by 20 occupants. Each occupant generates 100 grams of water vapour per hour. The variable air volume terminal unit serving this office supplies 14 L/s of air at 17°C and 50% RH. Assume that the outdoor temperature and the relative humidity are -10°C and 80%, respectively. Under these conditions, the indoor air temperature and relative humidity remain constant at 22°C and 40% RH. Assume that the density of air is 1.2 kg/m3. Estimate the infiltration rate in air changes per hour. Pindoors=1053Pa rindoors=0.00653 kgw/kga Pout=227Pa rout=0.00140 kgw/kga Poffice=965Pa roffice=0.00598 kgw/kga V=1200m^3 A=400m^2
A single-storey 20 m wide × 20 m long× 3 m tall office building is used by 20 occupants. Each occupant generates 100 grams of water vapour per hour. The variable air volume terminal unit serving this office supplies 14 L/s of air at 17°C and 50% RH. Assume that the outdoor temperature and the relative humidity are -10°C and 80%, respectively. Under these conditions, the indoor air temperature and relative humidity remain constant at 22°C and 40% RH. Assume that the density of air is 1.2 kg/m3. Estimate the infiltration rate in air changes per hour. Pindoors=1053Pa rindoors=0.00653 kgw/kga Pout=227Pa rout=0.00140 kgw/kga Poffice=965Pa roffice=0.00598 kgw/kga V=1200m^3 A=400m^2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A single-storey 20 m wide × 20 m long× 3 m tall office building is used by 20 occupants. Each occupant generates 100 grams of water vapour per hour. The variable air volume terminal unit serving this office supplies 14 L/s of air at 17°C and 50% RH. Assume that the outdoor temperature and the relative humidity are -10°C and 80%, respectively. Under these conditions, the indoor air temperature and relative humidity remain constant at 22°C and 40% RH. Assume that the density of air is 1.2 kg/m3. Estimate the infiltration rate in air changes per hour.
Pindoors=1053Pa
rindoors=0.00653 kgw/kga
Pout=227Pa
rout=0.00140 kgw/kga
Poffice=965Pa
roffice=0.00598 kgw/kga
V=1200m^3
A=400m^2
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