【Joint Study*】【HVAC Version 20151230】
Thread Content
This post was last edited by hjztbwg on 2016-1-7 09:29. The height of a certain industrial building is 15 m; the total heat loss required for heating the building in winter, as calculated, is 1500 kW. The heat transfer coefficient of the exterior windows is 3.5 W/(㎡·K). What should be the heat loss due to cold air infiltration? Answer: B (A) 375kw (B) 450kw (C) 525kw (D) 600kw
A certain industrial building is 15 m in height. The calculated total heat loss of the building’s envelope during winter heating is 1500 kW. The heat transfer coefficient of the exterior windows is 3.5 W/(㎡·K). What should be the heat loss due to cold air infiltration? A (A)375kw (B)450kw (C)525kw (D)600kw
A certain industrial building is 15 m in height. The calculated total heat loss of the building’s envelope during winter heating is 1500 kW. The heat transfer coefficient of the exterior windows is 3.5 W/(㎡·K). What should be the heat loss due to cold air infiltration? (B)450kw
A certain industrial building is 15 m in height. The calculated total heat loss of the building’s envelope during winter heating is 1500 kW. The heat transfer coefficient of the exterior windows is 3.5 W/(㎡·K). What should be the heat loss due to cold air infiltration? (B) (A)375kw (B)450kw (C)525kw (D)600kw
Answer: B. Analysis: According to D.0.4 of the Thermal Code, the heat loss due to cold air entering indoor spaces through gaps in doors and windows in industrial buildings can be estimated using Table D.0.4. The heat transfer coefficient of the exterior window is 3.5 W/(m2·K). According to clause 2.2.6 of the \"Technical Measures,\" this is a double-glazed window; therefore, cold air infiltration accounts for 30% of the total heat loss, resulting in a cold air infiltration amount of 1500*0.3=450 Kw
B, double-glazed window 1500*0.3=450KW