Analysis on heat transfer between neighborhoods in high-rise buildings considering stack effect pressure and wind pressure

Xiang Jingyan, Wang Peibin, Yin Nana and Li Yanjun

2017.09.28

In view of the fact that the stack effect pressure and wind pressure in high-rise buildings are more significant, it is necessary to analyse the heat transfer between neighborhoods. Taking a 12-storey residential building in Shenyang city as the research object, calculates the heat transfer temperature difference and the heat transfer ratio between neighborhoods under the steady design condition with non-heating households at different locations in the building. The calculated results differ with the location change of heating and non-heating households in the building. The heat transfer temperature difference between neighborhoods is 2.8 to 11.4 ℃, the relative heat gain of non-heating households is 69% to 92%, and the relative heat loss of heating households is 4% to 96%. Stack effect pressure and wind pressure make the results different vertically in the building, with the vertical difference between the heat transfer temperature up to 21%, while the vertical difference between the heat transfer ratio within 10%. When the building changes to a 32-storey one, the temperature difference differs vertically up to 34%, but the heat transfer ratio differs vertically still within 10%.