考虑热压和风压作用的高层建筑户间传热分析

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

高层建筑中热压和风压作用更加显著,有必要对高层建筑户间传热进行分析。以沈阳市某12层居住建筑为研究对象,针对未供暖住户处于建筑中不同位置的情况,计算了稳态设计工况下的户间传热温差和户间传热比例。计算结果随供暖与未供暖住户相对位置不同而有较大差异,户间传热温差为2.8~11.4℃,未供暖住户得热比例为69%~92%,供暖住户失热比例为4%~96%;热压和风压作用导致计算结果沿建筑竖向存在差别,户间传热温差的竖向差别可达21%,而户间传热比例的竖向差别在10%以内;建筑层数增加到32层时,户间传热温差的竖向差别可达34%,但户间传热比例的竖向差别仍在10%以内。

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 ~C, 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%.