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高层建筑中的地暖有热压和分压作用!

来源:/ 发布时间:2019/12/05

  高层建筑由于高度增加,热压作用不容忽视。冷风渗透量受到风压和热压的综合作用。下面就是高层建筑冷风透量在综合作用下常用的计算方法作以介绍。
  As the height of high-rise buildings increases, the effect of thermal pressure cannot be ignored. The infiltration of cold air is affected by wind pressure and heat pressure. The following is the common calculation method of the cold air permeability of high-rise buildings under the comprehensive action.
  一、热压作用
  I. hot pressing
  冬季建筑物内,外温度不同,由于空气的密度差,室处空气在底层一些楼层门窗缝隙进入,通过建筑物内部楼梯间等竖直贯通通道上升,然后在顶层一惯楼层的门窗颖隙排出。这种引起空气流动的压力称为热压。
  In winter, the temperature inside and outside the building is different. Because of the density difference of air, the air in the room enters into the gap between the doors and windows on some floors of the bottom floor, rises through the vertical through passage such as the stairwell inside the building, and then exits from the gap between the doors and windows on the first floor of the top floor. This pressure that causes air to flow is called hot pressure.
  建筑物外门,窗缝隙两侧的热压只是理论热压P的一部分,其大小与建筑物内部贯通通道的布罢,勇气状况以及门窗缝隙的密封性有关,即与空怕了由渗 入到没出出的阴力分有关。
  The thermal pressure on both sides of the outer door and window gap of the building is only a part of the theoretical thermal pressure P. its size is related to the layout of the internal through passage of the building, the state of courage and the tightness of the door and window gap, that is to say, it is related to the Yin force from the air to the air.
济南地暖安装
  二、地暖的分压作用
  2. Partial pressure of ground heating
  高层建筑冷风渗入量计算还应该考虑风速随建筑物高度变化而变化。风速随高度增加的变化都是存在规率的。
  In the calculation of cold air infiltration in high-rise buildings, the change of wind speed with the change of building height should also be considered. The wind speed changes with the increase of height are all with regularity.
  当风吹过建筑时,空气经过迎风面方向的门窗缝隙渗入,而从背风面缝隙渗出。冷风渗透量取决于门窗两侧的风压差。门窗两侧的风压差与空气穿 过该楼层整个流动整个流动途径阻力和风速本身肯有能量有关。
  When the wind blows through the building, the air penetrates through the door and window gap in the direction of the windward side, and seeps out from the leeward side gap. The infiltration of cold air depends on the air pressure difference between the two sides of the door and window. The wind pressure difference between the two sides of the doors and windows is related to the resistance of the whole flow path and the energy of the wind speed itself.
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