通过对某超高层玻璃幕墙建筑外表面的微气候参数的监测，发现高度是影响各参数垂直变化的主因。随着高度的增加，温度和湿度的变化均呈多“S”型变化，且为互补，顶层的温度较高而湿度最低；11∶00时建筑外表面垂直温差最大为6.7℃，而16∶00时垂直温差最小为0℃，测量时间段内平均垂直温差为2.7℃。随着高度的增加，建筑外表面的贴附气流速度逐渐增加，直至顶层有所回落，在建筑高度85%左右的平均风速最大，约为地面风速的7倍。温湿度和风速之间存在相互影响，较大的风速可以强化热湿交换，利于湿热地区夏季的通风降温和除湿。%It’s observed that the height is a major reason for vertical variation of microclimate parameters by continuous monitoring of the super high-rise glass curtain wall building. With the increase of height, the changes of both temperature and humidity present multi-S type and they are complementary. The roof has a higher temperature but lower humidity. The maximum, minimum and average vertical temperature differences are 6.7℃(obtained at 11∶00), 0 ℃(obtained at 16∶00) and 2.7 ℃ respectively. The vertical wind velocity outside the building increases always and decreases at the roof. The maximum wind speed appears in the 85% height of building, which is approximately seven times of surface wind speed. Temperature, humidity and speed velocity have interactions. A higher wind velocity will enhance the heat and moisture exchange, which favors condensation and dehumidification by ventilation for hot and humid areas.
展开▼
