【作者】 孟剑辉； 张强；

【Author】 Meng jianhui;Zhang Qiang;

【机构】 西安建筑科技大学；

【摘要】 本文分析了影响置换通风房间通风效率的因素,并采用双室模型建立了计算通风效率的数学模型。通过对计算结果的分析,得出了通风效率随这些因素的变化规律。结果表明:通风效率随室外气温、房间高度、热源垂直方向位置、热源发射率、送风量、送风温度的增大而增大,随热源水平面积、热源发热量和下区空调温度增大而降低。热源水平位置则对通风效率没有影响。更多还原

【Abstract】 In this paper, the factors affecting ventilation efficiency of displacement ventilation room were analyzed and mathematical model of ventilation efficiency was set up based on the two-cell model theory.Through calculating and analyzing, the affecting regularity was gained. The results show that : ventilation efficiency increases with the rising of outdoor air temperature, room height, vertical location of heat source, emissivity of the heat source, flow rate and temperature of the air supply, and decreases with the rising of horizontal area and heat released of the heat source, air temperature of occupied zone. Horizontal location of the heat source has no effect on ventilation efficiency.更多还原