单侧进风口面积对工业厂房热压通风量的影响
Influence of single side inlet area on stack effect pressure ventilation rate in industrial plants
摘要：
针对工业厂房受工艺条件限制或辅助用房影响，自然进风口面积无法保证，进而影响热压通风效果的问题，通过数值模拟，研究了相同热源强度条件下，单侧进风口面积减小对热压通风量的影响，对比了6种不同热源强度条件下，单侧墙面进风口面积减小对热压通风量的影响。结果表明：对于集中热源位于厂房中部的工业厂房，在相同热源强度下，随着进风口面积的减小，热压通风量总体变化趋势为先稍微增大、后减小；随着热源强度增大，进风口面积减小对热压通风量影响作用逐渐削弱。
Abstract：
Aiming at the problem of unguaranteed natural air inlet area under the restriction of process conditions or the influence of auxiliary rooms in industrial plants and then affecting the effect of stack effect pressure ventilation, studies the influence of the single side air inlet area reduction on the stack effect pressure ventilation rate at the same heat source intensity by numerical simulation, and compares the influence of the air inlet area reduction on the ventilation rate at six different heat sources intensity. The results show that for the industrial plant with the centralized heat source, the overall variation trend of the stack effect pressure ventilation rate increases slightly at first and then decreases with the decrease of the air inlet area at the same heat source intensity, and the influence of the air inlet area reduction on the stack effect pressure ventilation rate gradually weakens with the increase of the heat source intensity.
Keywords:industrial plant, stack effect pressure ventilation, inlet area, heat source intensity, ventilation rate, numerical simulation