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首页> 外文会议>Third International Conference on Air Pollution Ⅲ - Vol.2: Air Pollution Engineering and Management, Sep 26-29, 1995, Porto Carras, Greece >Ventilation in enclosures with a horizontal partition
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Ventilation in enclosures with a horizontal partition

机译：具有水平隔板的机柜中的通风

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摘要

An experimental study of ventilation in enclosures with a horizontal partition has been performed which indicates the following: (a) The velocity along the main axis of the upper compartment is reduced with decreasing Re number (decreasing "wind" velocity) indicating the diffusive character of flow for low Re numbers. (b) The effect of the opening thickness on the flow in the upper compartment is to reduce the velocities with decreasing opening height indicating higher ventilation effectiveness with greater opening height. (c) Ventilation time increases and hence ventilation effectiveness decreases with increasing Re number (increasing "wind" velocity). (d) Ventilation time increases and ventilation effectiveness decreases with increasing density (temperature) difference between external "wind" and enclosure. (e) Increase of horizontal partition thickness (opening thickness) has as a result the increase of ventilation effectiveness in the upper compartment of the enclosure.
机译：对水平分隔的围墙通风进行的实验研究表明：（a）随着Re值的减小（“风速”减小），沿上层隔室主轴线的速度减小，这表明了扩散性。低Re数的流量。 （b）开口厚度对上层隔室中气流的影响是随着开口高度的减小而降低速度，这表明更大开口高度时通风效率更高。 （c）通风时间增加，因此通风效率随Re数增加（“风”速增加）而降低。 （d）随着外部“风”和外壳之间的密度（温度）差异的增加，通风时间增加，通风效率降低。 （e）由于增加了水平隔板的厚度（开口厚度），因此提高了机柜上部隔室的通风效率。

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