设计用于防止自然通风烟囱回流的空气格栅-实验研究

IF 0.5 Q4 ENGINEERING, CIVIL
Piotr Koper, Dominik Szpank
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引用次数: 0

摘要

摘要本文介绍了用于自然通风烟囱防回流的空气格栅的实验研究结果。对于每个格栅压降测量不同的气流速率,在两个流动方向。试验了两个不同原理的∅100 mm格栅:一个带有活动襟翼,另一个形状应大大增加回流时的水力损失。为了进行比较,还对普通空气格栅进行了测试。结果表明,带有活动襟翼的格栅按预期工作。与普通格栅相比,它在前进方向上的水力损失略高,几乎完全关闭了回流。另一个,扩散形状的烤架不像预期的那样工作。它在两个方向上都有很高的水力损失,并且用反向流动改变空气阻力的效果几乎不明显。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Air Grilles Designed to Prevent Backflows in Natural Ventilation Stacks – Experimental Investigation
Abstract The paper presents the results of the experimental research on the air grills designed to stop backflows in natural ventilation stacks. For each grill pressure drop was measured for different airflow rates, in both flow directions. Two ∅ 100 mm grills working on different principles were tested: one with moving flaps, and one shaped in a way that should greatly increase the hydraulic losses during backflow. For comparison, the ordinary air grill was also tested. The results show that the grill with moving flaps works as intended. With only slightly higher hydraulic losses in the forward direction compared to ordinary grill, it shuts off the backflows almost completely. The other, diffuser-shaped grill doesn’t work as intended. It has very high hydraulic losses in both directions, and the effect of changing the air resistance with the reverse flow is barely noticeable.
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