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Empirical study of a wind-induced natural ventilation tower under hot and humid climatic conditions

机译:炎热潮湿气候条件下自然风塔的实证研究

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摘要

Stack ventilation and wind-induced ventilation are the two main methods for inducing natural ventilation. Stack ventilation by itself cannot create enough air flow to achieve good indoor air quality for building occupants under hot and humid climatic conditions. The low performance of stack ventilation in hot and humid climate is due to the low temperature differences between indoor and outdoor temperature of a building. On the other hand, the wind-induced ventilation method performance is independent of low temperature difference. Therefore, it has potential use to improve the indoor air quality for buildings in the hot and humid climate. This paper examines the wind-induced natural ventilation tower performs under hot and humid climate. The study reveals that the wind-induced ventilation tower has higher extraction airflow rate comparing to other wind ventilators in the market. Analysis shows the wind-induced natural ventilation tower can produce high air changes per hour (ACH) for indoor building environment in the hot and humid climate. Study results also show the wind-induced ventilation tower's extraction flow rate is 10,000 m~3 /h at external wind velocity of 0.1 m/s. With the same external wind velocity, it produces average of 57 ACH. The results of this study will be useful for designing wind-induced natural ventilation tower in hot and humid climate.
机译:烟囱通风和风诱导通风是诱导自然通风的两种主要方法。在炎热和潮湿的气候条件下,烟囱通风本身无法产生足够的气流来获得良好的室内空气质量。在炎热和潮湿的气候中,烟囱通风性能低下是由于建筑物的室内和室外温度之间的温差低。另一方面,风诱导通风方法的性能与低温差无关。因此,在炎热潮湿的气候下,它具有改善建筑物的室内空气质量的潜在用途。本文研究了在炎热和潮湿气候下由风引起的自然通风塔的性能。研究表明,与市场上的其他风力通风机相比,风力诱导通风塔具有更高的抽风量。分析表明,在炎热和潮湿的气候下,由风引起的自然通风塔可以在室内建筑环境中每小时产生较高的换气量(ACH)。研究结果还表明,在外部风速为0.1 m / s时,风诱导通风塔的抽气流量为10,000 m〜3 / h。在相同的外部风速下,平均产生57 ACH。这项研究的结果对于在炎热和潮湿的气候中设计风致自然通风塔将是有用的。

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