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How to quantify natural ventilation rate of single-sided ventilation with trickle ventilator?

机译：如何用涓流呼吸机量化单面通风的自然通风率？

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摘要

This study quantifies the natural ventilation rate in single-sided natural ventilation with a trickle ventilator, inserted in a window frame or a shutter box. The seasonal characteristics of natural ventilation in actual residential conditions were examined by long-term field measurements in a multi-residential building during spring and summer seasons. The wind velocities and pressure differences between indoors and outdoors in the summer season, which are the driving forces of natural ventilation, were relatively lower compared to the spring season. The turbulence intensity was greater in summer when the outdoor wind velocity was lower.During this study about 90% of the outdoor wind velocity was less than 2.5 m/s, and the wind speed and wind direction constantly fluctuated. The ventilation rate of the trickle ventilator was quantified by four methods: the tracer gas method, inlet air velocity-based, pressure difference-based, and reference wind velocity-based. The tracer gas method was considered the reference to which the other three methods were compared. The calculation method based on the indoor/outdoor pressure difference, which is widely used for calculating the natural ventilation rate, failed in this case to capture the actual natural ventilation rate; only 63% of the ventilation rate quantified by the tracer gas method could be explained by this method. In addition, the reference wind velocity-based quantification showed the worst agreement, with an error rate around 54%. The inlet air velocity-based quantification of the ventilation rate showed the best agreement with the results of the tracer gas method in the trickle ventilator.
机译：本研究量化了用涓流呼吸机的单面自然通风中的自然通风率，插入窗框或快门盒中。在春季和夏季多住所的多住所的长期现场测量检查了实际住宅条件的自然通风的季节性特征。与春季相比，在夏季的夏季风速和户外和户外的压力差异相对较低。当室外风速下降时，夏季湍流强度更大。该研究约90％的室外风速小于2.5米/秒，风速和风向不断波动。涓流呼吸机的通风速率通过四种方法量化：示踪气体方法，基于进气速度，基于压差和基于参考风速的。示踪剂气体方法被认为是比较其他三种方法的参考。基于室内/室外压力差的计算方法，广泛用于计算自然通风率，在这种情况下失败，以捕获实际的自然通风速率;通过该方法可以解释由示踪气体方法量化的通风速率的63％。此外，基于参考风速的量化显示了最糟糕的一致性，错误率约为54％。通风速率的入口空气速度的量化显示了与涓流通风机中的示踪气体方法的结果最佳。

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