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A model for calculating single-sided natural ventilation rate in an urban residential apartment

机译：城市住宅公寓单面自然通风率的计算模型

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Natural ventilation is an energy-efficient ventilation method for residential buildings, but it is not easy to determine the natural ventilation rate. This investigation developed a simple model for calculating the ventilation rate for an apartment with single-sided natural ventilation with buoyancy and wind pressure effects, based on a wind-driven model. To validate the model, field measurements were conducted in an apartment in an urban residential building in Tianjin, China. The experiment measured indoor and outdoor air temperature, wind speed and direction, wind pressure coefficient at an opening of the apartment, and ventilation rate through the single opening. The results indicated that the wind pressure coefficients calculated by Eq.12 did not agree well with the measured data. However, most of the measurements show a stronger buoyancy effect than wind pressure effect. Our new model was able to predict the ventilation rate with an average error of 13.1%. When we used six other models found in the literature to predict the ventilation rate, the errors ranged from 12.9% to 46.1%. Thus, not only does our model perform very well in predicting the ventilation rate, but it also shown the interaction between buoyancy and wind pressure.
机译：自然通风是用于住宅建筑物的节能通风方法，但是确定自然通风率并不容易。这项研究基于风力驱动模型，开发了一个简单模型，用于计算具有浮力和风压效应的单侧自然通风公寓的通风率。为了验证该模型，在中国天津某城市居民楼的公寓中进行了现场测量。该实验测量了室内和室外的空气温度，风速和风向，公寓开口处的风压系数以及单个开口处的通风率。结果表明，公式12计算出的风压系数与实测数据不一致。但是，大多数测量显示出比风压效应更强的浮力效应。我们的新模型能够预测通风率，平均误差为13.1％。当我们使用文献中发现的其他六个模型来预测通气率时，误差范围为12.9％至46.1％。因此，我们的模型不仅可以很好地预测通风量，还可以显示浮力和风压之间的相互作用。

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