基于往复式通风的住宅通风效果对比分析

A Comparative Analysis of Residential Ventilation Effectiveness Based on Reciprocating Ventilation

随着高气密性的低能和超低能耗耗建筑的发展,建筑新风的保障成为建筑领域的重点问题之一。目前有多种通风方式,不同的通风方式会产生不同的通风效果。为更好的保障室内空气品质,需要选择合适的通风方式。本研究以住宅通风为主,选取单一卧室对比分析了采用常规混合通风与往复式通风二者的通风效果。根据Fluent软件的模拟计算结果,在空间维度,往复式通风室内高污染物浓度区域面积较小;在时间维度上,往复式通风周期性变化使得高污染物浓度的维持时间较短。基于以上结果,本文得到了相对常规混合通风,往复式通风具有更好通风效果的结论。

With the development of highly air-tight, low-energy and ultra-low-energy buildings, fresh air supply for building occupants has become a major challenge in the construction field. Each ventilation method has its own particular ventilation effects. It is important to select the proper ventilation method to obtain the best ventilation effect for each case. In the present study, the effectiveness of two ventilation methods in a residential bedroom was compared. The two methods were conventional mixing ventilation and reciprocating ventilation. From a spatial perspective, the results indicate that the reciprocating ventilation method generates a smaller region with high pollutant concentration. From a temporal perspective, the regions with high pollutant concentration are short-lived due to the dynamic and periodic nature of the flow field produced by reciprocating ventilation. The findings suggest that reciprocating ventilation has better ventilation effects in a bedroom than conventional mixing ventilation.