不同送风方式对空调房间内污染物质量浓度分布的影响

发布时间：2019-03-21 13:01

【摘要】：目的研究不同送风方式对空调房间内污染物的扩散影响,确定有利于消除污染物的送风方式,改善具有污染源的办公室的空气品质,为设计合理的空调系统提出建议.方法采用Airpak软件模拟了4种不同送回风方式、3种不同送风量和3种不同污染物散发量,通过模拟得到所选取不同位置的污染物的质量浓度,分析污染物质量浓度的分布特点,得出不同送风方式和不同污染物散发量下室内污染物质量浓度的分布情况.结果比较得出顶送侧回的送风方式比其他3种送风方式除污效果好,送风量的增加使污染物质量浓度明显降低,但是要控制在合适的风速范围内.减小污染物的排放量也使室内污染物的质量浓度明显降低.结论采用顶送侧回的送风方式,在一定风速范围内增加送风量即增加送风速度可降低室内污染物质量浓度.
[Abstract]:Aim to study the effects of different air supply modes on the diffusion of pollutants in air-conditioned rooms, determine the air supply modes which are conducive to the elimination of pollutants, improve the air quality of offices with pollution sources, and put forward some suggestions for the design of a reasonable air-conditioning system. Methods Airpak software was used to simulate four different air supply modes, three different air volumes and three different pollutant emission amounts. The mass concentrations of pollutants in different locations were obtained by simulation, and the distribution characteristics of pollutant mass concentrations were analyzed. The distribution of indoor pollutant concentration under different air supply mode and different pollutant emission amount was obtained. The results show that the air supply mode of top-side return is better than the other three air supply modes, and the mass concentration of pollutants decreases obviously with the increase of air flow rate, but it should be controlled within the appropriate wind speed range. The mass concentration of indoor pollutants can also be reduced by reducing the emission of pollutants. Conclusion the indoor pollutant concentration can be reduced by increasing the air supply speed and increasing the air flow rate within a certain range of wind speed by the way of top-side return air supply.
【作者单位】：沈阳建筑大学市政与环境工程学院;
【基金】：国家自然科学基金项目(51308353) 辽宁省自然科学基金项目(2014020072)
【分类号】：X51;TU83

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