节能建筑室内颗粒状污染物浓度特性研究

Characteristics of Indoor Particle Pollutant Distribution in Energy Conversation Building

摘要: 对空调建筑室内颗粒污染物浓度分布特性进行了研究，建立了全空气空调系统室内污染物扩散模型，模拟分析了新风量、室外污染物浓度、新风过滤效率和回风旁通系数对室内污染物浓度的影响规律。研究表明，一次回风方式存在着一个临界新风过滤效率，只有大于该临界效率时，增加新风量才能减少室内颗粒污染物浓度。二次回风方式下，新风比对室内空气品质的影响程度大于回风旁通系数。

Abstract: The objective of this paper is to investigate the concentration distribution of particle pollutants in air conditioning buildings. A diffusion model for indoor pollutants of all air conditioning was built. The effects of fresh air, outdoor pollutants concentration, filtration efficiency of fresh air, and return-air by-pass coefficient on indoor concentration distribution were discussed. The result shows that primary return air has critical filtration efficiency and the effect of fresh air ratio on indoor air quality is greater than by-pass coefficient in secondary return-air system.