复合空调室内气态污染物对流输运模拟
Transportation of indoor airborne pollutant with a coupled ventilation system
摘要：
利用CFD数值模拟方法分析了复合窗式空调系统对建筑室内气态污染物输运过程的影响。采用雷诺应力模型(RSM)描述了室内空气和污染物对流输运过程，并详细探讨了复合窗式空调系统的送风速度、新风比、净化效率和室内热源强度等对室内气态污染物对流输运过程的影响。计算结果表明，提高送风速度、新风比以及净化效率都能有效降低室内气态污染物平均浓度。值得注意的是，当送风速度超过0.75 m/s后，室内气态污染物浓度水平维持恒定；空调系统即使按全新风模式运行，也不能彻底排除室内污染物。
Abstract：
Analyses the effect of a window-type air conditioner on the progress with the CFD. Establishes the Reynolds stress model (RSM) to describe the indoor air flow and contaminant transportation. Illustrates the effect of supply air velocity, fresh air ratio, cleaning efficiency and heat source intensity on the airborne pollutant transportation. The results show that the reduction of indoor pollutant concentration can be accomplished by increasing supply air velocity, fresh air ratio or cleaning efficiency. However, indoor pollutant concentration is acceptable when supply air velocity exceeds 0.75 m/s. It approaches to a small value (not zero) even in all fresh air operation mode.
Keywords:computationalfluiddynamics(CFD),airbornepollutant,coupledventilation,freshairratio,cleaningefficiency