技术中心

【英文篇名】 Numerical investigation on the effect of fresh air ratio on concentration distribution of indoor biological contaminant 【作者中文名】 李先庭; 孟彬彬; 赵彬; 【作者英文名】 By Li Xianting ★; Meng Binbin and Zhao Bin ★Tsinghua University; Beijing; China; 【作者单位】 清华大学; 【文献出处】 暖通空调, Hv 新风比; SARS; 数值模拟; 【英文关键词】 ventilation; fresh air ratio; SARS; numerical simulation; 【摘要】 采用数值计算方法 ,对带有回风的空调系统中类似SARS病毒颗粒的生物颗粒浓度的分布规律进行了模拟分析。提出了一种计算带有回风的空调系统中污染物浓度的方法 ,基于这种方法 ,比较了不同新风比下的室内生物颗粒浓度和安全距离。结果表明 ,新风比对整个空间的生物颗粒污染物的分布有重要影响。但是 ,全新风时和回风较少时并不存在质的差异 ,两种情况下的污染物平均浓度和安全距离都差别不大。 【英文摘要】 Numerically studies the concentration distribution of biological particle similar as SARS virus particle in HVAC system with return air. Proposes a method to calculate the concentration distribution of contamination in the system with the return air. Based on the method, compares the concentration of biological particle and safe distance under different fresh air ratio . It is shown that the fresh air ratio plays an important role in the system with return air. However, there is no great difference between ...