隔离病房的环境保障与气流组织有效性

Effectiveness of air distribution and pollutant control in isolation wards

基于新型冠状病毒肺炎医院的典型隔离病房,模拟了传统散流器顶部送风、竖壁贴附送风、竖壁贴附加导流板(实践中导流板可为活动折叠式)送风模式下的病房室内热环境和病原微生物的排除效果,给出了病房气流组织的有效性评价。结果表明:采用单风口竖壁贴附加导流板送风的气流组织形式,病房内1.5 m呼吸区高度范围通风效率为2.9~6.5,平均速度为0.13 m/s,平均温度为21.8℃,其污染物排除效果优于传统散流器顶送下排,推荐作为隔离病房气流组织的优先选用形式。

Based on the typical isolation wards of COVID-19,simulates the indoor thermal environment and the removal effect of pathogenic microorganisms under the traditional air diffuser ceiling supply,the vertical wall-based attachment ventilation,and the vertical wall-based attached air supply with the deflector(in practice,the deflector can be folded).Evaluates the effectiveness of indoor air distribution.The results show that the air distribution of vertical wall-based attachment ventilation with the deflector,at the 1.5 m height breathing zone in the ward,has higher ventilation efficiency of 2.9 to 6.5,an average air velocity of 0.13 m/s,and an average temperature of 21.8℃.The pollutant removal effect is better than that of the air ceiling supply with traditional diffusers,which can be recommended as the preferred air distribution mode in isolation wards.