负压隔离病房空气环境控制研究

对负压隔离病房的空气环境以及病房内污染气体扩散机理进行了研究,利用数值模拟方法分析病房内流场、压力场、温度场和污染气体浓度场的整体分布,提出两个气流组织改进方案,优化病房污染气体扩散控制效果。模拟结果表明,三种通风方案均能保证不同区域之间满足大于5 Pa的压力梯度,病房温度分布满足夏季室内空调温度设计要求,采用顶送风/病床上方布置排风口的气流组织,能保证病房达到病患舒适度,并且能有效控制污染气体扩散。

Study on Air Environment Control in Negative Pressure Isolation Ward

Study the air environment of the negative pressure isolation ward and the sensation mechanism of pollution gas in the ward. The numerical simulation method was used to analyze the overall distribution of the flow, pressure, temperature and pollution gas concentration fields in the ward; two airflow organization improvement solutions were proposed to optimize the effect of pollution gas diffusion control in the ward. The simulation results show that all three ventilation solutions can ensure a pressure gradient of more than 5 Pa between different areas; the temperature distribution of the ward satisfies the design requirements of indoor air-conditioning temperature in summer, the airflow organization of the ward with top air supply and exhaust air outlets above the beds can ensure patient comfort and effectively control the diffusion of pollutant gases.