送风口对传染性隔离病房室内定向气流的影响

本文分析了送风口对传染性隔离病房室内定向气流的影响，指出在要求形成定向气流的场合，应综合考虑送风口的位置、形式与特性。采用CFD模拟与实验测试的方法，利用相关评价指标，在特定气流分布方式的隔离病房中，选取三种典型的送风口进行研究，从而得出了适合形成定向气流的送风口形式。模拟和实验发现，在采用天花板顶送风和异侧下排气流分布方式的隔离病房中，选用送风自由度较大的双层百叶送风口，调节百叶到合适的角度可实现较为理想的病房气流分布。

Effects of Supply-Air Outlet on Unidirectional Air Distribution in Contagious Isolation Wards

This paper analyzed the effects of different supply-air outlets on unidirectional air distribution in contagious isolation wards, and pointed out that the position, type and characteristic of supply-air outlets should be considered synthetically where require unidirectional air flow. Based on the CFD simulation and experiment, the paper evaluated by relevant indexes, studied three typical air-outlets in isolation wards of special air distribution and found out the appropriate one. Conclusion was made that in top-supplying and opposite down-exhausting air pattern ward, using the double deflection grille which has high degree of freedom at certain vane angle can achieve better air distribution.