病房通风CFD模拟及其方案优化  

Simulation and Optimization of Ventilation in Hospital Room

作　　者：骆红 廖国进[2] 

机构地区：[1]中石油东北炼化工程有限公司锦州设计院,辽宁锦州121001 [2]辽宁工业大学机械工程与自动化学院,辽宁锦州121001

出　　处：《沈阳师范大学学报（自然科学版）》2010年第2期243-246,共4页Journal of Shenyang Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(50376067);辽宁省教育厅科学基金资助项目(2008316)

摘　　要：分析了双人间病房的通风情况。病房里的床帘和隔墙将病房分成若干个相对独立空间,这样的设计既可以令病人感到舒适,又便于医生治疗,但这样并不利于病房的通风。这个通风系统包括放置在门厅天花板上的,可以将空气送入房间的吸气口以及放在浴室的排气扇。假设空气是等温的稳态流动,数值模拟就是求解房间里空气的质量、动量及其在房间内平均年龄(停留时间)的方程组。通过分析病房里空气的平均年龄分布和速度场,可以了解病房里的通风情况。对原始建筑设计模型进行模拟计算,发现病房的通风方面存在着严重的不足。并针对存在的问题,在便于医疗基础上,对病房的通风设计方案进行了改进。最后给出了既可以令病人觉得舒适,成本又低的病房通风设计最佳方案。This paper analyses the ventilation airflow pattern in a two-bedded hospital room.The whole space of the room is divided in modules by means of curtains and internal partition walls.This configuration has many advantages from the point of view of comfort and medical assistance,but it implies an important restriction as far as ventilation is concerned.The ventilation system consists of an induction unit placed inside the hall ceiling blowing into the room and an exhaust fan in the bathroom.Numerical model solves mass,momentum and mean age of air equations assuming isothermal and stable flow.Ventilation is evaluated by analysing the age of air and the velocity fields inside the room.The results with the initial architectural design of the room show a very deficient ventilation at the patients site.Alternative configurations have been studied,allowing for correct ventilation without renouncing to the assistance advantages.Finally,the optimum configuration of the room is provided,regarding both the comfort of the patients and the cost of execution.

关 键 词：病房 通风 效率 空气的平均年龄 CFD 

分 类 号：TU834.5[建筑科学—供热、供燃气、通风及空调工程]