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首页> 外文会议>International Conference on Built Environment and Public Health(BEPH2004); 20041206-08; Shantou(CN) >Simulation and Analysis of Airflow Model in Sickroom Generated By the ACD
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Simulation and Analysis of Airflow Model in Sickroom Generated By the ACD

机译：ACD生成的病房气流模型的仿真与分析

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摘要

The characteristics of indoor airflow distribution determine the movement performance of the minute granule contamination in air. In this paper, according to control demands of the concentration of minute granule contamination with virus and bacteria in air of the sickroom, the characteristics of indoor airflow distribution, which are generated by air clean-disinfector (ACD) under the conditions of various air volume and styles of supplying and return air, have been simulated by indoor zero-equation turbulence model and CFD. The results show that not only can the airflow model generated by the ACD meet the design demands to control indoor minute granule contamination, but also there is a suitable air volume range for a given room. The performance of the indoor airflow distribution will be bad with the increase of supply-air angle of the ACD and there is a maximum value for the supply-air angle, otherwise a rising airflow will occurred in the sickroom. There will not be an obvious influence on the performance of the indoor airflow distribution by changing the size of the return air opening, but the resistance of the return air opening will vary greatly according to the simulation of indoor airflow distribution. All these results will be the theoretical basis to develop the ACD and control it.
机译：室内气流分布的特性决定了空气中微小颗粒污染物的运动性能。本文根据病房空气中细小颗粒病毒和细菌污染浓度的控制要求，通过空气净化消毒器（ACD）在各种风量条件下产生的室内气流分布特征通过室内零方程湍流模型和CFD模拟了供气和回风的方式。结果表明，ACD生成的气流模型不仅可以满足控制室内微小颗粒污染的设计要求，而且对于给定的房间也有合适的风量范围。随着ACD送风角度的增加，室内气流分布的性能会变差，并且送风角度的最大值会变大，否则病房会出现气流上升。通过改变回风口的尺寸，不会对室内气流的分配性能产生明显影响，但是根据室内气流分布的模拟，回风口的阻力会发生很大变化。所有这些结果将成为开发和控制ACD的理论基础。

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