解剖台排风罩流场及对污染气体的控制研究

The Flow Field of Exhaust Hood of Dissection Table and the Control of the Polluted Gas

本文采用CFD技术模拟了解剖台内部排风罩排风的气流特性及污染气体的控制效果。研究结果表明:解剖台内部排风罩能够有效控制污染气体向外扩散,降低污染源所散发的污染气体浓度。在解剖台排风罩两侧的呼吸区高度(Z=1.2 m),两边位置排风罩对污染气体的控制效果优于中间位置。在相同的排风量下,90°排风罩的排污效果要优于35°排风罩。且污染气体浓度随着排风罩风速的增加而降低。

This paper uses CFD technology to simulate the airflow characteristics of the exhaust hood inside the dissection table and the control effect of the polluted gas. The research results show that the internal exhaust hood of the dissecting table can effectively control the outward diffusion of pollutant gas and reduce the concentration of pollutant gas emitted by the pollution source;the height of the breathing zone on both sides of the exhaust hood of the dissecting table(Z=1.2 m), The control effect of the wind hood on the polluted gas is better than the middle position;under the same amount of exhaust air, the discharge effect of the 90° exhaust hood is better than the 35° exhaust hood;and Pollution gas concentration decreases as the wind speed of the exhaust hood increases.