夏季不同通风方式的房间内甲醛扩散模拟研究

Simulation Study on Formaldehyde Diffusion in Rooms with Different Ventilation Modes in Summer

采用CFD 的方法对地板送风、混合通风及置换通风房间内的温度场、速度场及甲醛分布情况进行数值模拟,对不同通风方式的房间内的甲醛含量进行对比分析。模拟结果表明:甲醛的分布主要受室内空气气流组织的影响,甲醛浓度出现分层现象随高度增加而增加,地板送风方式下的甲醛含量较其他两种送风方式低。对不同通风方式房间内的甲醛扩散进行模拟及分析,对空调房间采用哪种通风方式降低室内甲醛含量具有一定的指导意义。

In this paper, CFD method is used to simulate the temperature field, velocity field and formaldehyde distribution under floor air supply, mixed ventilation and displacement Ventilated and floor ventilation. in floor ventilation, mixed ventilation and displacement ventilation . The formaldehyde content in rooms with different ventilation modes is compared and analyzed. The simulation results show that the distribution of formaldehyde is mainly affected by indoor air distribution. The formaldehyde concentration increases with the increase of height. The formaldehyde content in floor air supply mode is the lost than the other two air supply modes. In this paper, the formaldehyde diffusion in different ventilation modes is simulated and analyzed, which ventilation modes are used to reduce the indoor formaldehyde content in air-conditioned rooms has certain guiding significance.