基于温湿分布及流场仿真的高压配电室通风优化

VENTILATION OPTIMIZATION OF HIGH VOLTAGE DISTRIBUTION ROOM BASED ONTEMPERATURE AND HUMIDITY DISTRIBUTION AND FLOW FIELD SIMULATION

配电室设备对运行环境的要求比较高,现有环境控制方式有自然对流和风机相互配合的通风方式,从而达到对室内环境的降温、除湿、净化空气的效果。但是考虑到两者之间的协调控制、耗能、控制效果等问题,对配电室建立简化三维模型,并对配电室内温湿和气流分布进行计算机模拟。在风机功率相同的情况下,通过对比分析四种风机组合配置下配电室内部温湿度和气流分布情况得出通风口布置对室内环境控制有很大的影响,且进出风口组合布置更有利于风场的整体流动。进出风口的对称布置能有效地使风场均匀分布于配电柜周围,使室内气流形成稳定层流,从而达到更好地控制室内环境的效果。

The equipment in the distribution room has a high requirement for the operating environment.The existing environmental control mode has the ventilation mode of natural convection and mutual coordination between fans,so as to achieve the effect of cooling,dehumidifying and purifying the indoor environment.Considering the coordination control between the two mode,energy consumption and control effect and other issues,this paper establishes a simplified 3D model of the distribution room.We simulated the temperature and humidity and airflow distribution in the distribution room by computer.Under the condition of the same fan power,the temperature and humidity and airflow distribution in the distribution room under four combined fan configurations were compared and analyzed.It is concluded that the ventilation arrangement has a great influence on the indoor environment control,and the combined arrangement of inlet and outlet is more conducive to the overall flow of the wind field.The symmetrical arrangement of the inlet and outlet can effectively make the wind field evenly distributed around the distribution cabinet and make indoor air flow form stable laminar flow,so as to achieve better control of indoor environment.