地铁车厢空调气流组织仿真及优化

Simulation and Optimization on Air Diffusion in a Subway Passenger Car

基于空气运动的湍流流动方程,对地铁车厢内的空调气流组织进行仿真,并引入能量利用系数评价空调气流组织能量利用的有效性。根据仿真结果,对原始设计方案中回风口与排风口的布置进行了优化,结果表明优化方案提高了地铁车厢空调气流组织的能量利用系数,使空调冷量得到更充分的利用。因此,气流组织仿真可作为一个有效的手段应用于地铁车厢空调的设计与优化中。

Based on the turbulence model of air flow, air diffusion in a subway passenger car was simulated, and the index of energy utilization coefficient was used to evaluate the energy utilization efficiency of air diffusion. According to the simulation, the arrangement of the return air inlets and exhaust outlets in the initial design was optimized. The result indicated that the optimization enhance the energy utilization efficiency of air diffusion, which reflected a more effective use of the cooling from the air conditioning system in the subway. Therefore, air diffusion simulation can be applied in design and optimization of air conditioning system in a subway passenger car.