高散热密闭空间环境通风降温的模拟分析

Numerical Simulation of Cooling Ventilation in Closed Space with Intensive Heat Releasing

针对高散热密闭空间环境通风降温问题,建立了对所设计通风降温系统进行预测的模拟试验模型。试验结果表明:采用全新风通风时,送排风量较大,空间环境温度场呈不均匀分布,部分空间环境温度超过设计温度上限。采用复合通风时,送排风量显著下降,环境温度场得到明显改善,尤其是高发热设备附近空间环境温度下降更加显著。

To solve the problem of ventilation and cooling in closed space with intensive heat-releasing rate,a simulation model was built to predict the design result.The results show that in the all-fresh air scheme,the temperature field is nonuniform in the intensive heat-releasing space,with some position higher above the upper temperature limit; while in the compound ventilation scheme,the temperature distribution is significantly improved,especially for positions near the equipments with intensive heat-releasing rate.