基于夜间通风的相变房间室内热环境研究

Research on the indoor thermal environment of the phase change room based on the night ventilation

摘要：基于DesignBuilder和EnergyPlus软件，以成都地区白天室外最高温分别为30℃和32℃为代表日，采用相变材料结合夜间通风技术对室内热环境的影响进行了模拟，分析了房间的墙体结构、通风换气次数、通风时段对室内温度的影响。模拟结果表明，相变材料结合夜间通风能有效地改善室内热环境。换气次数为3ac／h、通风时段在1：00～7：00时，相变房间的室内平均温度降低了1．0-1．5℃。相变房间减短了空调期，比普通房间节省电量60．9％。

Based on DesignBuilder and EnergyPlus software,the representative day that the most high outdoor temperature were respectively 30 ℃ and 32℃ in Chengdu area,the influence of the phase change material and the night ventilation technology on the indoor thermal environment is simulated,the influence of the wall structure, the ventilation rate and the ventilation period for the indoor temperature is analyzed. Simulation results show：the phase change material and the night ventilation can effectively improve the indoor thermal environment. When the ventilation rate is 3 ac/h and ventilation period is 1：00~7：00, the indoor average temperature of the phase change room is reduced by 1.0-1.5 ℃. Compared to ordinary room, the phase change room can shorten cooling period and save electricity 60.9%.