相变特朗贝房关键影响因素优化研究

Optimization Study on Key Factors of PCM Trombe Room

相变特朗贝墙系统是一种把相变板与传统特朗贝墙耦合起来的被动式围护结构节能技术,该系统与传统特朗贝墙相比能更充分地利用太阳能及自然通风,改善建筑室内热环境,提高室内热舒适性,降低建筑运行能耗。研究基于TRNSYS软件建立了相变特朗贝房间的动态传热模型,分析了关键影响因素包括玻璃类型、外遮阳长度、蓄热墙厚度、风口面积、空气夹层厚度和相变温度对相变特朗贝墙性能的影响。采用单因素分析方法和Genopt优化软件分析了以上关键影响因素对室内热环境和全年建筑负荷的影响。通过与传统特朗贝墙的对比探讨了该结构在夏热冬冷地区的节能潜力。

Phase Change Material(PCM)Trombe wall system is a passive energy-saving technology of building envelope which integrates phase change materials with traditional Trombe wall.Compared with traditional Trombe wall system,this system can make full use of solar energy and nature ventilation,improving indoor thermal environment and reducing building operation energy consumption.Based on the TRNSYS software,the dynamic heat transfer model of the PCM Trombe room is established,and the key factors influencing the performance of PCM Trombe wall system are analyzed.These factors include type of glass,length of the shading,thickness of thermal storage wall,area of vents,thickness of air gap,and phase change temperature.The single factor analysis method and G enopt optimization software are used to analyze the influence of the above factors on indoor thermal environment and annual building load.The energy saving potential of the structure in hot summer and cold winter area is discussed by comparing with the traditional Trombe wall system.