数学模型对水冷型PVT围护结构热性能的影响研究  

Effect of Mathematical Model on Thermal Performance of a Building Envelope Integrated Water-cooled Solar PVT System

作　　者：吴婷[1] 马良栋[1] 张吉礼[1] 赵天怡[1] 

机构地区：[1]大连理工大学建设工程学部

出　　处：《建筑热能通风空调》2015年第5期1-5,共5页Building Energy & Environment

基　　金："十二五"国家科技支撑计划(2013BAJ10B02)

摘　　要：本文针对PVT围护结构分别建立了一维传热模型和二维传热模型,分析了数学模型对水冷型PVT围护结构热性能的影响,结果表明:一维传热模型增大了冷却水得热量、墙体得热量和电池片发电量,减小了热损失,与一维传热模型的结果相比,二维传热模型由于考虑了吸热板和电池片在流体流动方向的导热,可以获得吸热板和电池片的温度分布,其计算结果具有较高的精度,对PVT围护结构的设计具有重要指导作用。The one-dimensional and two-dimensional heat transfer models of a building envelope integrated solar PVT system were established. The effects of mathematical models on thermal performance of the PVT envelope were analyzed. The results show that the heat gain of cooling water, heat transfer rate by conduction through the wall, and the photovoltaic yield increase, while heat loss through the top glass decrease using the one-dimensional heat transfer model.The results of two-dimensional heat transfer model have a higher accuracy compared with those of one-dimensional heat transfer model, because the heat transfer by conduction along direction of fluid flow is considered for the absorber plate and the cells in two-dimensional heat transfer model, the temperature distribution of the absorber plate and the cells can be attained. The results have an important guiding function for the design of the PVT envelope.

关 键 词：数学模型 PVT围护结构 热性能 

分 类 号：TU111.4[建筑科学—建筑理论]