首页|寒冷地区光伏墙体综合传热特性的数值模拟研究

寒冷地区光伏墙体综合传热特性的数值模拟研究

Numerical Simulation for the Comprehensive Heat Transfer Characteristics of Photovoltaic Walls in Cold Regions

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近年来BIPV项目逐渐增多,对光伏墙体的研究多以光伏组件电热性能为重点,少有结合节能墙体热工性能对不同构造光伏墙体的综合传热特性优化开展的研究.以天津地区为应用场景,分别建立符合天津市居住建筑四步节能设计技术指标的基础墙体、普通光伏墙体和嵌入保温隔热一体化板的新型光伏墙体的传热模型,采用ANSYS FLUENT软件对其温度分布、表面热流密度进行数值模拟,对模拟结果进一步分析获得不同类型墙体的传热系数和光伏组件的电性能.结果表明:较基础墙体,夏季普通光伏墙体内表面得热量可增加 46.88%,冬季普通光伏墙体内表面失热量可减少5.47%;新型光伏墙体中的保温隔热层厚度宜不小于20 mm,此时,夏季新型光伏墙体内表面得热量最大可增加18.16%,冬季新型光伏墙体内表面失热量最小可减少20.07%.基于计算结果,寒冷地区的建筑外墙应用光伏组件时,散热构造措施可简化.
In recent years,the number of BIPV projects is increasing gradually.Most of the studies on photovoltaic walls focus on the electrical and thermal performance of photovoltaic modules,and few studies on the optimization of the comprehensive heat transfer characteristics of photovoltaic walls of different structures combined with the thermal performance of energy-saving walls.Taking Tianjin area as the application scene,this paper establishes heat transfer models of basic wall,ordinary photovoltaic wall and new photovoltaic wall embedded with thermal insulation integrated board in accordance with the four-step energy-saving design technical index of residential buildings in Tianjin respectively.The temperature distribution and surface heat flux of the wall were numerically simulated by ANSYS FLUENT software,and the heat transfer coefficient of different types of wall and the electrical performance of photovoltaic modules were obtained by further analysis of the simulation results.The results show that,compared to basic walls,the surface heat gain of ordinary photovoltaic walls in summer can be increased by 46.88%,the surface heat loss of ordinary photovoltaic walls in winter can be reduced by 5.47%,the thickness of the insulation layer in the new photovoltaic wall should not be less than 20 mm,at this time,the maximum surface heat gain of the new photovoltaic wall in summer can be increased by 18.16%,and the minimum surface heat loss of the new photovoltaic wall in winter can be reduced by 20.07%.Based on the calculation results,the heat dissipation structural measures can be simplified when the photovoltaic modules are used in the exterior walls of buildings in cold areas such as Tianjin.

ordinary photovoltaic wallnew photovoltaic wall embedded with thermal insulation integrated boardcomprehensive heat transfer characteristics

朱丽、高煜喆、张吉强、尹宝泉

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天津大学 建筑学院,天津 300072

APEC可持续能源中心,天津 300072

江西师范大学 城市建设学院,南昌 330022

普通光伏墙体 嵌入保温隔热一体化板的新型光伏墙体 综合传热特性

天津大学科研横向项目

6122020002

2024

建筑节能(中英文)
中国建筑东北设计研究院有限公司

建筑节能(中英文)

CSTPCD
影响因子:0.695
ISSN:2096-9422
年,卷(期):2024.52(4)
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