严寒地区BIPV/T墙体热湿传递特性研究

doi:doi:10.19912/j.0254-0096.tynxb.2024-0768

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严寒地区BIPV/T墙体热湿传递特性研究

更新时间：2025-10-22

- 严寒地区BIPV/T墙体热湿传递特性研究
- Vol. 46, Issue 9, Pages: 501-509(2025)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：doi:10.19912/j.0254-0096.tynxb.2024-0768
  CLC： TK515
- Published Online：14 October 2025，
  
  Published：2025
- 稿件说明：
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[J]. 2025, 46(9): 501-509.
DOI：

[J]. 2025, 46(9): 501-509. DOI： doi:10.19912/j.0254-0096.tynxb.2024-0768.

摘要

由于建筑光伏光热一体化系统（BIPV/T）墙体在结构上与普通墙体差别较大

会导致其保温隔湿性能发生改变

该研究以严寒地区沈阳为例

建立热湿耦合的BIPV/T墙体二维数值模型

研究冬季工况下BIPV/T墙体内部热湿传递情况

并通过实验验证了该方法的有效性。将BIPV/T墙体与普通外保温墙体研究结果进行对比

结果表明：BIPV/T墙体的时间滞后因子τ=4~5 h和衰减因子f =0.064

相对于普通墙体的τ=2~4 h和f =0.151

BIPV/T墙体热工性能较好

可显著提升室内环境的热舒适性;BIPV/T墙体的内部含水量比普通墙体降低6%

并能加速墙体内含水量下降

使BIPV/T墙体内含水量维持在较低状态;BIPV/T墙体产生冻融损伤的概率比普通墙体降低61.56%

提升了建筑围护结构的耐久性;且BIPV/T墙体的空气通道可起到为光伏组件降温作用

其光电转化效率始终维持在18%以上。

Abstract

As building integrated photovoltaic/thermal（BIPV/T）walls are structurally different from ordinary walls

which leads to changes in their thermal and moisture insulation performance

this study takes Shenyang

a cold region

as a case study. A two-dimensional numerical model of coupled heat and moisture transfer was established to study the internal transfer processes inside the BIPV/T walls under the winter conditions

and to experimentally validate the validity of the method. Comparing the BIPV/T wall with a conventional externally insulated wall

the results show that the time lag factor (τ=4-5 h) and attenuation factor (=0.064) of the BIPV/T wall are superior to those of the ordinary wall (τ=2-4 h

=0.151)

indicating better thermal performance. It can significantly improve the thermal comfort of the indoor environment. The internal water content of BIPV/T wall is 6% lower than that of ordinary wall

and it can accelerate the decrease of water content in the wall

keeping the moisture content within BIPV/T walls low. The probability of producing freeze-thaw damage in BIPV/T walls is 61.56% lower than that of ordinary walls

which improves the durability of the building envelope. The air channels of the BIPV/T wall can play a role in cooling down the PV modules

whose photovoltaic conversion efficiency is consistently above 18%.

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