Exploring the effect of uniform temperature plates type and characteristics on photovoltaic thermoelectric systems

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-09-30 DOI:10.1016/j.icheatmasstransfer.2025.109741

Song Lv , Tonghui Lu , Enpei Zhou , Jiahao Yang

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引用次数: 0

Abstract

Photovoltaic-Thermal Electricity (PV-TE) systems significantly improve full-spectrum solar energy efficiency, yet their performance is hindered by non-uniform temperature distribution in non-concentrating PV-TE systems. Conventional uniform temperature plates (aluminium and copper) are inadequate for achieving temperature uniformity due to their isotropic thermal conductivity, which can cause heat to dissipate from the PV surface. In this study, a graphene uniform temperature plate (UTP) with a thermal conductivity of 1273 W/(m·K) is innovatively used between PV and TE by combining numerical simulation and experiment, and the uneven temperature distribution in the non-concentrated PV-TE system in the existing study is successfully solved by accurately matching the area of the PV components and optimizing the thickness design. In addition, the introduction of UTP in this study resulted in an average decrease of 10 °C in the operating temperature of the PV module (equivalent to an increase of about 1 % in PV conversion efficiency), an increase of 3 °C in the temperature difference between the hot and cold ends of the TEG (Thermoelectric generator), and a significant increase in the output voltage. The research results provide important theoretical support for the thermal management optimization of PV-TE systems.

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探讨均温板的类型和特性对光伏热电系统的影响

光热发电（PV-TE）系统显著提高了全光谱太阳能的利用效率，但其性能受到非聚光PV-TE系统中温度分布不均匀的影响。传统的均匀温度板（铝和铜）由于其各向同性导热性，可能导致热量从PV表面散失，因此不足以实现温度均匀性。本研究采用数值模拟与实验相结合的方法，创新性地将导热系数为1273 W/（m·K）的石墨烯均温板（UTP）应用于PV与TE之间，通过精确匹配PV组件的面积和优化厚度设计，成功解决了现有研究中非集中PV-TE系统中温度分布不均匀的问题。此外，本研究引入UTP后，光伏组件工作温度平均降低10℃（相当于光伏转换效率提高约1%），TEG（热电发电机）冷热端温差增加3℃，输出电压显著提高。研究结果为PV-TE系统的热管理优化提供了重要的理论支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.