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首页> 外文期刊>Energy Conversion & Management >Numerical investigation of heat pipe-based photovoltaic-thermoelectric generator (HP-PV/TEG) hybrid system
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Numerical investigation of heat pipe-based photovoltaic-thermoelectric generator (HP-PV/TEG) hybrid system

机译：基于热管的光伏热电发电机（HP-PV / TEG）混合系统的数值研究

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摘要

Photovoltaic (PV) cells are able to absorb about 80% of the solar spectral irradiance, however, certain percentage accounts for electricity conversion depending on the cell technology employed. The remainder energy however, can elevate the silicon junction temperature in the PV encapsulation perilously, resulting in deteriorated performance. Temperature rise at the PV cell level is addressed as one of the most critical issues that can seriously degrade and shortens the life-time of the PV cells, hence thermal management of the PV module during operation is considered essential. Hybrid PV designs which are able to simultaneously generate electrical energy and utilize the waste heat have been proven to be the most promising solution. In this study, theoretical investigation of a hybrid system comprising of thermoelectric generator integration with a heat pipe-based Photovoltaic/Thermal (PV/T) absorber is proposed and evaluated. The system presented incorporates a PV panel for direct electricity generation, a heat pipe for excessive heat absorption from the PV cells and a thermoelectric generator (TEG) performing direct heat-to-electricity conversion. A mathematical model based on the energy balance within the system is developed to evaluate the performance of the hybrid integration and the improvements associated with the thermal management of PV cells. Results are presented in terms of the overall system efficiency compared to a conventional PV panel under identical operating conditions. The integration of TEG modules with PV cells in such way aid improving the performance of the PV cells in addition to utilizing the waste-heat available, leading to enhanced output power. The system presented can be applied in regions with hot-desert climates where electricity is considered of a higher demand than thermal energy. (C) 2016 Elsevier Ltd. All rights reserved.
机译：光伏（PV）电池能够吸收约80％的太阳光谱辐照度，但是取决于所采用的电池技术，某些百分比会导致电能转换。然而，剩余的能量会危险地提高PV封装中的硅结温度，从而导致性能下降。光伏电池级的温升已被视为最严重的问题之一，它会严重降低光伏电池的寿命并缩短其使用寿命，因此，在运行过程中对光伏模块的热管理至关重要。能够同时产生电能并利用废热的混合光伏设计已被证明是最有前途的解决方案。在这项研究中，提出并评估了一个混合系统的理论研究，该系统包括热电发电机与热管式光伏/热吸收器（PV / T）集成在一起。展示的系统包括用于直接发电的PV面板，用于从PV电池吸收过多热量的热管以及执行直接热电转换的热电发电机（TEG）。开发了基于系统内能量平衡的数学模型，以评估混合集成的性能以及与PV电池热管理相关的改进。在相同的操作条件下，与常规的PV面板相比，结果以整体系统效率为单位。以这种方式将TEG模块与PV电池集成在一起，除了利用可用的废热外，还有助于改善PV电池的性能，从而提高输出功率。提出的系统可用于热沙漠地区，在这些地区，电力需求比热能更高。 （C）2016 Elsevier Ltd.保留所有权利。

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