光伏热系统的热管理,提高电气性能

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
Abd Elmotaleb  A. M. A. Elamin
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引用次数: 0

摘要

本文对配备创新冷却系统的光伏系统进行了详细的经济和环境评估。冷却系统的特点是在面板底部安装一个翅片外壳。该外壳设计成三种不同的几何形状,暴露在从其下方战略性放置的镜子反射的太阳辐照下,而其上侧则与太阳能电池板相连。此外,还采用了冷却管道作为辅助冷却方式。这两个冷却区都使用了添加了 MWCNT 纳米颗粒的工作材料,以提高传热性能。研究的主要重点是评估四个关键性能指标:投资回收期、碳信用额度(CC)、二氧化碳减排量(CM)和电力输出。通过详细分析发现,增加 Re(雷诺)数可显著提高系统效率,在最佳条件下,电力输出可能翻倍。结果表明,与其他情况相比,情况 B 是最有效的二氧化碳减排配置,显示出卓越的环境效益。相反,情况 C 在这方面表现最差。值得注意的是,从情况 C 过渡到情况 B,二氧化碳减排效果提高了 2.44%。此外,案例 B 的投资回收期最短,是最经济可行的方案,而案例 C 的投资回收期最长。这项研究的意义在于它采用了创新方法来提高光伏发电技术的可持续性。在冷却介质中使用 MWCNT 纳米颗粒改善了热管理,从而提高了效率和功率输出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Thermal management of photovoltaic thermal (PVT) system for improving electrical performance

Thermal management of photovoltaic thermal (PVT) system for improving electrical performance

This paper provides a detailed economic and environmental assessment photovoltaic (PV) system equipped with an innovative cooling system. The cooling system features a finned enclosure attached to the bottom of the panel. This enclosure, designed in three different geometries, is exposed to solar irradiation reflected from a strategically placed mirror underneath it, while its upper side is connected to the solar panel. Additionally, a cooling duct is employed as a secondary cooling method. Both cooling zones utilize a working material enhanced with MWCNT nanoparticles to improve heat transfer properties. The study’s primary focus is on evaluating four critical performance metrics: payback period, carbon credit (CC), CO2 mitigation (CM), and electrical power output. Through detailed analysis, it was discovered that increasing the Re (Reynolds) number significantly boosts the system’s efficiency, potentially doubling the electrical power output under optimal conditions. The results highlight Case B as the most effective configuration for CO2 mitigation, demonstrating superior environmental benefits compared to the other cases. Conversely, Case C performs the worst in this regard. Notably, transitioning from Case C to Case B results in a 2.44% improvement in CO2 mitigation. Furthermore, Case B also shows the shortest payback period, making it the most economically viable option, whereas Case C has the longest payback period. The significance of this research lies in its innovative approach to enhancing the sustainability of PVT. The use of MWCNT nanoparticles in the cooling mediums improves thermal management, leading to higher efficiency and greater power output.

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来源期刊
CiteScore
8.50
自引率
9.10%
发文量
577
审稿时长
3.8 months
期刊介绍: Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews. The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.
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