An experimental analysis of photovoltaic thermal collector with trapezoidal and plain plates: an energy, exergy, and life cycle assessment

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2025-05-10 DOI:10.1016/j.applthermaleng.2025.126769

Prabhakar Jha , Biplab Das , Rajat Gupta , Niraj Kumar

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引用次数: 0

Abstract

The present study explored the benefits of using the trapezoidal plate as a heat exchanger over the plain plate in a PVT unit (conventional unit). The study compares the performance based on annual energy and exergy generation, key energy matrices, CO₂ mitigation, and corresponding carbon credits. Initially, the airflow rate was optimized from the range of values 0.0039–0.0117 kg/s, identifying 0.0094 kg/s as optimal for the annual performance assessment. Experiments were carried out on the rooftop of the Department of Mechanical Engineering, NIT Silchar, India, from December 2022 to November 2023. Results indicate that the trapezoidal plate-based unit maintains a 2.8 °C lower PV module temperature and a 1.9 °C higher outlet temperature compared to the conventional unit. The exergy destruction rate of the trapezoidal plate unit is 1.89 % and 2.73 % lower than the conventional unit on a typical winter and summer day. Additionally, it generated 8.7 %, 8.4 %, and 1.62 % higher annual overall energy, overall exergy, and net electrical energy than the conventional unit. The energy payback time achieved by the trapezoidal plate unit is 9.5 % (overall energy) and 5.4 % (overall exergy) less than the conventional unit. Additionally, the trapezoidal plate unit mitigates 8.6 % and 8.8 % more CO₂ mitigation annually on an overall energy and exergy basis, respectively.

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梯形平板和平板光伏集热器的实验分析：能量、用能和生命周期评估

本研究探讨了在PVT装置（常规装置）中使用梯形板作为板式换热器的好处。该研究基于年度能源和能源产量、关键能源矩阵、二氧化碳减排和相应的碳信用额对绩效进行了比较。最初，在0.0039-0.0117 kg/s范围内优化气流速率，确定0.0094 kg/s为年度性能评估的最佳气流速率。实验于2022年12月至2023年11月在印度锡尔查尔NIT机械工程系的屋顶上进行。结果表明，与传统组件相比，梯形板组件组件温度降低2.8°C，出口温度升高1.9°C。在典型的冬季和夏季，梯形板机组的火用破坏率分别比常规机组低1.89%和2.73%。此外，它产生的年总能量、总能量和净电能比传统机组高8.7%、8.4%和1.62%。梯形板机组的能量回收期比常规机组低9.5%（总能量），低5.4%（总火用）。此外，在总体能源和能源基础上，梯形板单元每年减少的二氧化碳排放量分别为8.6%和8.8%。

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

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.