Numerical study on the performance of a glazed photovoltaic thermal system integrated with phase change material (GPVT/PCM): on the contribution of PCM volumetric fraction and environmental temperature
Publish place: Energy Equipment and Systems، Vol: 10، Issue: 2
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_EES-10-2_004
تاریخ نمایه سازی: 25 مهر 1401
Abstract:
In the present article, performance of a glazed photovoltaic thermal system integrated with phase change materials (GPVT/PCM) is numerically examined based on both energy and exergy viewpoints. The effect of PCM volumetric fraction and environmental temperature on thermal and electrical characteristics of the system is evaluated. A three-dimensional model of the system is simulated transiently in the ANSYS Fluent ۱۸.۲ using pressure-based finite volume method and SIMPLE algorithm selected for coupling pressure and velocity components. Validity of the numerical results is confirmed based on available data. The results indicate that PCM melting is more likely far from the riser tube and absorption of thermal energy be the PCM is mostly effective for filling the PCM container by around ۲/۳ of the volume. Increase of the PCM volumetric fraction reduces the module temperature and enhances the electrical performance of the system in terms of both energy and exergy efficiencies, while it decreases the thermal efficiency. An opposite trend is experienced by increase of the environmental temperature in which the thermal efficiency enhances and the electrical efficiency declines.
Keywords:
Glazed Photovoltaic Thermal System (GPVT) , Phase change material (PCM) , Thermal and Electrical Efficiencies , Volumetric Fraction , Environmental temperature
Authors
Ali Naghdbishi
Department of Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
Mohammad Eftekhari Yazdi
Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Ghasem Akbari
Department of Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
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