Numerical investigation of the effects of the nano-enhanced phase change materials on the thermal and electrical performance of hybrid PV/thermal systems

Abdelrazik, A.S.; Al‐Sulaiman, Fahad A.; Saidur, R.

doi:10.1016/j.enconman.2019.112449

Cited by 95 publications

(30 citation statements)

References 27 publications

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“…For all systems, the module's efficiencies and thermal gains were observed over the course of four sunny days. The observations suggest that using only PCM may lead to insulation of heat and hence a drop in the conversion efficiency of the solar cell, while employing nano enhanced PCM seemed to improve the efficiency, with thermal energy gain of 40 W. The work discussed in the literature is summarized in Table 1, [5][6][7][8][9][10][11]16,20,[25][26][27][28][29][30][31][32][33] which shows the various aspects of PV/T system design and reported system efficiencies.…”

Section: Introductionmentioning

confidence: 93%

“…Other types of nanomaterial have been investigated in the research related to this topic. For instance, Abdelrazik et al 32 studied the influence of integrating nano enhanced PCM on a flat-plate PV/T collector using a numerically validate model, and experimentally tested the system. Graphene nanoplatelets (GNP) were used at different loadings which showed to change the electrical performance of the PV.…”

Section: Introductionmentioning

confidence: 99%

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Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

2021

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Thermal stress causes reduction in the open circuit voltage of photovoltaic (PV) modules which results in a reduction in overall power generation. Photovoltaic thermal (PV/T) collectors have been used to mitigate this issue by providing both cooling of the cell temperature and yielding thermal energy in the same space. However, the implementation of PV/T systems in the industry is still lacking and requires further innovative solutions to achieve higher electrical and thermal efficiencies. In this article, a case study experimental and parametric analysis of a PV/T system with nano-phase change material and nanofluid, as the heat transfer fluid, is presented. The system was tested in Bangi, Malaysia and the findings have been compared with previous studies in the literature. The findings of the evaluation show average and peak overall PV/T efficiencies of 61.6% and 77.8%, respectively. Moreover, the electrical efficiency of the PV and PV/T averaged at 9.9% and 13.1%, respectively. The main reason for the drop in the PV module was its average cell temperature which was around 45.6 C, while the PV/T's average cell temperature reached 39.2 C. Finally, the average thermal efficiency of the PV/T was around 48.5% when the mass flowrate was 0.175 kg/s.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

2021

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“…Abdelrazik et al 28 conducted a numerical and practical study with the use of graphene nanoparticles in a PV/T system cooled with a nanofluid in Dhahran, Saudi Arabia. The numerical simulations of the same system were validated by the experimental operation of the system outdoors.…”

Section: Research Backgroundmentioning

confidence: 99%

A review of photovoltaic thermal systems: Achievements and applications

et al. 2020

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Summary The use of photovoltaics has spread widely, and government agencies have begun adopting plans to deploy plants with large capacities, due to their environmental friendliness, low manufacturing costs, and high productivity. In the sunny countries where this technology should spread, the photovoltaics' energy conversion efficiency decreases due to the high temperature of which the cell's operate at; because a large part of the solar radiation is absorbed by the solar panels as heat, while the smaller part converts it to electricity. From here, the benefit of the shift towards the PV/T technology that works to reduce the photovoltaic modules temperature and improve their electricity produced along with yielded thermal energy which can be utilized in other applications. In this study, a thorough review of many recent research and studies published in the field of PV/T has been carried out. The present study was divided into several sections to clarify and focus on the effect of each technology separately. Researchers used one or more fluids to cool the solar panels, and their research dealt with many of these fluids, starting with air, water, oil, etc. Other researchers have tended to increase the thermal conductivity of liquid cooling fluids by adding many types of nanoparticles with high thermal conductivity. Other researchers have used variable‐phase materials to take advantage of the large storage of the latent heat of these materials. Other researchers have studied improving heat transfer of PCMs by mixing it with nanomaterials with high thermal conductivity. Others have also combined nano‐PCMs and nanofluids together in one system, and they have demonstrated, in theory and practice, that this technique exhibits higher energy collection and utilization than the other types of PV/T. At the conclusion of the study, some critical points are identified that work is still limited and needs more research efforts and studies.

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“…Cooling the PV is very important for improving the system's efficiency. So, Abdelrazik et al [1] compared the performance of two systems, the first one was a hybrid PV -Phase change material (PCM), and the second was PV thermal (PVT) system. He used nanoparticles in the two systems.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Power Conversion of Photovoltaic Systems with Metallic Porous Media and Phase Change Material

Essa

Amer

Mostafa

et al. 2021

The Egyptian International Journal of Engineering Sciences and

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Photovoltaic system is one of the promising electricity generation devices due to its direct solar energy conversion, safe power transmission and practicability. However, its performance is very sensitive to high temperatures. Photovoltaic/Thermal systems were presented for enhancing the electrical efficiency and making use of the lost thermal energy. In this research, a combined usage of Paraffin as a phase change material, and a stainless-steel porous media was used to decrease its temperature and use its thermal energy. Two different systems were used for comparison. One contains Stainless steel wool with paraffin, and the other contains Paraffin without porous media. Three flow rates of 0.3300, 0.330, and 0.3300 L/s were used of water as a heat transfer fluid. It was found that, for all the tested flow rates, the system with a porous metallic media achieved lower surface temperature, higher electrical efficiency, and higher overall efficiency. The temperature of the PV cell decreased by 5 to 25⁰ C. The enhancement achieved was from 10% to 28% in the overall efficiency, and 1% to 4% in the electrical efficiency. This emphasizes the importance of the porous metallic media in enhancing properties of Paraffin as a phase change material when using with the Photovoltaic modules cooling.

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Numerical investigation of the effects of the nano-enhanced phase change materials on the thermal and electrical performance of hybrid PV/thermal systems

Cited by 95 publications

References 27 publications

Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

Nano enhanced fluids and latent heat storage material for photovoltaic modules: A case study and parametric analysis

A review of photovoltaic thermal systems: Achievements and applications

Enhancing the Power Conversion of Photovoltaic Systems with Metallic Porous Media and Phase Change Material

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