An experimental study on thermal management of concentrated photovoltaic cell using loop heat pipe and heat sink

Anand, S.; Kumar, M. Sandeep; Balasubramanian, Karthik; Krishnan, R. Ajith; Maheswari, L.

doi:10.1002/htj.21504

Cited by 17 publications

(5 citation statements)

References 21 publications

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“…Ref. [38] stated heat pipe heat sink dissipates flux in CPV. Researchers reported that under 25 suns, the heat pipe and heat sink could cool CPV to 37.8 • C and 54.16 • C, respectively.…”

Section: Types and Classification Of Cooling Techniques In Solar Cellsmentioning

confidence: 99%

“…It collects the heat from the PV and dissipates it utilising a convector or heat sink. Several researchers have highlighted that active cooling is more efficient and suitable for high concentrations [19,38,42,43]. However, one of the limitations posed by AC includes temperature non-uniformity.…”

Section: Types and Classification Of Cooling Techniques In Solar Cellsmentioning

confidence: 99%

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Cooling of Concentrated Photovoltaic Cells—A Review and the Perspective of Pulsating Flow Cooling

2023

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This article presents a review to provide up-to-date research findings on concentrated photovoltaic (CPV) cooling, explore the key challenges and opportunities, and discuss the limitations. In addition, it provides a vision of a possible future trend and a glimpse of a promising novel approach to CPV cooling based on pulsating flow, in contrast to existing cooling methods. Non-concentrated photovoltaics (PV) have modest efficiency of up to around 20% because they utilise only a narrow spectrum of solar irradiation for electricity conversion. Therefore, recent advances employed multi-junction PV or CPV to widen the irradiation spectrum for conversion. CPV systems concentrate solar irradiation on the cell’s surface, producing high solar flux and temperature. The efficient cooling of CPV cells is critical to avoid thermal degradation and ensure optimal performance. Studies have shown that pulsating flow can enhance heat transfer in various engineering applications. The advantage of pulsating flow over steady flow is that it can create additional turbulence and mixing in the fluid, resulting in a higher heat transfer coefficient. Simulation results with experimental validation demonstrate the enhancement of this new cooling approach for future CPV systems. The use of pulsating flow in CPV cooling has shown promising results in improving heat transfer and reducing temperature gradients.

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Section: Types and Classification Of Cooling Techniques In Solar Cellsmentioning

confidence: 99%

Section: Types and Classification Of Cooling Techniques In Solar Cellsmentioning

confidence: 99%

Cooling of Concentrated Photovoltaic Cells—A Review and the Perspective of Pulsating Flow Cooling

2023

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“…There are two major cooling techniques of the CPV systems; the first one is the passive cooling, using heat sink, heat pipe, free air and phase change materials, while the active cooling uses flowing fluids (such as water or air) through channels, jet impingement, and mini channel and microchannel cooling methods [7][8][9]. It is worthiest to apply the passive cooling mechanism to dissipate heat and cool the solar cells under a CR less than 10×, as, depending usually on the weather conditions [10][11][12], increasing the convective heat transfer area can easily increase the dissipated heat rate and the solar cell efficiency. On the other hand, for High Concentration Ratios (100× ≤ CR ≤ 1000×) or Ultra-High Concentration Ratios (CR ≥ 1000×), using the active cooling techniques is more efficient to maintain CPV system temperature approximately constant over a long period under a wide range of Concentration Ratios (CR)s. Active cooling has better performance especially under harsh environmental conditions like that of Saudi Arabia [4,13,14].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Single-Layer and Stacked Minichannel-Based Heat Sinks Using Different Truncating Ratios for Cooling High Concentration Photovoltaic Systems

et al. 2022

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The present research aims to discuss and analyze the performance of truncated single-layer and stacked mini-channel-based heat sinks employed for the cooling of a single-cell high concentrating photovoltaic systems. The truncating technique of the fins at the entrance and exit regions from the internal fluid mini channels is opted to reduce the energy, raw material costs and time of the manufacturing process of the mini channels. This proposed solution is constrained by several metrics such as the thermal management and the overall performance of the high concentrating photovoltaic system. In the current research, the use of a truncating ratio of 31% has yielded minimum cell temperature and maximum electrical efficiencies for both single-layer and stacked mini-channel-based heat sinks, while a truncating ratio of 65% has enabled more uniform cell temperature distribution. Moreover, a truncating ratio of 65% has qualified the highest water outlet temperature and the lowest pressure drops relatively compared to the conventional mini-channel-based heat sink configurations. The highest water temperature has reached up to 52.7 ∘C by the stacked mini-channel-based heat sink with a truncating ratio of 65% under a geometrical concentration ratio of 2000× and a mass flow rate of 0.001kgs−1. For both the single-layer and stacked mini-channel-based heat sinks, the use of a truncating ratio of 65% has driven the upper hands to achieve higher ratio of the thermal power to the pumping power (RTP). The maximum RTP values have been recorded by the single-layer mini-channel-based heat sink with a truncating ratio of 65% equal to 23.61 ×106 and 233.06 ×103 at a mass flow rate of 0.008kgs−1 and 0.001kgs−1, respectively, under 2000×.

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“…Cell temperature increases if the waste heat is not removed, therefore the cell voltage/power decreases with an increase in cell temperature. 1,2 The conversion of solar energy into electricity by PV cells has been performed at various efficiency levels ranging from 7% to 40%. The efficiency of PV modules decreases with heating, and PV cells will also experience long-term failure if the temperature reaches a certain limit, so this issue has been addressed and resolved.…”

Section: Introductionmentioning

confidence: 99%

A parametric study of a photovoltaic panel with cylindrical fins under still and moving air conditions in Iraq

2020

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Photovoltaic (PV) panel temperature plays a vital role in the performance of PV panels. When PV temperature increases, the electrical power and efficiency decrease. In the present study, a simple simulated model is derived and implemented for a 70-W finned PV panel and the results are compared with those for a reference (unfinned) PV panel. The effect of various parameters including fin diameter, fin height, ambient temperature, fin coverage-to-area ratio, and solar irradiance level on PV performance are examined. It is concluded that more electrical power is generated under moving air than under still air conditions as solar irradiance increases. The optimum values for fin diameter, fin height, and fin coverage-to-area ratio are 0.005 m, 0.25 m, and 50%, respectively. The maximum simulated power difference between the finned and unfinned PV panels is 5 W under realistic weather conditions. The amount of power generated during the summer season would be about 3.32 kW•h greater than that by the reference PV panel over the same period. The root square percent deviation values between the results of the proposed model and previously published experimental data for panel temperature, electrical power, and electrical efficiency are 3.36%, 5.26%, and 5.48%, respectively.

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An experimental study on thermal management of concentrated photovoltaic cell using loop heat pipe and heat sink

Cited by 17 publications

References 21 publications

Cooling of Concentrated Photovoltaic Cells—A Review and the Perspective of Pulsating Flow Cooling

Cooling of Concentrated Photovoltaic Cells—A Review and the Perspective of Pulsating Flow Cooling

Numerical Study of Single-Layer and Stacked Minichannel-Based Heat Sinks Using Different Truncating Ratios for Cooling High Concentration Photovoltaic Systems

A parametric study of a photovoltaic panel with cylindrical fins under still and moving air conditions in Iraq

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