Experimental study for thermal regulation of photovoltaic panels using saturated zeolite with water

Abdallah, Saber Ragab; Saidani-Scott, Hind; Benedi, Jorge

doi:10.1016/j.solener.2019.06.039

Cited by 23 publications

(18 citation statements)

References 25 publications

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“…Previous works such as Abdallah et al. [ 31 ] obtained electrical efficiency improvement of 6.5–7% using a combination of activated alumina, pure water and circular perforation for the cooling. Elbreki et al.…”

Section: Resultsmentioning

confidence: 99%

Effect of dual surface cooling of solar photovoltaic panel on the efficiency of the module: experimental investigation

Agyekum

Praveenkumar

Alwan

et al. 2021

Heliyon

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Solar photovoltaic (PV) energy is one of the most widely used renewable energy options around the world. However, its electrical efficiency drops with increasing PV module temperature, it is therefore necessary to find appropriate ways to improve the performance of the module under high temperature conditions. In this study we evaluated the impact of simultaneous dual surface cooling on the PV module's output performance experimentally. The PV module's rear surface was cooled using cotton wick mesh which absorbs water from a perforated pipe and use capillary action to transfer the water down the surface of the rear side of the module. The perforated pipe is strategically positioned at the upper part of the panel and as a result, water from the tank through the holes in the pipe also spread on the front surface of the panel. The experiment recorded a temperature drop of 23.55 °C. This resulted in about 30.3% improvement in the output power of the panel. The cooled PV module also recorded an average efficiency of 14.36% against 12.83% for the uncooled panel. This represent a difference of 1.53% which is 11.9% improvement in the electrical efficiency of the cooled panel. In effect, the proposed approach had a significant positive effect on the energy yield of the PV system.

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Section: Resultsmentioning

confidence: 99%

Effect of dual surface cooling of solar photovoltaic panel on the efficiency of the module: experimental investigation

Agyekum

Praveenkumar

Alwan

et al. 2021

Heliyon

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show abstract

“…The system overall efficiency was 57.9% with PV panel efficiency of 12.32%. Abdallah, S. R. et al [15] proposed a new thermal regulation technique for commercial solar panels depending on the water desorption phenomena using water absorbent substances.…”

Section: Introductionmentioning

confidence: 99%

“…Worth mentioning that hydrogels were not studied before for thermal regulation applications on engineering scale and this is the main novelty of this study. The system depends mainly on water desorption cooling technique proposed in [15] which includes three main steps. The first step is the heat diffusion through the hydrogel bed beneath the solar panel, the second step is water desorption in form of water vapour that escape carrying the un-wanted heat from the system.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogels beads for cooling solar panels: Experimental study

et al. 2020

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This paper aims to present a new and novel experimental study for the usage of hydrogel beads with different bed configurations as a cooling attachment underneath solar panel. Four different bed configurations were studied using different layers and fins arrangements then compared with the un-cooled system. The best results were obtained using 3 rows of hydrogel beads with fins where the panel temperature dropped by approximately 10 ̊ C below the uncooled panel at 1000 W/m 2 (representing around 14% temperature drop comparing to the panels' initial temperature) leading to an increase in the electricity generation efficiency of 7.2 % compared with the un-cooled system.

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“…Recently, S.R. Abdallah et al used saturated zeolite with water for PV cooling and a 9 • C temperature reduction was achieved [12]. Other techniques were also proposed for cooling PV panels such as thermoelectric cooling [13] and radiative cooling [14].…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic Panels Temperature Regulation Using Evaporative Cooling Principle: Detailed Theoretical and Real Operating Conditions Experimental Approaches

2020

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Solar photovoltaic (PV) applications are gaining a great interest worldwide and dominating the renewable energy sector. However, the solar PV panels’ performance is reduced significantly with the increase in their operating temperature, resulting in a substantial loss of energy production and poor economic scenarios. This research contributes to overcoming the PV performance degradation due to the temperature rise. This work involves experimental and theoretical studies on cooling of PV panels using the evaporative cooling (EC) principle. A new EC design to cool the bottom surface of a PV panel was proposed, fabricated, tested, and modeled. A series of experimentation readings under real conditions showed the effectiveness of the method. A steady state heat and mass transfer model was implemented and compared with the experimental data. Fair agreement between the results of the modelling and experimental work was observed. It was found that the temperature of the PV panel can be decreased by 10 °C and the power improvement achieved was 5%. Moreover, the EC helps to stabilize the panels’ temperature fluctuation, which results in a better regulation of electrical power output and reduces the uncertainty associated with solar PV systems.

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Experimental study for thermal regulation of photovoltaic panels using saturated zeolite with water

Cited by 23 publications

References 25 publications

Effect of dual surface cooling of solar photovoltaic panel on the efficiency of the module: experimental investigation

Effect of dual surface cooling of solar photovoltaic panel on the efficiency of the module: experimental investigation

Hydrogels beads for cooling solar panels: Experimental study

Photovoltaic Panels Temperature Regulation Using Evaporative Cooling Principle: Detailed Theoretical and Real Operating Conditions Experimental Approaches

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