Thermal and electrical management of photovoltaic panels using phase change materials – A review

Waqas, Adeel; Ji, Jie; Xu, Limei; Ali, Majid; Zeashan,; Alvi, Jahan Zeb

doi:10.1016/j.rser.2018.04.091

Cited by 102 publications

(21 citation statements)

References 50 publications

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“…A phase change material (PCM) employs the latent heat of the material as thermal storage with the benefit of greater storage density and “pinning” of the solar panel operating temperature. This is a potentially promising technology, to manage heat absorption or its release across a phase change in the material within a narrow temperature range (Waqas et al., 2018). The criteria of PCM selection depends on its melting point in the desired operating range to provide suitable heat exchange surface (Dutt Sharma et al., 2004).…”

Section: Introductionmentioning

confidence: 99%

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Tangsiriratana

Skolpap

Patterson

et al. 2019

Heliyon

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In this study, a micro-encapsulated phase change material (PCM) was composed of sugarcane wax−Al 2 O 3 composite as the core material and gelatin−gum Arabic as the polymer shell materials prepared by complex coacervation. The thermal behavior of solar panels integrated with this encapsulated PCM (EPCM) was investigated. The heat storage-dissipation performance and thermal stability of the sugarcane wax−based composite PCM layer with the heat capacity of 2.86 J/g·°C was influenced by its thickness. Increasing the composite PCM layer thickness from 4 mm to 7 mm could lower the module's front-facing glass temperature by 4% resulting in enhanced the photovoltaic power generation by 12% at the peak, because of the temperature storage ability of the composite PCM. Moreover, the thermal conductivity of the microencapsulated sugarcane wax was calculated using a steady-state one-dimensional energy balance equation. The thermal conductivities estimated across the composite PCM layer depth were found to be temperature dependent. A nonlinear regression of the power law thermal conductivity model gave a good agreement with the observed EPCM-surface temperatures.

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Section: Introductionmentioning

confidence: 99%

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Tangsiriratana

Skolpap

Patterson

et al. 2019

Heliyon

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“…In engineering applications, it is necessary to utilize isothermal or near isothermal phase transition properties of phase change materials (PCMs); in solar energy heat utilization, industrial waste heat recovery, building energy conservation, electronic components cooling, and different PCMs are required to meet different requirements . Waqas et al reviewed the economic viability of PV‐PCM systems and concluded that overall payback period of the PV‐PCM system is 12 to 15 years, and the payback period can be reduced by enhancing the benefits by collecting the absorbed heat from PCM and utilizing it for further applications. In practical application, the following requirements are put forward for PCMs: phase change temperature within the practical operating range, high latent heat storage, stable chemical and thermodynamic properties, nontoxic, environmentally friendly, low‐cost and easy to obtain, small volume change during phase change, no undercooling .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of urea/ammonia bromide composite phase change material

Liu

Zhang

et al. 2020

Int J Energy Res

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Summary In order to find phase change materials that can be better applied in the field of solar collectors, the phase change heat storage properties of urea (U) and ammonium bromide (AB) were studied. The eutectic ratio of UAB was found by the Edison method, and different additives were added to UAB by dipping and mixing. The structure and property of the composites were characterized by X‐ray powder diffraction (XRD), scanning electron microscope (SEM), differential scanning calorimetry (DSC), and TG/TGA, respectively. The results showed that the eutectic ratio of UAB was 6:3; it was weakly acidic after melting not layered. When 6‐wt% EG and 1‐wt% nanometer titanium dioxide (TiO2) were added, the thermal conductivity of the material increased by 3.62 times; the thermal diffusivity was increased by 6.77 times. When the mass fraction of EG is between 1% and 6%, the larger the mass fraction of EG, the greater the thermal conductivity of the material. After 1000 cycles, the composite material performance was stable; at the same time, the used materials can be used as fertilizers to solve the problem of material pollution, which indicated that the prepared UAB/TiO2/EG composite PCMs had great application prospect in the field of solar collectors.

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“…Phase Change Materials (PCM) of high latent heat capacity were studied and reviewed by Waqas A. et al [7]. They observed that using PCMs as a cooling agent for solar panels can reduce the temperature up to 20 ̊ C -depending on the meteorological conditions-which can lead to efficiency increase up to 5%.…”

Section: Introductionmentioning

confidence: 99%

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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Thermal and electrical management of photovoltaic panels using phase change materials – A review

Cited by 102 publications

References 50 publications

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Thermal properties and behavior of microencapsulated sugarcane wax phase change material

Preparation and characterization of urea/ammonia bromide composite phase change material

Hydrogels beads for cooling solar panels: Experimental study

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