Study on the performance of cooling composite materials for liquid-immersed concentrating photovoltaic systems

Zhang, Boyang; Wang, Yiping; Huang, Qunwu; Feng, Jiahe; Cui, Yong; Zhang, Yunhui

doi:10.1016/j.solener.2015.05.012

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Closed-loop passive systems are also characterized by the fact that the heat dissipation rate is beneficially proportional to the cell temperature, but it is a stronger, proportional link. Much like other electronics cooling designs, air is the most common heat transfer fluid [36,37], but water [26,38] and even oils [39][40][41] have been proposed and used. Unlike the electronics cooling industry, heat pipes, which utilize liquid-vapor phase change, have yet to become widespread in PV cooling.…”

Section: Introductionmentioning

confidence: 99%

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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Since it is highly correlated with quality of life, the demand for energy continues to increase as the global population grows and modernizes. Although there has been significant impetus to move away from reliance on fossil fuels for decades (e.g., localized pollution and climate change), solar energy has only recently taken on a non-negligible role in the global production of energy. The photovoltaics (PV) industry has many of the same electronics packaging challenges as the semiconductor industry, because in both cases, high temperatures lead to lowering of the system performance. Also, there are several technologies, which can harvest solar energy solely as heat. Advances in these technologies (e.g., solar selective coatings, design optimizations, and improvement in materials) have also kept the solar thermal market growing in recent years (albeit not nearly as rapidly as PV). This paper presents a review on how heat is managed in solar thermal and PV systems, with a focus on the recent developments for technologies, which can harvest heat to meet global energy demands. It also briefs about possible ways to resolve the challenges or difficulties existing in solar collectors like solar selectivity, thermal stability, etc. As a key enabling technology for reducing radiation heat losses in these devices, the focus of this paper is to discuss the ongoing advances in solar selective coatings and working fluids, which could potentially be used in tandem to filter out or recover the heat that is wasted from PVs. Among the reviewed solar selective coatings, recent advances in selective coating categories like dielectric-metal-dielectric (DMD), multilayered, and cermet-based coatings are considered. In addition, the effects of characteristic changes in glazing, absorber geometry, and solar tracking systems on the performance of solar collectors are also reviewed. A discussion of how these fundamental technological advances could be incorporated with PVs is included as well.

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Section: Introductionmentioning

confidence: 99%

Technological Advances to Maximize Solar Collector Energy Output: A Review

Salvi

Bhalla

Taylor

et al. 2018

Journal of Electronic Packaging

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“…Surface modified with porous coating, nanomaterial coating, particle deposition, and atmospheric pressure plasma are investigated, and indicating surface modification can significantly improve the heat transfer performance . On the basis of former study, with coolant direct‐contact immersion cooling, the substrate surface of solar cells will potentially face with corrosion after a long time immersing under high illuminations. And to the best of our knowledge, few papers reported the effect of surface corrosion on heat dissipation performance.…”

Section: Introductionmentioning

confidence: 99%

New insights for phase-change immersion cooling enhancement of solar cells under high concentration ratios

et al. 2017

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Summary To answer how surface corrosion affects the heat transfer performance of phase‐change immersion cooling solar cells, electrochemical etching was used for substrate surface treatment of simulated dense‐array solar cells in this paper. Morphology, roughness, and wettability of treated surfaces were characterized by scanning electron microscope, atomic force microscope, and spreading area, respectively. A self‐running cooling system was developed to investigate the effect of surface treatment on self‐running characteristics and heat transfer performance under different ethanol inlet temperatures and concentration ratios. The results show that the surface treated for 2 hours owns higher wettability because of the honeycomb‐like porous structure. Lower ethanol flowing velocity obtained under lower ethanol inlet temperature with treated samples. The maximum declined degree in the wall superheating of 21.1% and the maximum enhancement in the heat transfer coefficient of 33.3% are obtained for sample treated for 2 hours because of its higher wettability and porosity structure. The results show that electrochemical etching on substrate surface can improve the phase‐change immersion cooling performance of solar cells.

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