A parametric study of characteristics of concentrating PV modules

Gao, Yibing; Huang, Hulin; Su, Yuehong; Riffat, Saffa

doi:10.1093/ijlct/ctq002

Cited by 15 publications

(4 citation statements)

References 2 publications

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“…Heat bases containing comparative outsized smooth plate measurements stand commonly required for heat dissipation in fuel cell tools [8,9]. In the latest practices of solar energy technology, concentrated solar panels also required flat plate dimensions [10,11]. Presently, air convection heat bases used as a feasible way to thermally stabilize electric appliances, mainly addressing the little cost with great consistency [12].…”

Section: Introductionmentioning

confidence: 99%

“…Liquid cooling is thus becoming increasingly popular in improving the thermal efficiency of heat sinks [18,19]. Liquid cooling is therefore, being considered a potential solution for concentrated solar panels and fuel cell stacks [10,11]. Liquids generally have high thermal conductivity and heat capacity than commonly used gaseous mediums, and their utilization can eventually help sustain high heat flux with relatively low-temperature lifts across the heat sink.…”

Section: Introductionmentioning

confidence: 99%

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Design and analysis of liquid cooling plates for different flow channel configurations

et al. 2022

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A number of thermal management devices are used to actuate concentrated electronic appliances in an efficient way. A liquid cooling plate acts as a heat sink enclosed by materialized walls. This work aims to carry out design of liquid cooling plates such that the heat diffused by the electronic equipment is removed while their temperatures levels remain within safe limits. The liquid cooling plates expose ?cold surfaces? to electronic appliances. The performance of a cooling plate is estimated depending upon heat carrying capacity, associated heat transfer rates and concentrated thermal regions on the plate surface. For this study, the design of liquid cooling plate was done with SOLIDWORKS. Pure water was used as a working fluid in test channels. A comparative analysis of flow distribution, temperature contours, pressure drop and pumping power for different channel configurations was carried out with ANSYS. It was observed that a channel configuration is of key importance in liquid cooling plates. The findings from this study are beneficial for the optimum design of cooling systems for high heat flux applications, i.e., in electronic devices, computer processors and automotive engines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and analysis of liquid cooling plates for different flow channel configurations

et al. 2022

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“…Moreover, Mohammad et al (2016) and Xu et al (2014) established that, when a solar cell is exposed to the sun, about 9-12% of the solar radiation is converted into electricity. The rest is absorbed by the solar cell, leading to the growth of its operating temperature and therefore to the reduction of its electrical efficiency about 0.45% per degree Celsius (Davud et al, 2013;Gao et al, 2010;Kalogirou et al, 2006;Latifa et al, 2014;Skoplaki et al, 2009). Furthermore, as the nature is essentially nonlinear, Dongo et al (2014) worked on the effects of a thermal nonlinear series resistance, based on an electrical model of a solar cell.…”

Section: Introductionmentioning

confidence: 99%

Effect of a Thermal Nonlinear Absorption Coefficient on the Dynamics of a Photovoltaic Panel

2020

JETP

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In this article, we propose a theoretical study of the effect of a thermal nonlinear absorption coefficient on the dynamics of a photovoltaic (PV) panel. This coefficient is expressed as a quadratic function of temperature of a PV module known as active zone of a PV panel. Based on the energy balance at each layer of a PV panel, the mathematical expressions of the temperature on each layer are derived. A comparative study of the thermal behavior of a PV panel for a constant and nonlinear coefficient is made, thanks to the numerical investigations carried out in the MATLAB environment. We reveal that, this nonlinear absorption coefficient induces the cooling of a PV panel as a whole, and optimize the electrical efficiency of a PV panel around 2.5%.

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“…Excess heat increases cell temperature, which in turn decreases PV conversion efficiency and can result in permanent cell damage [2]; therefore, effective cooling is imperative for PV cells under high concentration. For densely packed cells, solar concentration above four suns requires heat removal mechanisms beyond just natural convective and radiative cooling at the cell surface [3].…”

Section: Introductionmentioning

confidence: 99%

The impact of cooling on cell temperature and the practical solar concentration limits for photovoltaics

Ho¹,

Mao²,

Greif³

2010

Int. J. Energy Res.

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SUMMARYThe solar concentration limit for densely packed, high-concentrated photovoltaic (HCPV) cells was analyzed for a novel two-phase cooling design. Eight working fluids were examined in the two-phase cooling analysis: R134a, R11, R113, R114, R123, R141b, water, and ammonia. In addition, the study investigated the concentration limit for mass flow rates ranging from 10 À3 to 1 kg s À1 . Results from this analysis showed that the limits neared 2000 suns for the six organic fluids examined, whereas for water and ammonia, the practical concentration limit reached about 4000 and 6000 suns, respectively. It was concluded that water and ammonia exhibited greater limits of concentration because they possess greater values of sensible and latent heats compared with the organic fluids examined. The results using this two-phase cooling design were then compared with computational and experimental reference data from other HCPV studies conducted that used cooling mechanisms, such as impinging jets, liquid immersion, and microchannel cooling. Together, the data was compiled and compared with a simplified, one-dimensional, theoretical model using a generic, hypothetical cooling mechanism for densely packed HCPV cells. The general, practical solar concentration limit was predicted to be approximately 10 000 effective suns for a cooling device with a heat transfer coefficient on the order of 10 6 W m À2 K À1 . At this limit, it was determined that the cells' conductive resistance, rather than the external cooling mechanism, becomes the controlling factor for heat removal.

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A parametric study of characteristics of concentrating PV modules

Cited by 15 publications

References 2 publications

Design and analysis of liquid cooling plates for different flow channel configurations

Design and analysis of liquid cooling plates for different flow channel configurations

Effect of a Thermal Nonlinear Absorption Coefficient on the Dynamics of a Photovoltaic Panel

The impact of cooling on cell temperature and the practical solar concentration limits for photovoltaics

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