Efficiency Improvement of Photovoltaic Panels by Using Air Cooled Heat Sinks

Popovici, Cătălin George; Hudișteanu, Sebastian Valeriu; Mateescu, Theodor; Cherecheş, Nelu-Cristian

doi:10.1016/j.egypro.2015.12.223

Cited by 221 publications

(104 citation statements)

References 6 publications

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“…One 37 reason which has been noticed for significantly influencing practical solar PV efficiency is working 38 temperature, or solar panel surface temperature [3][4][5][6]. Some research has revealed that an increase 39 in solar cell temperature of around 1 °C leads to a decrease in efficiency of about 0.45% [7,8].…”

mentioning

confidence: 99%

Cooled solar PV panels for output energy efficiency optimisation

Peng

Herfatmanesh

Liu

2017

Energy Conversion and Management

117

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confidence: 99%

Cooled solar PV panels for output energy efficiency optimisation

Peng

Herfatmanesh

Liu

2017

Energy Conversion and Management

117

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“…K in the median channel. The analysis of the cooling impact over the integrated photovoltaic panels is based on the temperature effect over their efficiency [17]. A typical efficiency of the photovoltaic effect of 16 % is considered, for solar radiation of 1000 W/m 2 .…”

Section: Resultsmentioning

confidence: 99%

Wind tunnel study of natural ventilation of building integrated photovoltaics double skin façade

Hudișteanu

Popovici

2018

E3S Web Conf.

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The paper presents a wind tunnel experimental analysis of a small-scale building model (1:30). The objective of the study is to determine the wind influence on the ventilation of a double skin façade channel (DSF) and the cooling effect over integrated photovoltaic panels. The tests were achieved by conceiving and implementation of an experimental program using a wind tunnel with atmospheric boundary layer. The effect of the wind over the ventilation of the horizontal channels of double skin façades is evaluated for different incident velocities. The results are generalized for the average steady state values of the velocities analysed. The experimental results put in evidence the correlation between the reference wind velocity and the dynamics of the air movement inside the double skin façade. These values are used to determine the convective heat transfer and the cooling effect of the air streams inside the channel upon the integrated photovoltaic panels. The decrease of the photovoltaic panels temperature determines a raise of 11% in efficiency and power generated.

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“…The efficiency of PV cell at the market is range from 12 to 17% and the portion of 3 to 10% of solar radiation is reflected by glass [9,10]. Thus for this study assume that the total of 20% of solar energy is converted into electrical energy and back to surrounding.…”

Section: Problem Descriptionmentioning

confidence: 99%

Numerical approach of Al₂O₃-water nanofluid in photovoltaic cooling system using mixture multiphase model

Sutanto

Indartono

2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract.This article aims to numerically analyze the cooling system of photovoltaic device using mixture multiphase model. Aluminum oxide (Al2O3)-water nanofluids at various concentration of 0, 0.5, 1 and 2 vol.% were used as cooling fluid for photovoltaic module. The constant and uniform heat flux of 800 W/m 2 was applied on photovoltaic (PV) module and the various cooling fluids flowed under PV module at Reynold number of 200 and 500. The temperature distribution and local heat transfer coefficient of cooling fluid were observed. The results show that increasing concentration of Al2O3 nanoparticle enhances the local heat transfer coefficient and decreases the temperature of PV cell. The significant enhancement of convection heat transfer of Al2O3-water nanofluid occur at entrance region. The operating temperature of PV cell can be decreased till 303 K for 2 vol.% Al2O3-water nanofluid at Reynold number of 500. IntroductionSolar energy is one of the most abundant renewable energy resources. The electrical devices which convert solar energy into electrical energy via photovoltaic mechanism such as silicon have been developed to gain maximum performance. One of the main factor that can decrease the efficiency of photovoltaic cells is temperature [1]. Moreover, the effect of temperature in photovoltaic devices also decrease the life time and stability of PV system. The cooling mechanism is one of the solution which is applied by researcher to decrease the operating temperature of PV panels. The various types of fluids which can be used as PV cooling system are air, water, ethylene glycol and nanofluid.Nanofluid is a fluid which dispersed nanomaterials with size typically of 1 to 100 nm. The use of nanomaterials have attracted the interest for many applications such as semiconductor, solar cells, nanofluid, sensor, and etc [2][3][4][5]. The dispersion process of nanoparticle will enhance thermal conductivity and specific heat of fluid [6]. The addition of Al2O3 nanoparticles into water have been reported to increase the performance of convection heat transfer [6]. The heat transfer characteristic of nanofluid had been successfully investigated by single-phase and multi-phase model [7,8]. However, the multi-phase model produce heat transfer prediction which is more accurate than the single-phase model, because the disorder movement of nanoparticle and its interaction with base fluid also considered. Movareji, et al [8] showed that Al2O3-water nanofluid under heat flux constant in the discrete phase model had enhancement in heat transfer coefficient and a good agreement with experimental results. Thus, this work will investigate the numerical investigation of Al2O3-water nanofluid as cooling fluid for photovoltaic cells by using two-phase mixture model approach. The

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Efficiency Improvement of Photovoltaic Panels by Using Air Cooled Heat Sinks

Cited by 221 publications

References 6 publications

Cooled solar PV panels for output energy efficiency optimisation

Cooled solar PV panels for output energy efficiency optimisation

Wind tunnel study of natural ventilation of building integrated photovoltaics double skin façade

Numerical approach of Al₂O₃-water nanofluid in photovoltaic cooling system using mixture multiphase model

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Efficiency Improvement of Photovoltaic Panels by Using Air Cooled Heat Sinks

Cited by 221 publications

References 6 publications

Cooled solar PV panels for output energy efficiency optimisation

Cooled solar PV panels for output energy efficiency optimisation

Wind tunnel study of natural ventilation of building integrated photovoltaics double skin façade

Numerical approach of Al2O3-water nanofluid in photovoltaic cooling system using mixture multiphase model

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Numerical approach of Al₂O₃-water nanofluid in photovoltaic cooling system using mixture multiphase model