Abstract
<p>An increase in the temperature of the photovoltaic (PV) cells is a significant issue in most PV panels application. About 15–20% of solar radiation is converted to electricity by PV panels, and the rest converts to heat that affects their efficiency. This paper studies the effects of temperature distribution on the PV panel at different solar radiation values, temperatures under different operation conditions in January and July. A 3D model of the PV panel was simulated with ANSYS software, depending on the various values of temperatures and solar radiation values obtained using mathematic equations. The simulation results indicate that PV panel temperature lowered with solar radiation values lower in January, and the temperature was homogeneous on the PV panel surface. An increase in the solar radiation value and temperature in July led causes heating of the PV panel with observed a convergence of the maximum and average temperature of the panel. Thus, the PV panel temperature increase is directly proportional to the solar radiation increase that causes lower performance. Cooling the PV panel by passive or active cooling represents the optimum option to enhance their performance and avoid increasing the PV cells' temperature at temperature increase.</p>
Highlights
Solar energy is the essential branch of renewable energy is used in different applications as an alternative source of conventional systems such as solar electrical generation, solar cooling systems, solar heating, etc. [1]
The PV panel has been simulated under different solar radiation values estimated by mathematical equations and various temperatures
The results indicate that temperature distribution on the PV panels surface was high at the top of the PV panel while the aluminium frame's temperature was lower
Summary
Solar energy is the essential branch of renewable energy is used in different applications as an alternative source of conventional systems such as solar electrical generation, solar cooling systems, solar heating, etc. [1]. Solar energy is the essential branch of renewable energy is used in different applications as an alternative source of conventional systems such as solar electrical generation, solar cooling systems, solar heating, etc. The PV cells convert the sunlight (photons energy) into electrical energy, where about 15 % – 20 % of the sunlight converts to electricity, and the rest converts to heat which influences their performance [2]. Different factors influence the PV panel performance; some are related to the balance of system (subsystems) failure, such as PV inverter [3]. Others are regarding operation conditions, cell cracking problems due to wind or snow pressure, vibrations, and the dust that collects on the PV module, which causes a failure along its operating lifetime during a short lifetime [4]. The PV panels efficiency is significantly affected by the increase in the PV cells temperature that causes cell degradation and shorting of life expected of PV module with dropped output power [5]
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