Abstract
The operating temperature of the photovoltaic module is an important issue because it is directly linked with system efficiency. The objective of this work is to evaluate temperature distribution in the photovoltaic module under different environmental conditions. The results shown that photovoltaic module operating temperature depends not only on the ambient temperature or solar radiation dependent but also depends on wind speed and wind direction. It is presented that the mounting conditions which are not taken into consideration by most of the literature models also play a significant role in heat transfer. Depends on mounting type an increase in module operating temperature in the range 10-15oC was observed which cause further PV system efficiency decrease of about 3.8-6.5 %.
Highlights
Due to the international regulations regarding global warming and increasing CO2 emissions, the electrical energy production has to take into account the environmental aspect
The incident global and diffuse solar radiation at horizontal surface =0o and tilted at =35o and wind speed and ambient temperature are shown in Fig. 3 for selected sunny day 07.06.2018
The operating temperature of the PV module panel is an important issue because it is directly linked with photovoltaic system efficiency
Summary
Due to the international regulations regarding global warming and increasing CO2 emissions, the electrical energy production has to take into account the environmental aspect. One of the widely used renewable energy systems which provide the direct method of converting solar energy into electrical energy is the photovoltaic system. Despite the significant progress that has been already made, the increase in electrical efficiency and the reduction of the production cost are to be still important goals. The performance of the photovoltaic system depends on a large number of factors such as module specifications, mounting scheme, module inclination, solar radiation, wind speed, ambient temperature, pollution or shadowing. The energy conversion efficiency in the photovoltaic module has high depends on the module temperature. The weak cooling mounting, high ambient temperature and high solar irradiation have a negative influence on the module energy conversion efficiency [2]. The photovoltaic cell efficiency designed under Standard Test Conditions STC and varied depending on the cell type
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