نتایج جستجو برای: pv cells cooling
تعداد نتایج: 1456916 فیلتر نتایج به سال:
the increase of cell temperature with increased irradiance is probably the mostsignificant disadvantage of using photovoltaic modules equipped with booster reflectors. the aimof this study is to investigate the possibility of improving the performance of a photovoltaic waterpumping system by using a booster reflector and to keep the temperature of pv panels at a lowlevel by cooling pv panels wi...
صفحات فتوولتائیک بخش کمی از انرژی تابش خورشیدی جذب شده را به انرژی الکتریکی تبدیل می کنند و قسمت اعظم آن را به صورت انرژی حرارتی که باعث بالا رفتن دمای پانل ها می شود تلف می کنند. با افزایش دمای پانل های فتوولتائیک ،راندمان این سیستم ها به طور محسوسی کاهش پیدا می کنند و بنابراین برای بهبود عملکرد این سیستم ها و افزایش راندمان پانل ها باید دمای پانل را تا حد امکان کاهش داد.روش های مختلفی جهت ک...
Solar energy is the highly recognized energy source, capable of fulfilling the world’s future energy demands. The solar photovoltaic technology involves the unmediated transformation of sunlight into electricity. A little fraction is converted into electricity and the remaining gets exhausted as unused heat. This results in an increase in the operating temperature of the PV Panel. The conversio...
The objective of this study was to achieve higher efficiency of a PV system while reducing of the cost of energy generation. Concentration photovoltaics was employed in the present case as it uses low cost reflectors to enhance the efficiency of the PV system and simultaneously reduces the cost of electricity generation. For this purpose a V-trough integrated with the PV system was employed for...
Solar energy is one of the most abundant sources of renewable energy for the future. This solar energy can be extracted by PV system. Many methods for PV installation are carried out, such as roof top PV system, dam top PV system; floating PV, canal top PV system etc. In canal top system, PV panels are placed above the water canal which saves installation area and reduces evaporation loss. The ...
A high-quality encapsulation process is crucial to ensuring the performance and long-term reliability of photovoltaic (PV) modules. In crystalline Si technology-based modules, poly (ethylene-co-vinyl acetate) (EVA) is the most widely used PV encapsulant. Its encapsulation process is usually performed in a flat-bed vacuum bag laminator. In certain types of laminators, cooling press can be applie...
This paper presents a design of solar tracking system driven by 12V or 24V DC motor controlled by a microchip ‘Intelligent Drive unit IBL2403’[1]. The proposed double axis rotation solar tracker ensures the optimization of conversion of solar energy to electrical energy by orientation of ‘titanium-oxide’ PV panels’ [2-6] in accordance to the hemispherical position of the Sun. The hemispheroidal...
This paper discusses the effect of jet impingement of water on a photovoltaic thermal (PVT) collector and compound parabolic concentrators (CPC) on electrical efficiency, thermal efficiency and power production of a PVT system. A prototype of a PVT solar water collector installed with a jet impingement and CPC has been designed, fabricated and experimentally investigated. The efficiency of the ...
The working temperature of the crystalline silicon photovoltaic (PV) module seriously restricts cell efficiency and lifetime. Therefore, it is great significance to investigate cooling effects PV modules. Recently, introducing nanostructures into polymer backsheets obtain direct-cooling due enhanced heat conduction radiation characteristics, has become a new trend for technology. In this paper,...
This paper evaluates a novel receiver design concept that implements photovoltaic (PV) cells on heat shields and bellows shields to capture optical spillage from central receiver and parabolic trough concentrating solar power (CSP) plants, generating electricity from concentrated light that would otherwise be wasted. A combination of conventional silicon and multi-junction concentrating PV (CPV...
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