Photovoltaic modules 'hot effect' of how many years can lead to shorten the life

The light of the photovoltaic power generation is to use semiconductor interface will be born v effect in a technology light energy directly into electrical energy. Mainly by the solar panels ( Components) Of, controller and inverter main components made up of electronic components. Solar

photovoltaic effect of photovoltaic power generation is to use semiconductor interface technology converts light energy into electrical energy. It is mainly composed of solar panels, Module) , controller and inverter. Main part is made up of electronic components. Solar cells in series after encapsulation protects form a large area of solar cells, modules, photovoltaic power generation device is composed of power controller with other parts. Photovoltaic power generation is the main principle of the photoelectric effect of the semiconductor. When photons illuminate metal, its energy can be absorbed by the electrons in a metal completely. Electronic absorption energy is enough big, can overcome the internal force of the metal work, and escape from the metal surface become photoelectron. The silicon atoms has four external electronic. If pure silicon doped with five external electron atoms, such as phosphorous, it becomes a kind of n-type semiconductor. If pure silicon doping has three external electron atoms, such as boron atoms, p-type semiconductors are formed. When the P and N together, contact surface will form a potential difference, become a solar cell. When sunlight to pn junction, an empty hole from polar mobile P to N poles, electrons from N polar moved to P polar, form a current. The photoelectric effect refers to the semiconductor lighting in uneven or between different parts of the combination of semiconductor and metal to produce the phenomenon of electric potential difference. First of all, this is a photon ( Light waves) Into electronic, the process of convert light energy into electrical energy. Second, it is a process of voltage form. Whether it is from the world or from China, conventional energy is very limited. China's primary energy reserves is far lower than the world average, only about 10% of the world's total reserves. Solar energy is inexhaustible, inexhaustible and renewable energy. It has enough cleanliness, absolute security, relative commonality, reliable, long life and free maintenance, sufficient resources and potential of the economy. It plays an important role in long-term energy strategy. Compared with the common thermal power system, solar power generation has the following advantages: ( 1) There is no risk of fatigue; ( 2) Safe and reliable, no noise, no pollution emission, absolutely clean ( No pollution) ； ( 3) Do not accept the restriction of resource distribution, can make use of the advantage of building roof; For example, regions and areas of complex topography without electricity; ( 4) No need for fuel consumption and erection of transmission lines, local power generation and power supply can be realized; ( 5) High quality; 6. Users in emotional easy to accept; All landowners short construction cycle, energy short of time. In the photovoltaic power station operation of the entire life cycle, impossible to avoid large particles of dust, bird droppings, leaves and other parts caused by congestion. Obstruction caused by partial shadow will not only reduce the generating element, also can increase the local temperature of components, led to the hot effect. Hot not only influence the efficiency of the photovoltaic system, will cause permanent damage to pv modules, bring power plant fire hazards. According to statistics, serious hot effect of solar cell components of actual service life of at least 30% lower.