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Photovoltaic power generation is by physical action, the solar energy directly into electrical energy directly to the process, does not produce any pollution and noise in the middle. Photovoltaic module is the core component of photovoltaic power generation systems, photovoltaic inverter is to produce direct current into alternating current (ac) devices, also is the important components of power systems.

According to whether the power grid, can be divided into two types of access, off-grid and interconnection. Off-grid belongs to the independent power supply system, from the power supply network; And photovoltaic power grid is the grid application way. Now, grid are the major ways of using photovoltaic (pv) power grid and can be divided into the ground power station and distributed.

Off-grid system consists of photovoltaic module, controller, inverter, battery and so on several parts. Have sunshine power generation, and the electricity is stored in the battery, the output electricity back on.

General large hydropower station on the ground, installed on the ground of large area, direct power grid; General installation and distributed power station in the family or the roof of the industrial and commercial buildings, is relatively small, hooked up to the grid at the same time, also for the building electricity. This two ways, the government subsidy standard is also different.

Q: What is the difference between photovoltaic products and solar energy?: But in general, as many of the world's oil and gas production areas of political and economic instability, many governments are taking active measures to reduce dependence on foreign energy sources. Solar energy provides an attractive power generation program, and will not form a serious dependence on foreign energy. In addition, the increasingly serious environmental problems and fossil fuel power and political reasons of climate change risk formation, prompted the government to implement the aims to reduce carbon dioxide and other greenhouse gas emissions reduction strategy. Solar energy and other renewable energy sources contribute to the solution of these environmental problems.

Q: What are the disadvantages of traditional solar water heater: As a developing product, solar water heater is not perfect. People are skeptical about solar water heaters, solar water heaters can normal water supply, can bring convenience to life?

Q: As a new energy solar energy has attracted more and more attention has been paid more and more practical application at home and abroad, I really want to know what are the solar energy application is very hope that we put forward their own views and even science fiction book that I want to do research on solar solar energy market in the military and political life etc.: Uses as follows:Photothermal utilizationIts basic principle is to collect the solar radiation energy, and convert it into heat energy. At present, the most widely used solar collector, there are 4 types of flat plate collector, vacuum tube collector, ceramic solar collector and focus collector (trough, dish and tower). Usually according to the temperature and the use of the different, and the use of solar thermal light is divided into low temperature (<200 DEG C), the use of medium temperature (200 ~ 800 C) and high temperature utilization (>800 C). At low temperature using mainly solar water heater, solar dryer, solar distiller, solar heating (solar room), solar greenhouse, solar air conditioning system, the temperature is mainly using solar cookers, solar thermal power generation heat collecting device, mainly using high temperature high temperature solar furnace etc..

Q: What is the future of solar power: Residents issued 1 kwh of electricity, the state subsidy of 0.42 yuan; the national standard for the purchase of electricity from the desulfurization of residents with endless self generating electricity, the price is $0.42 per degree. To install and use a set of distributed photovoltaic power generation system with an average of 1 kilowatts of installed cost about 10 thousand yuan, if the 8 kilowatt system daily generating capacity of 30 degrees, 5 degrees every household consumption (no more than a price of 0.52 yuan), about 8 years to recover the investment. In accordance with the same calculation method, 10 kilowatts of distributed photovoltaic power generation device to recover the cost of 9-10 years. Family photovoltaic power plant to recover the cost of an average of between 8-10 years.

Q: How to make better use of solar energy: The history of modern solar energy can be calculated from the 1615 French engineer Solomon de Cox in the world invented the first solar powered engine. The invention relates to a machine for pumping water by using solar energy to heat air to make it work. Between 1615 and 1900, the world has developed a number of solar power devices and other solar devices. Almost all of these power plants by condensing method to collect the sunlight, engine power is not the working fluid is mainly water vapor, the price is expensive, little practical value, for the majority of fans of solar energy manufacturing. Twentieth Century 100 years, the history of the development of solar energy technology can be divided into seven stages.

Q: Now there is no sun, cloudy days can use solar products?: The amount of radiation of solar water heater is the meaning of the sun. The sun did not reach that he cannot.

Q: Home solar heating products can not mature?: Solar power generation, per square meter of power generation in 120W or so, the cost per square meter in 1500 yuan, the greater the area the lower the price2013 PV industry in Europe and the United States antitrust investigation, overcapacity led to the collapse of a large number of photovoltaic industry in Zhejiang, solar prices have fallen. This can be checked at any time onlineRecommended to buy solar water heater price per price in the 150-180 yuan, including in accordance with the material and other costs, buy a good look at whether there is a reliable after-sales

Q: The advantages and disadvantages of solar energy?Want to buy solar energy solar energy what is bad? Know about: 3, placed the location of stress, angle, sunlight time, the surrounding environment is not easy to miscellaneous. Although the outside component is made of toughened glass, but also can not afford to toss the firecrackers. And aroundIf there is debris, easy to cause the "island effect" causes the component to burn oh.

Q: Buy solar water heater mainly look at what?: Such a water tank, not only poor quality, but also may cause damage to the health of consumers with bacteria. Third, insulation layer. The quality and thickness of the insulation layer determine the insulation effect of the water heater. Now on the market most of the solar water heater using polyurethane foam insulation technology, but also the polyurethane material, but also the overall high pressure foam and low pressure foam. Large enterprises using the overall high-pressure foam to ensure the pressure and fullness of foam, a lot of small manufacturers of low pressure foam will be part of the insulation layer of the phenomenon of incomplete.

Q: The steps of making solar technology stubs: Material Science：Black plastic bag, rope.Making method:The black plastic bag filled with water after the bag tied in sunlight (see photo). After a while, the bag of water on the heat, can be used to wash your face, wash your feet.3 material: walnut, stick, rubber mud, small cloth.

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