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The use of solar energy is not very popular, the use of solar power still exists the problem of low cost, high conversion efficiency, but solar cells have been applied in providing energy for the satellite.
Human depend on the energy to survive, including all other forms of renewable energy, geothermal energy resources except), although the total solar energy resources used by the human equivalent of ten thousand times more energy, solar energy density low, and it varies from place to place, due to the circumstances, it is a major problem faced by the development and utilization of solar energy. These characteristics of solar energy will make it
Qingli solar engineering drawing
Qingli solar engineering drawing
The role in the overall integrated energy system is limited.
Solar energy is both primary and renewable energy. It is rich in resources and can be used for free without transportation, without any pollution to the environment. It has created a new form of life for human beings and brought society and mankind into an era of energy conservation and pollution reduction.
The idea of building a solar power station in space was first proposed in 1968, but it was only recently that humans began to put it into action. Japan is one of the pioneers of the project, which is expected to cost $21 billion and generate a gigawatt of electricity for 294,000 homes. Building solar power stations in space, regardless of the climate, can use solar power, which is different from building solar power stations on earth.
Use of field
Its basic principle is to collect the solar radiation energy and use it by the interaction with matter into heat energy. At present, the most commonly used solar energy collection devices mainly include four types of flat-plate collector, vacuum tube collector, ceramic solar collector and focusing collector (slot type, dish type and tower type). Usually according to the temperature and can achieve different purposes of, and divides into the solar-thermal use used at low temperature (< 200 ℃), medium temperature (200 ~ 800 ℃) and high temperature (> 800 ℃). Low temperature by using mainly have the solar water heater, solar dryer, solar stills (the sun), solar heating, solar greenhouse, solar energy air conditioning refrigeration system, such as medium temperature using mainly include solar oven, solar thermal power generation concentrated heating device, etc., use high temperature mainly include high temperature solar cookers and so on.
Power generation using
Qingli new energy future large-scale use of solar energy is used to generate electricity. There are many ways to generate electricity from solar energy. There are two main types that have been used.
1. Light-heat-electric conversion. That is, using the heat energy generated by solar radiation to generate electricity. Solar collectors convert the heat energy they absorb into industrial steam, which drives turbines that generate electricity. The former process is light - heat conversion, and the latter is heat - electricity conversion.
2. Light-electric conversion. The basic principle is to use the photovoltaic effect to convert solar radiation energy directly into electricity.
[material requirements] resistance to ultraviolet radiation, light transmittance does not decrease. The hardened glass assembly can withstand the impact of a hockey puck 25 mm in diameter at a speed of 23 m/s.
[performance requirements for EVA film curing after installation] the transmittance is more than 90%; Crosslinking degree is greater than 65-85%; Peel strength (N/cm), glass/film greater than 30; TPT/ film greater than 15; Temperature resistance, high temperature of 85 ℃ and 40 ℃ low temperature -; On the back of the solar cell, it is resistant to aging, corrosion, ultraviolet radiation and air permeability.
[usage] solar power is widely used for solar street light, solar insecticidal lamp, solar portable system, solar portable power, solar energy application product, communication power supply, solar lamps, solar building, etc.
Solar power is likely to be a major source of electricity by 2050, helped by a collapse in the cost of generating equipment. Solar photovoltaic (PV) systems will generate up to 16 per cent of the world's electricity by 2050, while solar thermal power (STE) from solar power plants will provide 11 per cent, the IEA reported. 
This is a photochemical conversion of water into hydrogen by direct decomposition of solar radiation energy. It includes photosynthesis, photoelectric chemistry, photosensitive chemistry and photodecomposition reaction.
Photochemical conversion is the process of converting chemical energy into chemical energy due to chemical reaction caused by absorbing light radiation. Its basic forms include photosynthesis of plants and the photochemical reaction of storing solar energy by chemical changes of substances.
Plants rely on chlorophyll to convert light energy into chemical energy to achieve their own growth and reproduction. If it can reveal the secret of photochemical transformation, artificial chlorophyll can generate electricity. Solar photochemical conversion is being actively explored and studied.
The process of converting solar energy into biomass is achieved through plant light cooperation. Giant seaweed.
The fuel used
Since June 2011, the eu has been working on the development and production of "solar" fuel, using the high temperature energy provided by the sun's rays and using water and carbon dioxide as raw materials. So far, the r&d team has successfully implemented the laboratory scale for the first time in the world of renewable fuel the whole process of production, its products fully meet the eu's aircraft and automobile fuel standard, don't need to make any adjustment of aircraft and automobile engine changes. 
Research and design of "solar" fuel prototype, mainly consists of two major technical parts: the first part of the use of centralized heat energy, concentration produces the sun's rays of ETH Zurich independent intellectual property rights of metal oxide additives, in the design and development of solar energy in high temperature reactor will water and carbon dioxide into synthesis gas (Syngas), the main composition of the Syngas into hydrogen and carbon monoxide. The second part, according to fischer-tropsch Principe, converts the waste heat of the high temperature syngas into a commercially available "solar" fuel product.