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Solar energy generating

Clicks:Updated:2011-04-05 18:04:17【Print】【Close】

Solar energy generating

The current solar energy generating can be classified with gathering method of solar energy:
1. groove-type generating electricity
2. Tower-type generating electricity
3. plate-type heat-generating electricity

The advantages of solar energy resource
1、Huge amount: the solar radiant energy reach to the earth is about 130000 billion tons of standard coal in every year and the total amount is the largest developmental energy in the world.
2、Long time: The amount of hydrogen from sun can keep more than ten billion years and the life of earth is only about several billion years. It means the solar energy will be endless.
3、Easy gathering :  The solar radiant energy is easy to get, which not need to mine and also not need to transport. We can find and get this resource anywhere and it is very easy to develop and use.
4、Clean and safe: Solar energy also was called “clean energy” and “safe energy, it is without any pollution and cleaner than conventional energy resource; it is much safer than nuclear energy.

The fundamental of solar energy generating

The solar energy generating is mainly through reflex sunlight to heat-gathering equipment by means of mirror plane condenser then heat the water into steam through the heat-carrier in the equipment and drive the turbine to generate electricity. The system is green, environmental protection and without any pollutions, low production cost and easy to realize the production of  standardization and industrialization.  

The current solar energy generating can be classified with gathering method of solar energy

groove-type thermal power generation with solar energy

groove-type thermal power generation system of Solar energy is the maturest and widest CSP technology that currently used , which consists of heat-gathering field that comprised of several hundreds rows of parabolic cylinder groove-type reflectors and a conventional steam turbine generating electricity system. This technology adopted parabolic cylinder groove-type reflector to focus the sunlight on the tubular receiver then heat the working medium of heat transfer into steam and drive the conventional steam turbine to generate electricity.  

Tower-type thermal power generation with solar energy

Tower-type thermal power generation system of solar energy adopted many heliostats to reflect the sun thermal radiation to the heat collector (sun boiler) located on the top of tower then heat the working medium to exchange the heat with water and producing steam or directly heat the water in the heat collector into steam and drive the steam turbine to generate electricity. This system consists of several thousands of plane mirrors( also was called heliostat) with double-shaft sun-tracking system and a or several central heat-collecting towers. 
plate-type thermal power generation with solar energy

plate-type thermal power generation system adopted curved surface condensation light reflector to focus the incidence sunlight on the focal point and directly placed the Stirling engine on the focal point to generate electricity. The system consists of paraboloid condenser with diameter of 10 meters and energy converting unit (stirling engine plus generator) that installed on the focal point and the whole unit was installed on the supports with double shaft sun-tracking system.


 

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