Natura Eco Energy Pvt. Ltd.
Parabolic Dish Solar System Parabolic Dish Solar Power System Solar Parabolic Dish
Product Overview  

Parabolic Dish-Stirling plants are a suitable solution for decentralized applications. The main advantage is that this concept does not need water for cooling purposes in the conversion cycle. They are non-dispatch able plants and the production is stopped when clouds pass. Some research is being conducted on advanced storage and hybridization systems. The typical size of a single parabolic dish module is 10kW to 25kW.Parabolic dishes are driven by a Stirling engine. This technology is flexible in size as each dish runs independently from the others.


Parabolic Dish
The largest current installation has a total power of 1,5 MW in Maricopa, Arizona (USA). There is another one of 1 MW in the province of Cuenca in Spain. Some 10 MW projects amounting to 70 MW have been approved under the current feed-in-tariff system in Spain and there will be in operation in 2013.
Direct Solar Radiation and Beam Solar Radiation

Any of the concentrating solar reflectors, like the solar parabolic dish, can use only the direct component of incoming solar Diffuse and Direct Solar Radiation. Direct solar radiation (also called beam radiation) is that portion of the incoming solar radiation that travels from the sun to the surface of the earth in essentially a straight line, without being reflected, deflected, or absorbed and retransmitted by particles or gases in the atmosphere. The other component of terrestrial solar radiation is called diffuse solar radiation. It is the portion of incoming solar radiation that is reflected, deflected, or absorbed and retransmitted by particle or gases in the atmosphere, but still ultimately reaches the earth's surface. As shown in the diagram at the right, direct solar radiation rays are all parallel to each other and thus are focused by the solar parabolic dish reflector onto the stirling engine receiver. The diffuse solar radiation strikes the solar parabolic dish from many different directions and thus is not focused onto the stirling engine receiver.

The solar parabolic dish - stirling engine system is one type of concentrating solar power technology. A concentrating solar plant produces a high fluid temperature which leads to higher efficiency for solar power conversion to electricity. A solar parabolic dish stirling engine system can be small.

Salient Features

- Uses parabolic dish to concentrate solar radiation on a Stirling engine

- Has high net solar to electrical efficiency with low water consumption

- Is highly modular and suitable for both small stand-alone, decentralized off-grid power systems and large grid-connected power systems

- Size: 3 kW to 25 kW per unit

- Several small scale installations in operation; utility-scale installations slated for construction in 2010

- Applications appropriate for both utility-scale projects and stand-alone distributed energy projects
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