Solar Thermal Power Plants with Parabolic-Trough Collectors

Details Solar Thermal Power Plants with Parabolic-Trough Collectors Solar Thermal Power Plants with Parabolic-Trough Collectors

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.567...91z&link_type=abstract

Proceedings of The 4th International Conference on Solar Power from Space - SPS '04, together with The 5th International Confere

Computer Science

Scientific paper

Parabolic-trough collectors (PTC) are solar concentrating devices suitable to work in the 150°C- 400°C temperature range. Power plants based on this type of solar collectors are a very efficient way to produce electricity with solar energy. At present, there are eight commercial solar plants (called SEGS-II, III,.. IX) producing electricity with parabolic-trough collectors and their total output power is 340 MW. Though all SEGS plants currently in operation use thermal oil as a heat transfer fluid between the solar field and the power block, direct steam generation (DSG) in the receiver tubes is a promising option to reduce the cost of electricity produced with parabolic- trough power plants. Most of technical uncertainties associated to the DSG technology were studied and solved in the DISS project and it is expected that this new technology will be commercially available in a short term. In Spain, the Royal Decree No. 436/204 (March 12th , 2004) has defined a premium of 0,18€/kWh for the electricity produced by solar thermal power plants, thus promoting the installation of solar thermal power plants up to a limit of 200 MW. Due to the current legal and financial framework defined in Spain, several projects to install commercial solar power plants with parabolic-trough collectors are currently underway.

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