They contain a solar field, a steam generator, a Rankine cycle, and a fossil fuel (backup) system. Consequently, most of the construction projects of trade solar power plants are focused on this kind of collectors some parabolic trough power plants are planned to be built in USA, Spain, and Middle East. Solar parabolic trough collectors are efficiently employed for high temperature (300–400☌) without any serious degradation in efficiency. Parabolic trough technology has demonstrated the truth of being the most fully grown and of having minimum expense in solar thermal technology.
The solar resource has been taken into account in several researches as the most extensive resource since the last decades.
It seems that the optimum solution is using renewable energy resources to stop their adverse influences on human life. Nowadays, the global warming and green gas effect are the most important hazards for the Earth’s future. Moreover, 7974 GJ useful thermal energy can be obtained from the solar field and storage system. By implementing a storage system, the total operating time will be increased to 3169 hours (2785 in full-load condition). In the end, the effect of thermal storage tanks has been analyzed to save extra solar heat and use it at nights in hot months. The total operating time of the power plant is about 1726 hours (1248 hours in full-load condition). The varying types of collector dimensions have been investigated then, by selecting autumnal equinox (22 September) at 12:00 PM as the design point, thermal performance of the solar power plant has been featured annually, in all conditions. This paper presents an economic modeling of a solar parabolic trough plant, operating at 25 MWe in Yazd, Iran. A vast area will be economically unreasonable whereas a small area will mainly cause the power plant to operate at the part-load condition. Certainly, the right size of the solar field is the first selection with regard to nominal electrical power. In different areas concerning the amount of solar radiation, their standard size is approximately between 20 and 100 MWe. Nowadays, parabolic trough solar thermal plants are prevalent around the world.
0 kommentar(er)
