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An Integrated Solar Combined Cycle (ISCC) is a hybrid technology in which a solar thermal field is integrated within a combined cycle plant. In ISCC plants, solar energy is used as an auxiliary heat supply, supporting the steam cycle, which results in increased generation capacity or a reduction of fossil fuel use.
Cogeneration or combined heat and power (CHP) is the use of a heat engine [1] or power station to generate electricity and useful heat at the same time. Cogeneration is a more efficient use of fuel or heat, because otherwise- wasted heat from electricity generation is put to some productive use.
A similar diagram (ancestry unknown) appears on page 36 of IGCC 101 for Public Utilities Commission of Colorado / Steve Jenkins / URS Corporation / February 12, 2007. Context indicates that this applies to the Polk power station which started up July 1996. There are many other relevant diagrams in that PDF.
Power production is rapidly degraded because 1) radiation is reflected and scattered outside of the small (often less than 1–2 °) acceptance angle of the collection optics, and 2) absorption of specific components of the solar spectrum causes one or more series junctions within the multi-junction cells to under-perform. The short-term ...
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Some larger installations utilize combined cycle generation. Usually this consists of a gas turbine whose exhaust boils water for a steam turbine in a Rankine cycle. The condenser of the steam cycle provides the heat for space heating or an absorptive chiller. Combined cycle plants with cogeneration have the highest known thermal efficiencies ...
Load-following power plants can be hydroelectric power plants, diesel and gas engine power plants, combined cycle gas turbine power plants and steam turbine power plants that run on natural gas or heavy fuel oil, although heavy fuel oil plants make up a very small portion of the energy mix. A relatively efficient model of gas turbine that runs ...
Horizontal axis wind-turbine, combined with a solar panel on a lighting pylon at Weihai, Shandong province, China. Combined use of wind+solar systems results, in many places, in a smoother/cleaner power output since the resources are anti-correlated. Therefore, the combined use of wind and solar systems is crucial for a large-scale grid ...