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Annual performance ...
Annual performance improvement for solar steam turbines through the use of temperature-maintaining modifications
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- Spelling, James, 1987- (författare)
- KTH,Kraft- och värmeteknologi,Concentrated Solar Power
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- Jöcker, Markus (författare)
- Siemens Industrial Turbomachinery AB, Finspång, Sweden
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- Martin, Andrew (författare)
- KTH,Kraft- och värmeteknologi,Polygeneration Systems
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- Engelska.
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Ingår i: Solar Energy. - : Elsevier BV. - 0038-092X .- 1471-1257. ; 86:1, s. 496-504
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Steam turbines in solar thermal power plants experience a much greater number of starts than those operating in base-load plants. By maintaining higher internal temperature during idle periods, faster start-up times can be achieved, increasing the flexibility of the plant as well as increasing net electrical production. Prior work by the authors identified a number of methods for achieving this, with strong increases in daily production predicted; only two specific start-up cases were studied however. In order to obtain a more representative evaluation of the performance increase that can be achieved through increased dispatchability of the turbine, the annual improvement needs to be studied. Building on the existing results, a dynamic system model of a parabolic trough power plant has been established and used to determine the distribution of different cool-down times experienced throughout the year, with a view to evaluating the potential annual production increase. A modification of the start-up curves allows an increase in annual electrical production between 6.4% and 2.4% depending upon the operating mode (free operation versus day-time operation). Through application of a combination of heat blankets and an increase in gland steam temperature, further annual production increases between 2.2% and 3.1% are predicted.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Solar thermal power
- Steam turbine
- Dispatchability
- Start-up
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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