Search: onr:"swepub:oai:DiVA.org:kth-35273" >
Annual performance ...
Annual performance improvement for solar steam turbines through the use of temperature-maintaining modifications
-
- Spelling, James, 1987- (author)
- KTH,Kraft- och värmeteknologi,Concentrated Solar Power
-
- Jöcker, Markus (author)
- Siemens Industrial Turbomachinery AB, Finspång, Sweden
-
- Martin, Andrew (author)
- KTH,Kraft- och värmeteknologi,Polygeneration Systems
-
(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
-
In: Solar Energy. - : Elsevier BV. - 0038-092X .- 1471-1257. ; 86:1, s. 496-504
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- Solar thermal power
- Steam turbine
- Dispatchability
- Start-up
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database