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Steam temperature stability in a direct steam generation solar power Plant

Birnbaum, Jürgen and Feldhoff, Jan Fabian and Fichtner, Markus and Hirsch, Tobias and Jöcker, Markus and Pitz-Paal, Robert and Zimmermann, Gerhard (2010) Steam temperature stability in a direct steam generation solar power Plant. Solar Energy, CSP Highlights 2009. Elsevier B.V.. DOI: 10.1016/j.solener.2010.10.005. (In Press)

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Direct steam generation (DSG) is one alternative to the current oil-based parabolic trough solar thermal power plants. Within the German research project ITES, the dynamic behavior of a DSG collector field and the interactions with the conventional power block are assessed in detail. A transient solar field model developed by DLR is used to simulate the steam temperature behavior. Artificial irradiance disturbances as well as real irradiance data are used as input to the system. The resulting main steam temperature gradients are then analyzed by Siemens considering the standards for steam turbines. This paper presents the transient simulation results of the steam temperature as well as the corresponding results of the steam turbine analysis. It is found that the occurring temperature gradients are challenging for a safe turbine operation, if a conservative control system is used. Therefore, the use of an additional thermal inertia to stabilize the steam temperature is suggested. Its impact is also analyzed and discussed in this paper.

Document Type:Article
Title:Steam temperature stability in a direct steam generation solar power Plant
AuthorsInstitution or Email of Authors
Birnbaum, JürgenSiemens
Feldhoff, Jan Fabianjan.feldhoff@dlr.de
Fichtner, MarkusSiemens
Hirsch, Tobiastobias.hirsch@dlr.de
Jöcker, MarkusSiemens
Pitz-Paal, Robertrobert.pitz-paal@dlr.de
Zimmermann, GerhardSiemens
Journal or Publication Title:Solar Energy
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Volume:CSP Highlights 2009
Publisher:Elsevier B.V.
Status:In Press
Keywords:solar thermal power plant, parabolic trough, direct steam generation, transient simulation, steam turbine
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Applikationsentwicklung (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Thermodynamics > Solar Research
Deposited By: Jan Fabian Feldhoff
Deposited On:26 Oct 2010 13:58
Last Modified:07 Feb 2013 20:43

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