1. Steam temperature stability in a direct steam generation solar power Plant
- Author
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Robert Pitz-Paal, Jan Fabian Feldhoff, Markus Fichtner, Gerhard Zimmermann, Markus Jöcker, Jürgen Birnbaum, and Tobias Hirsch
- Subjects
solar thermal power plant ,parabolic trough ,Meteorology ,Renewable Energy, Sustainability and the Environment ,Combined cycle ,Nuclear engineering ,Institut für Solarforschung ,Thermal power station ,food and beverages ,steam turbine ,Steam-electric power station ,direct steam generation ,Turbine ,complex mixtures ,humanities ,law.invention ,Heat recovery steam generator ,law ,Steam turbine ,Parabolic trough ,Environmental science ,General Materials Science ,Feedwater heater ,transient simulation ,steam turbine solar thermal power plant parabolic trough direct steam generation transient simulation - Abstract
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.
- Published
- 2011