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Simulation Results for a Hybridization Concept of a Small Solar Tower Power Plant

Alexopoulos, Spiros and Hoffschmidt, Bernhardt and Rau, Christoph and Schwarzbözl, Peter (2009) Simulation Results for a Hybridization Concept of a Small Solar Tower Power Plant. In: Proceedings. SolarAPCES 2009, 15.-18. September 2009, Berlin.

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Abstract

To the group of solar thermal power systems belongs the solar tower where a field of two-axis tracking heliostats reflect the sun arrays to the receiver aperture. The solar radiation is concentrated at the receiver surface and concentration ratios up to 1000 can be reached. In the receiver high temperatures are reached which can generate steam for a Rankine cycle or ultimately even high enough temperatures to use the heat in a gas turbine system of a combined cycle power plant. Germany’s first and only solar tower power plant for experimental and demonstration purposes has been erected in the town of Juelich. The central receiver plant, which has been designed with an open volumetric receiver, will supply the grid with a nominal power of 1.5 MWe. A further upgrade to a hybrid system by combining the solar operation with combustion process for natural gas or biogas is taken into account. The advantage of the solar-fossil hybrid power plants, compared to solar-only systems, lies in low additional investment costs due to an adaptable solar share and reduced technical and economical risks. For that reason an advanced software tool library is developed for the modelling of such hybrid power plants. From this library components are used to develop a simulation model for the calculation of a small hybrid power plant. This tool enables the calculation of the energy output of not only individual operating points but also of a whole year. In this paper a simulation model for one hybrid concept with a burner of the solar tower power plant of Juelich is described. The newly developed additions to the model library have been validated with results from another software tool. Different operation strategies for this special hybrid concept and simulation results for parts of the small solar tower power plant are described and discussed.

Document Type:Conference or Workshop Item (Poster)
Title:Simulation Results for a Hybridization Concept of a Small Solar Tower Power Plant
Authors:
AuthorsInstitution or Email of Authors
Alexopoulos, SpirosFH Aachen, SIJ
Hoffschmidt, BernhardtFH Aachen, SIJ
Rau, ChristophFH Aachen, SIJ
Schwarzbözl, PeterDLR, ITT
Date:16 September 2009
Journal or Publication Title:Proceedings
Refereed publication:No
Status:Published
Keywords:Solarturm, Hybridisierung, Luftreceiver
Event Title:SolarAPCES 2009
Event Location:Berlin
Event Type:international Conference
Event Dates:15.-18. September 2009
Organizer:SolarPACES
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: Köln-Porz
Institutes and Institutions:Institute of Engineering Thermodynamics > Solar Research
Deposited By: Peter Schwarzbözl
Deposited On:10 Feb 2010 14:48
Last Modified:11 Nov 2014 14:35

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