TY  - CHAP
A1  - Geimer, Konstantin
A1  - Sauerborn, Markus
A1  - Hoffschmidt, Bernhard
A1  - Schmitz, Mark
A1  - Göttsche, Joachim
T1  - Test facility for absorber specimens of solar tower power plants
T2  - Advances in Science and Technology
N2  - The Solar-Institute Jülich (SIJ) has initiated the construction of the first and only German solar tower power plant and is now involved in the accompanying research. The power plant for experimental and demonstration purposes in the town of Jülich started supplying electric energy in the beginning of 2008. The central receiver plant features as central innovation an open volumetric receiver, consisting of porous ceramic elements that simultaneously absorb the concentrated sunlight and transfer the heat to ambient air passing through the pores so that an average temperature of 680°C is reached. The subsequent steam cycle generates up to 1.5 MWe. A main field of research at the SIJ is the optimization of the absorber structures. To analyze the capability of new absorber specimens a special test facility was developed and set up in the laboratory. A high-performance near-infrared radiator offers for single test samples a variable and repeatable beam with a power of up to 320 kW/m² peak. The temperatures achieved on the absorber surface can reach more than 1000°C. To suck ambient air through the open absorber - like on the tower - it is mounted on a special blower system. An overview about the test facility and some recent results will be presented.
Y1  - 2010
U6  - https://doi.org/10.4028/www.scientific.net/AST.74.266
N1  - 5th Forum on New Materials : CIMTEC 2010, Montecatini Terme, Italy 13-18 June 2010. Part C
VL  - 74
SP  - 266
EP  - 271
PB  - Trans Tech Publications
CY  - Baech
ER  - 
TY  - CHAP
A1  - Hoffschmidt, Bernhard
A1  - Alexopoulos, Spiros
A1  - Göttsche, Joachim
A1  - Sauerborn, Markus
A1  - Kaufhold, O.
T1  - High Concentration Solar Collectors
T2  - Comprehensive Renewable Energy (Second Edition) / Volume 3: Solar Thermal Systems: Components and Applications
N2  - Solar thermal concentrated power is an emerging technology that provides clean electricity for the growing energy market. To the solar thermal concentrated power plant systems belong the parabolic trough, the Fresnel collector, the solar dish, and the central receiver system.

For high-concentration solar collector systems, optical and thermal analysis is essential. There exist a number of measurement techniques and systems for the optical and thermal characterization of the efficiency of solar thermal concentrated systems.

For each system, structure, components, and specific characteristics types are described. The chapter presents additionally an outline for the calculation of system performance and operation and maintenance topics. One main focus is set to the models of components and their construction details as well as different types on the market. In the later part of this article, different criteria for the choice of technology are analyzed in detail.
KW  - Central receiver system
KW  - Concentrated solar collector
KW  - Solar dish
KW  - Solar concentration
Y1  - 2022
SN  - 978-0-12-819734-9
U6  - https://doi.org/10.1016/B978-0-12-819727-1.00058-3
SP  - 198
EP  - 245
PB  - Elsevier
CY  - Amsterdam
ER  -