TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Becker, Manfred
A1  - Fend, Thomas
T1  - Theoretical and numerical investigation of flow stability in porous materials applied as volumetric solar receivers / M. Becker ; T. Fend ; B. Hoffschmidt ...
JF  - Solar energy. 80 (2006), H. 10
Y1  - 2006
SN  - 0038-092X
N1  - Solar Power and Chemical Energy Systems (SolarPACES’04)
SP  - 1241
EP  - 1248
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Kuhlmann, Wolfram
A1  - Bettzieche, Volker
T1  - Baudynamische Untersuchung von Talsperren
JF  - Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik. Beilage: D-A-CH-Mitteilungsblatt
Y1  - 2005
SN  - 0005-6650 (Print) ; 1436-4867 (E-Journal) ; 1434-6591 (Beilage)
VL  - Band 80
IS  - Nr. 3
SP  - S2
EP  - S6
ER  - 
TY  - JOUR
A1  - Edip, Kemal
A1  - Sesov, V.latko
A1  - Butenweg, Christoph
A1  - Bojadjieva, Julijana
T1  - Development of coupled numerical model for simulation of multiphase soil
JF  - Computers and Geotechnics
N2  - In this paper, a coupled multiphase model considering both non-linearities of water retention curves and solid state modeling is proposed. The solid displacements and the pressures of both water and air phases are unknowns of the proposed model. The finite element method is used to solve the governing differential equations. The proposed method is demonstrated through simulation of seepage test and partially consolidation problem. Then, implementation of the model is done by using hypoplasticity for the solid phase and analyzing the fully saturated triaxial experiments. In integration of the constitutive law error controlling is improved and comparisons done accordingly. In this work, the advantages and limitations of the numerical model are discussed.
Y1  - 2018
U6  - https://doi.org/10.1016/j.compgeo.2017.08.016
SN  - 0266-352X
VL  - 96
SP  - 118
EP  - 131
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Cheilytko, Andrii
A1  - Alexopoulos, Spiros
A1  - Pozhuyev, Andriy
A1  - Kaufhold, Oliver
T1  - An analytical approach to power optimization of concentrating solar power plants with thermal storage
JF  - Solar
N2  - This paper deals with the problem of determining the optimal capacity of concentrated solar power (CSP) plants, especially in the context of hybrid solar power plants. This work presents an innovative analytical approach to optimizing the capacity of concentrated solar plants. The proposed method is based on the use of additional non-dimensional parameters, in particular, the design factor and the solar multiple factor. This paper presents a mathematical optimization model that focuses on the capacity of concentrated solar power plants where thermal storage plays a key role in the energy source. The analytical approach provides a more complete understanding of the design process for hybrid power plants. In addition, the use of additional factors and the combination of the proposed method with existing numerical methods allows for more refined optimization, which allows for the more accurate selection of the capacity for specific geographical conditions. Importantly, the proposed method significantly increases the speed of computation compared to that of traditional numerical methods. Finally, the authors present the results of the analysis of the proposed system of equations for calculating the levelized cost of electricity (LCOE) for hybrid solar power plants. The nonlinearity of the LCOE on the main calculation parameters is shown
KW  - analytical approach
KW  - optimization model
KW  - solar multiple factor
KW  - design factor
KW  - hybrid solar power plants
KW  - thermal storage
KW  - concentrated solar power
Y1  - 2024
U6  - https://doi.org/10.3390/solar4030024
SN  - 2673-9941
VL  - 4
IS  - 3
SP  - 509
EP  - 525
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Buck, Reiner
A1  - Fend, Thomas
A1  - Pitz-Paal, Robert
A1  - Rietbrock, P.
T1  - Porous materials as volumetric solar receivers : experimental approach towards a detailed characterisation of instability problems / R. Buck ; T. Fend ; B. Hoffschmidt ...
JF  - Forschungsbericht : DLR FB. 10 (2001)
Y1  - 2001
SN  - 0939-2963
N1  - 2. ISSN: 1434-8454 ; Kölner Sonnenkolloquium <5, 2001, Köln> ; Solar thermal power plants and solar chemical processes : advances and perspectives for international cooperation
SP  - 71
EP  - 72
ER  -