TY  - JOUR
A1  - Kürten, Sylvia
A1  - Mottaghy, Darius
A1  - Ziegler, Martin
T1  - Design of plane energy geostructures based on laboratory tests and numerical modelling
JF  - Energy and Buildings
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.enbuild.2015.08.039
SN  - 0378-7788
VL  - 107
SP  - 434
EP  - 444
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Hoffstadt, Kevin
A1  - Cheenakula, Dheeraja
A1  - Nikolausz, Marcell
A1  - Krafft, Simone
A1  - Harms, Hauke
A1  - Kuperjans, Isabel
T1  - Design and construction of a new reactor for flexible biomethanation of hydrogen
JF  - Fermentation
N2  - The increasing share of renewable electricity in the grid drives the need for sufficient storage capacity. Especially for seasonal storage, power-to-gas can be a promising approach. Biologically produced methane from hydrogen produced from surplus electricity can be used to substitute natural gas in the existing infrastructure. Current reactor types are not or are poorly optimized for flexible methanation. Therefore, this work proposes a new reactor type with a plug flow reactor (PFR) design. Simulations in COMSOL Multiphysics ® showed promising properties for operation in laminar flow. An experiment was conducted to support the simulation results and to determine the gas fraction of the novel reactor, which was measured to be 29%. Based on these simulations and experimental results, the reactor was constructed as a 14 m long, 50 mm diameter tube with a meandering orientation. Data processing was established, and a step experiment was performed. In addition, a kLa of 1 h−1 was determined. The results revealed that the experimental outcomes of the type of flow and gas fractions are in line with the theoretical simulation. The new design shows promising properties for flexible methanation and will be tested.
KW  - methanation
KW  - plug flow reactor
KW  - bubble column
KW  - bio-methane
KW  - power-to-gas
Y1  - 2023
U6  - http://dx.doi.org/10.3390/fermentation9080774
SN  - 2311-5637
N1  - The article belongs to the Special Issue Fermentation Processes: Modeling, Optimization and Control
VL  - 9
IS  - 8
SP  - 1
EP  - 16
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rose, D.
A1  - Pietsch, U.
A1  - Metzger, T. H.
T1  - Depth resolved investigations of the relaxation behaviour in strained GaInAs/GaAs superlattices using grazing incidence X-ray diffraction / Rose, D. ; Pietsch, U. ; Förster, A. ; Metzger, T. H.
JF  - Nuclear instruments and methods in physics research / Section B, Beam interactions with materials and atoms. 97 (1995), H. 1-4
Y1  - 1995
SN  - 0168-583X
SP  - 333
EP  - 336
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rose, D.
A1  - Pietsch, U.
A1  - Metzger, H.
T1  - Depth resolved investigation of the relaxation behaviour in strained GaInAs/GaAs superlattices / Rose, D. ; Pietsch, U. ; Förster, A. ; Metzger, H....
JF  - Physica B: condensed matter. 198 (1994), H. 1-3
Y1  - 1994
SN  - 0921-4526
SP  - 256
EP  - 258
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Indlekofer, K.M.
A1  - Lüth, H.
T1  - Density-matrix description of a quantum dot system with variable lateral confinement in the single-electron tunneling regime. Indlekofer, K.M.; Förster, A.; Lüth, H.
JF  - Physica B: Condensed Matter. 314 (2002), H. 1-4
Y1  - 2002
SN  - 0921-4526
SP  - 499
EP  - 502
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Schmidt-Plutka, A.
A1  - Schubert, F.
A1  - Nickel, H.
T1  - Deformation behaviour of structures exposed at very high temperatures to cyclic thermal and mechanical loadings
JF  - Structural mechanics in reactor technology : transactions of the 12th International Conference on Structural Mechanics in Reactor Technology, Stuttgart, Germany, 15-20 August 1993 / ed. Karl F. Kussmaul. - Bd. L : Inelastic behaviour of solids and structures
Y1  - 1993
SN  - 0-444-81515-5
N1  - SMiRT <12, 1993, Stuttgart>  ; L08/3
SP  - 203
EP  - 208
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecký, F.
A1  - Kordos, P.
T1  - Deep-level states and electrical properties of GaAs grown at 250 °C / J. Darmo ; F. Dubecký ; P. Kordos ; A. Förster ...
JF  - Materials science and engineering B: Solid&#150; state materials for advanced technology. 28 (1994), H. 1-3
Y1  - 1994
SN  - 0921-5107
SP  - 393
EP  - 396
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Kapadi, A.
A1  - Liu, B. Y. H.
T1  - Data Inversion by Simplex Minimization for the Electrical Aerosol Analyzer
JF  - Aerosol Science and Technology. 1 (1982), H. 1982
Y1  - 1982
SN  - 0278-6826
SP  - 136
EP  - 146
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Verghese, S.
A1  - Zamdmer, N.
A1  - Hu, Qing
T1  - Cryogenic picosecond sampling using fiber-coupled photoconductive switch / S. Verghese ; N. Zamdmer ; Qing Hu ; A. Förster
JF  - Applied physics letters. 70 (1997), H. 20
Y1  - 1997
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 2644
EP  - 2646
ER  - 
TY  - JOUR
A1  - Tillmann, K.
A1  - Förster, Arnold
T1  - Critical dimensions for the formation of interfacial misfit dislocations of In0.6Ga0.4As islands on GaAs(001)
JF  - Thin Solid Films. 368 (2000), H. 1
Y1  - 2000
SN  - 0040-6090
SP  - 93
EP  - 104
ER  - 
TY  - JOUR
A1  - Martin, S. A.
A1  - Berg, G. P. A.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Köhler, M.
A1  - Meißburger, J.
A1  - Osterfeld, F.
A1  - Prasuhn, D.
A1  - Riepe, G.
A1  - Rogge, M.
A1  - Schult, O. W. B.
A1  - Speth, J.
A1  - Turek, P.
A1  - Gaul, G.
A1  - Hagedoorn, H.
A1  - Heide, J. A. van der
A1  - Hinterberger, F.
A1  - Huber, M.
A1  - Jahn, R.
A1  - Mayer-Kuckuk, T.
A1  - Poth, H.
A1  - Paetz gen. Schieck, H.
T1  - COSY - a cooler synchrotron and storage ring
JF  - IEEE transactions on nuclear science. Vol. 32, iss. 5
Y1  - 1985
SN  - 1558-1578 (E-Journal); 0018-9499 (Print)
SP  - 2694
EP  - 2696
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schäpers, T.
A1  - Müller, F.
T1  - Control of ballistic electrons in (AlGa)As/GaAs heterostructures by means of superconducting niobium gate structures / T. Schäpers ; F. Müller ; A. Förster ...
JF  - Surface Science. 305 (1994), H. 1-3
Y1  - 1994
SN  - 0039-6028
N1  - ISSN der E-Ausg.: 0039-6028
SP  - 460
EP  - 464
ER  - 
TY  - JOUR
A1  - Krafft, B.
A1  - Förster, Arnold
A1  - Hart, A. van der
A1  - Schäpers, T.
T1  - Control of Aharonov-Bohm oscillations in a AlGaAs/GaAs ring by asymmetric and symmetric gate biasing
JF  - Physica E: Low-dimensional Systems and Nanostructures. 9 (2001), H. 4
Y1  - 2001
SN  - 1386-9477
SP  - 635
EP  - 641
ER  - 
TY  - JOUR
A1  - Rupp, Matthias
A1  - Handschuh, Nils
A1  - Rieke, Christian
A1  - Kuperjans, Isabel
T1  - Contribution of country-specific electricity mix and charging time to environmental impact of battery electric vehicles: A case study of electric buses in Germany
JF  - Applied Energy
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.apenergy.2019.01.059
SN  - 0306-2619
VL  - 237
SP  - 618
EP  - 634
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Krauß, Nico
A1  - Schättiger, Farina
A1  - Dekorsy, Thomas
T1  - Consistent characterization of semiconductor saturable absorber mirrors with singe-pulse and pump-probe spectroscopy
JF  - Optics Express
Y1  - 2013
U6  - http://dx.doi.org/10.1364/OE.21.006764
SN  - 1094-4087
VL  - 21
IS  - 6
SP  - 6764
EP  - 6776
PB  - Optica
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Krichel, Frank
T1  - Considerations about the lightning protection system of mains independent renewable energy hybrid-systems - practical experiences
JF  - Journal of electrostatics. 60 (2004), H. 2-4
Y1  - 2004
SN  - 0304-3886
N1  - ISSN der E-Ausg.: 0304-3886
SP  - 257
EP  - 263
ER  - 
TY  - JOUR
A1  - Brüssermann, Klaus
A1  - Ashton, P.
A1  - Leicht, R.
A1  - Martens, B.-R.
T1  - Concept of the Konrad repository documentation system for radioactive wastes (DORA) / Ashton, P.; Leicht, R.; Martens, B.-R.; Giller, H. Brüssermann, K.
JF  - Kerntechnik 94 : Jahrestagung, 17.-19. Mai 1994, Stuttgart: Tagungsbericht = Nuclear technology, annual meeting 94 / Veranst.: Kerntechnische Gesellschaft; Deutsches Atomforum
Y1  - 1994
SP  - 294
EP  - 297
PB  - INFORUM Verl.- u. Verwaltungs-Ges.
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Holler, S.
A1  - Butenweg, Christoph
A1  - Noh, S.-Y.
A1  - Meskouris, Konstantin
T1  - Computational model of textile-reinforced concrete structures
JF  - Computers & structures : an international journal
Y1  - 2004
U6  - http://dx.doi.org/10.1016/j.compstruc.2004.03.076
SN  - 1879-2243 (E-Journal); 0045-7949 (Print)
VL  - Volume 82
IS  - Issues 23-26
SP  - 1971
EP  - 1979
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry
JF  - Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2
Y1  - 2008
N1  - Verein Deutscher Ingenieure ; World Filtration Congress ; (10 : ; 2008.04.14-18 : ; Leipzig) ; WFC ; (10 : ; 2008.04.14-18 : ; Leipzig)
SP  - 300
EP  - 304
PB  - Filtech Exhibitions
CY  - Meerbusch
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Fischer, U.
A1  - Gerthsen, D.
T1  - Composition evaluation of InxGa1 – xAs Stranski-Krastanow-island structures by strain state analysis / A. Rosenauer ; U. Fischer ; D. Gerthsen ; A. Förster
JF  - Applied physics letters. 71 (1997), H. 26
Y1  - 1997
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 3868
EP  - 3870
ER  -