TY  - JOUR
A1  - Alebouyeh Samami, Behzad
A1  - Pieper, Martin
A1  - Breitbach, Gerd
A1  - Hodapp, Josef
T1  - Heat production in the windings of the stators of electric machines under stationary condition
JF  - Heat and mass transfer
N2  - In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results.
Y1  - 2014
U6  - http://dx.doi.org/10.1007/s00231-014-1371-8
SN  - 0947-7411 (Print) ; 1432-1181 (E-Journal)
VL  - 50
SP  - 1707
EP  - 1716
PB  - Springer
CY  - Heidelberg
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  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Optimization of the geometry of porous SiC ceramic filtering modules using numerical methods
JF  - Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society
Y1  - 2008
SN  - 9780470196403
N1  - Ceramic engineering and science proceedings ; 28,9
SP  - 95
EP  - 104
PB  - Wiley
CY  - Hoboken, NJ
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Solar tower power plant in Germany and future perspectives of the development of the technology in Greece and Cyprus
JF  - Renewable Energy . 35 (2010), H. 7
Y1  - 2010
SN  - 0960-1481
SP  - 1352
EP  - 1356
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Solarthermische Kraftwerke mit thermischen Speichern
JF  - Chemie Ingenieur Technik. 82 (2010), H. 9
Y1  - 2010
SN  - 1522-2640
N1  - Special Issue: ProcessNet-Jahrestagung 2010 und 28. Jahrestagung der Biotechnologen V9.01 [Abstract des Vortrags]
SP  - 1606
EP  - 1606
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - http://dx.doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Altay, Okyay
A1  - Butenweg, Christoph
A1  - Taddei, Francesca
T1  - Effektivität von Schwingungsdämpfern bei Windenergieanlagen
JF  - Bauingenieur : die richtungsweisende Zeitschrift im Bauingenieurswesen ; offizielle Zeitschrift der VDI-Gesellschaft Bautechnik. Beilage: D-A-CH-Mitteilungsblatt
Y1  - 2013
SN  - 1436-4867 (E-Journal); 0005-6650 (Print)
N1  - Printausgabe in der Bibliothek Bayernallee vorhanden: 13 Z 049-2013
VL  - Band 88
IS  - Heft 10
SP  - S11
EP  - S17
PB  - VDI Fachmedien
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Arpshofen, Ingo
A1  - Gerling, Ulrich
A1  - Sommer, Ferdinand
A1  - Schultheiss, Emil
A1  - Predel, Bruno
A1  - Pool, M. J.
T1  - Experimentelle Bestimmung der integralen Mischungsenthalpien in den binären Systemen Pd-Cu und Si-Cu bei 1600 K
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 72, H. 12
Y1  - 1981
SN  - 0044-3093 ; 0179-4841
SP  - 842
EP  - 846
ER  - 
TY  - JOUR
A1  - Arpshofen, Ingo
A1  - Gerling, Ulrich
A1  - Sommer, Ferdinand
A1  - Schultheiss, Emil
A1  - Predel, Bruno
A1  - Pool, M. J.
T1  - Bestimmung der Mischungsenthalpien im System Palladium-Silicium bei 1600 K
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 72, H. 11
Y1  - 1981
SN  - 0044-3093 ; 0179-4841
SP  - 776
EP  - 781
ER  - 
TY  - JOUR
A1  - Arpshofen, Ingo
A1  - Pool, M. J.
A1  - Sommer, Ferdinand
A1  - Gerling, Ulrich
A1  - Predel, Bruno
A1  - Schultheiss, Emil
T1  - Determination of the integral mixing enthalpies in the Cu-Pd-Si liquid ternary alloy system at 1600 K
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 1
Y1  - 1983
SN  - 0044-3093 ; 0179-4841
SP  - 25
EP  - 32
ER  -