TY  - JOUR
A1  - Vennemann, Peter
T1  - Zukunft der Stromspeicherung in Pumpspeicherkraftwerken
T1  - Future of Energy-Storage with Pumped Hydro Power
JF  - Deutsches Ingenieurs-Blatt
N2  - Mit wenigen Ausnahmen wird im elektrischen Versorgungssystem die Pumpspeichertechnik zur Pufferung größerer Abweichungen zwischen momentanem Stromverbrauch und -erzeugung und zur zeitlichen Verschiebung von Lasten eingesetzt. Erste großtechnische Anlagen wurden bereits Ende der zwanziger Jahre des letzten Jahrhunderts in Deutschland gebaut, um die Auslastung thermischer Kraftwerke gleichmäßiger zu ermöglichen. Pumpspeicherwerke bieten sich somit als Referenztechnologie an, mit der sich neue Entwicklungen messen müssen. Ein Überblick.
N2  - Pumped hydro power is the first choice for buffering larger deviations between supply and demand of electricity. In Germany, first plants were build in the late nineteen-twenties. Pumped hydro power can be used as a reference technique for emerging technologies for electricity storage. The article gives an introduction into the pumped hydro power technology.
KW  - Energiewirtschaft
KW  - Energieversorgung
KW  - Wasserkraft
KW  - Pumpspeicher
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-6954
VL  - 2014
IS  - 3
ER  - 
TY  - JOUR
A1  - Lorek, Sylvia
T1  - Veblen’s contribution to the analysis of (un-) sustainable consumption - Overvalued and underestimated
JF  - European Journal of Economic and Social Systems
N2  - Veblen’s concept of conspicuous consumption is often cited to explain why consumption habits in our consumer societies tend to be unsustainable and ever increasing. However, much more than blaming individual consumption habits Veblen sharply analyzed quite some of the societal and economic forces which drive the framework conditions for un-sustainable consumption: the vested interests and the absentee ownership. The paper follows the path Veblen’s thoughts have taken trough economic and social literature over the last centuryand highlights how the actual sustainable consumption debate could make better use of Veblen’s insights e.g. in requesting the constitutive institutions for property. Opportunities for Strong Sustainable Consumption obviously presuppose radical changes, social innovations and thinking out of the box.
KW  - Veblen
KW  - sustainable consumption
KW  - vested interests
KW  - structural change
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-106424
VL  - 26
IS  - 1-2
SP  - 149
EP  - 172
ER  - 
TY  - JOUR
A1  - Lorek, Sylvia
A1  - Spangenberg, Joachim
T1  - Sustainable Consumption within a sustainable economy - beyond green growth and green economies
JF  - Journal of Cleaner Production
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-61544
VL  - 63
SP  - 33
EP  - 44
ER  - 
TY  - JOUR
A1  - Kazasidis, Orestis
A1  - Wittrock, Ulrich
T1  - Interferometric measurement of the temperature coefficient of the refractive index dn/dT and the coefficient of thermal expansion of Pr:YLF laser crystals
JF  - Opt. Expr.
N2  - We report interferometric measurements of the temperature coefficient of the refractive index (dn=dT) and the coefficient of thermal expansion (a) of a praseodymium-doped yttrium lithium fluoride (Pr:YLF) crystal and of a fused silica reference sample. Our phase-resolved interferometric method yields a large number of data points and thus allows a precise measurement and a good error estimation. Furthermore, both dn=dT and a are obtained simultaneously from a single measurement which reduces errors that can occur in separate measurements. Over the temperature range from 20 °C to 80 °C, the value of dn=dT of Pr:YLF decreases from -5.2 x 10-6 /K to -6.2 x 10-6 /K for the ordinary refractive index and from -7.6 x 10-6 /K to -8.6 x 10-6 /K for the extraordinary refractive index. The coefficient of thermal expansion for the a-axis of Pr:YLF increases from 16.4 x 10-6 /K to 17.8 x 10-6 /K over the same temperature range.
KW  - refractive index change
KW  - thermal expansion coefficient
KW  - laser crystal
KW  - praseodymium
KW  - yttrium lithium fluoride
Y1  - 2014
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:836-opus-7720
VL  - 22
SP  - 30683
EP  - 30696
PB  - Optical Society of America
ER  -