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LTA-CAES low-temperature adiabatic compressed air energy storage

LTA-CAES Niedertemperatur Druckluftspeicherkraftwerke
: Wolf, Daniel; Budt, Marcus; Prümper, H.-J.

Fulltext urn:nbn:de:0011-n-1923277 (719 KByte PDF)
MD5 Fingerprint: 39fba2b3a37ae728545ca27f951787d7
Created on: 10.1.2012

World Council for Renewable Energy -WCRE-; Europäische Vereinigung für Erneuerbare Energien e.V. -EUROSOLAR-, Bonn:
6th International Renewable Energy Storage Conference, IRES 2011. CD-ROM : November 28-30, 2011 Berlin/Germany
Bonn: EUROSOLAR, 2011
13 pp.
International Renewable Energy Storage Conference and Exhibition (IRES) <6, 2011, Berlin>
Internationale Konferenz zur Speicherung Erneuerbarer Energien (IRES) <6, 2011, Berlin>
Conference Paper, Electronic Publication
Fraunhofer UMSICHT Oberhausen ()
Verdichter; Turbomaschine; Druckluftspeicherung

Current Adiabatic Compressed Air Energy Storage (A-CAES) aim at high temperatures in the Thermal Energy Storage (TES). Such high TES temperatures together with high pressures are not easy to handle. In order to avoiding this technical challenge, we developed a Low-temperature Adiabatic Compressed Air Energy Storage (LTA-CAES) plant based on a two-tank non-thermocline TES. We selected and designed multistage radial compressors and expanders with single stages arranged at the ends of several pinion shafts rotating with different- and for the assembled impellers optimal speeds. The proposed LTA- CAES design shows cycle efficiencies in the range of 58 to 67%, slightly lower compared to those envisioned for high temperature A-CAES. However, it can be shown that its fast start-up characte ristics and wide-ranging part load ability overcompensate the lower cycle efficiencies with regard to plant profitability.