Details
| Original language | English |
|---|---|
| Pages (from-to) | 11073-11078 |
| Number of pages | 6 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 2010 |
| Issue number | 49 |
| Publication status | Published - 3 Nov 2010 |
| Externally published | Yes |
Abstract
The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one way to recyle CO2 and lower the global CO2 emissions. Energetic analysis reveals that exergy losses are most severe in the parts of the system when electrical energy is converted to chemical (electrolysis) and when chemical energy is converted to electrical (power generation). In methanol production, the exergetic efficiency is 83.1%, when the chemical exergy of hydrogen and methanol, the exergy of the power input and the released heat are taken into consideration. The exergetic efficiency of the overall energy conversion-storage system including methanol as storage medium was evaluated to be between 16.2 and 20.0% depending on the applied conversion technology. Methanol is suitable not only as stationary energy storage, but it could also be used as fuel for transportation. The energy storage system with hydrogen as storage medium shows higher exergetic efficiency than the methanol route. However, the storage of hydrogen is clearly more complex and cost-intensive.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Industrial and Engineering Chemistry Research, Vol. 2010, No. 49, 03.11.2010, p. 11073-11078.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Assessment of methanol synthesis utilizing exhaust CO2 for chemical storage of electrical energy
AU - Rihko-Struckmann, Liisa K.
AU - Peschel, Andreas
AU - Hanke-Rauschenbach, Richard
AU - Sundmacher, Kai
N1 - Copyright: Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/11/3
Y1 - 2010/11/3
N2 - The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one way to recyle CO2 and lower the global CO2 emissions. Energetic analysis reveals that exergy losses are most severe in the parts of the system when electrical energy is converted to chemical (electrolysis) and when chemical energy is converted to electrical (power generation). In methanol production, the exergetic efficiency is 83.1%, when the chemical exergy of hydrogen and methanol, the exergy of the power input and the released heat are taken into consideration. The exergetic efficiency of the overall energy conversion-storage system including methanol as storage medium was evaluated to be between 16.2 and 20.0% depending on the applied conversion technology. Methanol is suitable not only as stationary energy storage, but it could also be used as fuel for transportation. The energy storage system with hydrogen as storage medium shows higher exergetic efficiency than the methanol route. However, the storage of hydrogen is clearly more complex and cost-intensive.
AB - The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one way to recyle CO2 and lower the global CO2 emissions. Energetic analysis reveals that exergy losses are most severe in the parts of the system when electrical energy is converted to chemical (electrolysis) and when chemical energy is converted to electrical (power generation). In methanol production, the exergetic efficiency is 83.1%, when the chemical exergy of hydrogen and methanol, the exergy of the power input and the released heat are taken into consideration. The exergetic efficiency of the overall energy conversion-storage system including methanol as storage medium was evaluated to be between 16.2 and 20.0% depending on the applied conversion technology. Methanol is suitable not only as stationary energy storage, but it could also be used as fuel for transportation. The energy storage system with hydrogen as storage medium shows higher exergetic efficiency than the methanol route. However, the storage of hydrogen is clearly more complex and cost-intensive.
KW - Electric network analysis
KW - Energy conversion
KW - Exergy
KW - Flywheels
KW - Fuel storage
KW - Hydrogen
KW - Methanol
KW - Synthesis gas manufacture
UR - http://www.scopus.com/inward/record.url?scp=78049366472&partnerID=8YFLogxK
U2 - 10.1021/ie100508w
DO - 10.1021/ie100508w
M3 - Article
AN - SCOPUS:78049366472
VL - 2010
SP - 11073
EP - 11078
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 49
ER -