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Integrated Systems Analyses of Using Geologically Stored CO2 and Sedimentary Basin Geothermal Resources to Produce and Store Energy
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Integrated Systems Analyses of Using Geologically Stored CO2 and Sedimentary Basin Geothermal Resources to Produce and Store Energy. |
| 개인저자 | Ogland-Hand, Jonathan Davis. |
| 단체저자명 | The Ohio State University. Environmental Science. |
| 발행사항 | [S.l.]: The Ohio State University., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 232 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-02B. Dissertation Abstract International |
| ISBN | 9781085581370 |
| 학위논문주기 | Thesis (Ph.D.)--The Ohio State University, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
Advisor: Bielicki, Jeffrey. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | Reducing carbon dioxide (CO2) emissions is one of the most pressing issues facing the electricity system. Towards this end, prior work investigated generating electricity with geologically stored CO2 by using it to extract heat from sedimentary basins geothermal resources. This dissertation expands on this idea by developing and valuing approaches for CO2-based energy storage.In the first chapter, we investigate the value that three bulk energy storage (BES) approaches have for reducing system-wide CO2 emissions and water requirements: CO2-Bulk Energy Storage (CO2-BES), which is a CO2-based energy storage approach that uses a concentric-ring, pressure based (CRP-BES) design, Pumped Hydro Energy Storage (PHES), and Compressed Air Energy Storage (CAES). Our results suggest that BES could decrease system-wide CO2 emissions by increasing the utilization of wind, but it can also alter the dispatch order of regional electricity systems in other ways (e.g., increase in the utilization of natural gas power capacity and of coal power capacity, decrease in the utilization of nuclear power capacity). While some changes provide negative value (e.g., decrease in nuclear increased CO2 emission), the system-wide values can be greater than operating cost of BES.In the second and third chapters, we investigate two mechanisms for using CO2 for energy storage: storage of (1) pressure and (2) heat. For pressure storage, we investigated the efficacy of the CO2-BES system using the CRP-BES design over cycles of varying durations. We found that CO2-BES could time-shift up to a couple weeks of electricity, but the system cannot frequently dispatch electricity for longer durations than was stored. Also, the cycle duration does not substantially affect the power storage capacity and power output capacity if the total time spent charging, discharging, or idling is equal over a multi-year period. For thermal energy storage, we investigated the efficacy of using pre-heated CO2 and pre-heated brine as the media for thermal energy storage in the subsurface. We found that it is likely that the thermophysical characteristics of brine render it advantageous over CO2 for this purpose.In the fourth chapter, we determine the potential that the CO2-BES system using the CRP-BES design has to increasing the profit-maximizing high voltage direct current (HVDC) transmission capacity that connects a wind farm in Eastern Wyoming to Los Angeles, California. Our results suggest that the optimal dispatch of the CO2-BES system in this application includes operating as both a geothermal power plant and an energy storage facility and that the system can increase the profit-maximizing HVDC transmission capacity.With these findings, we conclude that using geologically stored CO2 and geothermal resources for energy storage can provide value to the electricity system in multiple ways in part because these systems have unique operational capabilities compared to conventional energy storage approaches (e.g., PHES, CAES). Potential future works include optimizing the CRP-BES design for a specific application, developing a CO2-seasonal energy storage approach, and expanding the model boundaries to include the source of CO2. |
| 일반주제명 | Environmental economics. Energy. Engineering. Alternative energy. |
| 언어 | 영어 |
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