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Energies 2014, 7(11), 7266-7281; doi:10.3390/en7117266

Performance Analysis of Cold Energy Recovery from CO2 Injection in Ship-Based Carbon Capture and Storage (CCS)

1
Division of Ocean Systems Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea
2
Ocean Science and Technology School, Korea Maritime & Ocean University, 727 Taejong-ro, Youngdo-gu, Busan 606-791, Korea
*
Author to whom correspondence should be addressed.
Received: 30 June 2014 / Revised: 15 October 2014 / Accepted: 5 November 2014 / Published: 12 November 2014
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Abstract

Carbon capture and storage (CCS) technology is one of the practical solutions for mitigating the effects of global warming. When captured CO2 is injected into storage sites, the CO2 is subjected to a heating process. In a conventional CO2 injection system, CO2 cold energy is wasted during this heating process. This study proposes a new CO2 injection system that takes advantage of the cold energy using the Rankine cycle. The study compared the conventional system with the new CO2 injection system in terms of specific net power consumption, exergy efficiency, and life-cycle cost (LCC) to estimate the economic effects. The results showed that the new system reduced specific net power consumption and yielded higher exergy efficiency. The LCC of the new system was more economical. Several cases were examined corresponding to different conditions, specifically, discharge pressure and seawater temperature. This information may affect decision-making when CCS projects are implemented. View Full-Text
Keywords: carbon capture and storage; CO2 injection; cold energy recovery; Rankine cycle; exergy efficiency; life-cycle cost carbon capture and storage; CO2 injection; cold energy recovery; Rankine cycle; exergy efficiency; life-cycle cost
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

You, H.; Seo, Y.; Huh, C.; Chang, D. Performance Analysis of Cold Energy Recovery from CO2 Injection in Ship-Based Carbon Capture and Storage (CCS). Energies 2014, 7, 7266-7281.

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