Hampson type heat-exchanger technology and economic evaluation for LNG re- gasification and power generation At LNG receiving terminals

AGARWAl, Randeep, HISAZUMI, Yoshinori, KEGASA, Akeshi, HORI, Tsukasa, & Brown, Richard J. (2015) Hampson type heat-exchanger technology and economic evaluation for LNG re- gasification and power generation At LNG receiving terminals. In International Conference on Power Engineering-15 (ICOPE-15), November 30 - December 4 2015, Yokohama, Japan.

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Abstract

The system for high utilization of LNG cold energy is proposed by use of process simulator. The proposed design is a closed loop system, and composed by a Hampson type heat exchanger, turbines, pumps and advanced humid air turbine (AHAT) or Gas turbine combined cycle (GTCC). Its heat sources are Boil-off gas and cooling water for AHAT or GTCC. The higher cold exergy recovery to power can be about 38 to 56% as compared to the existing cold power generation of about 20% with a Rankine cycle of a single component. The advantage of the proposed system is to reduce the number of heat exchangers. Furthermore, the environmental impact is minimized because the proposed design is a closed loop system. A life cycle comparative cost is calculated to demonstrate feasibility of the proposed design. The development of the Hampson type exchangers is expected to meet the key functional requirements and will result in much higher LNG cold exergy recovery and the overall system performance i.e. re-gasification. Additionally, the proposed design is expected to provide flexibility to meet different gas pressure suited for the deregulation of energy system in Japan and higher reliability for an integrated boil-off gas system.

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ID Code: 86996
Item Type: Conference Paper
Refereed: Yes
Keywords: Hampson type, LNG, Exergy, Closed loop, Gasification, AHAT, GTCC, Sankey diagram
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Copyright Owner: © 2015 The Japan Society of Mechanical Engineers
Deposited On: 01 Sep 2015 05:15
Last Modified: 17 Dec 2015 05:24

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