Exergetic optimization of proposed Takigami binary geothermal power plant, Oita, Japan

Saeid Jalilinasrabady, Ryuichi Itoi, Hiroki Gotoh, Rie Yamashiro

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

10 被引用数 (Scopus)

抄録

The single flash Takigami Geothermal Power Plant is located in the southwestern part of Oita prefecture, Kyushu Island, Japan, with installed capacity of 27.5 MW. Energy and exergy of waste brine from a single flash system were calculated as 45.71%) and 37.64% of the total available energy and exergy of the produced fluid, respectively. The separated brine could be used as a heat source for a combined power production and direct use applications. For a feasibility study of waste heat utilization, a binary plant was selected for power generation in a combined system with the single flash plant. The net power output of the binary plant was calculated to be 8,660 kW. Mathematical models for energy and exergy flows were developed and implemented in Engineering Equation Solver software. The largest exergy destruction for the waste brine occurred at the condenser and evaporator with 16.6% and 30.5%) of total available exergy destroyed, respectively. The overall exergy and energy efficiencies for the binary plant were 31.15%) and 4.67%, respectively. A Grassmann diagram of the overall exergy flow illustrates the overall exergy flow of the process. Exergy analysis is a helpful tool for analyzing geothermal plants from the viewpoint of optimum use of produced energy.

本文言語英語
ホスト出版物のタイトルGeothermal Resources Council Annual Meeting 2011, Geothermal 2011
ページ1305-1311
ページ数7
出版ステータス出版済み - 2011
イベントGeothermal Resources Council Annual Meeting 2011, Geothermal 2011 - San Diego, CA, 米国
継続期間: 10 23 201110 26 2011

出版物シリーズ

名前Transactions - Geothermal Resources Council
35 2
ISSN(印刷版)0193-5933

その他

その他Geothermal Resources Council Annual Meeting 2011, Geothermal 2011
国/地域米国
CitySan Diego, CA
Period10/23/1110/26/11

All Science Journal Classification (ASJC) codes

  • 再生可能エネルギー、持続可能性、環境
  • エネルギー工学および電力技術
  • 地球物理学

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