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1993 Fiscal Year Final Research Report Summary

STUDY OF POWER GENERATION BY USING VOLGANIC GEOTHERMAL RESERVOIR

Research Project

Project/Area Number 03555135
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 資源開発工学
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

EHARA Sachio  FAC.ENGINEERING, KYUSHU UNIVERSITY, PROFESSOR, 工学部, 教授 (10002346)

Co-Investigator(Kenkyū-buntansha) HAYASHI Masamoto  HAYASHI ENGINEERING COMP.LTD., DIRECTOR, 取締役
KONDO Takeshi  MITSUBISHI HEAVY INDUSTRY LTD., CHIEF ENGINEER, 長崎造船所, 係長
YOSHIDA Takao  KAJIMA CONSTRUCTION LTD., CHIEF RESEARCHER, 技術研究所, 主管研究員
KODAMA Yoshio  FAC.ENGINEERING, NAGASAKI UNIVERSITY, PROFESSOR, 工学部, 教授 (00037938)
MOGI Tohru  FAC.ENGINEERING, KYUSHU UNIVERSITY, ASSISTANT, 工学部, 助手 (80182161)
Project Period (FY) 1991 – 1993
KeywordsGENERATION BY VOLCANO ENERGY / VOLCANIC STEAM / VOLCANO ENERGY / HEAT EXTRACTION / GEOTHERMAL DEVELOPMENT / MATERIAL TESTING / STEAM GENERATION / TURBINE
Research Abstract

Volcano energy might have an important place in the future geothermal energy development. There are several potential resources adjacent to active volcanoes including volcanic geothermal reservoirs, magma origin fluid systems and solidified or molten magma bodies. Although it is possible to approach magma boodies directly, it would seem more reasonable to develop technologies step by step. Hence, an order of development targets should be set, beginning with shallower or easier potential resources progressing toward those deepr or more severe. As a first target for volcano energy utilization, we selected volcanic geothermal reservoirs which are found beneath surface fumarolic activities in active volcanoes and estimated the heat extraction rate. We investigated heat transfer characteristics at the site and estimated the heat extraction rate of the Downhole Coaxial Heat Exchanger (DCHE) by numerical simulation. As a result of this study, it is concluded that more than 16MW of thermal energy can be extracted from a single well of 3000m in depth by the DCHE.The power generation cost was estimated to be about 7 Yen/kWh assuming that the drilling costs are almost the same as ordinary geothermal wells. We also did material testing by using the fumarolic gasses obtained from a shallow well in the active fumarolic field of Kuju volcano. As a result, rates of corrosion of materials tested are nearly equal to those obtained in the case of material testing with ordinaly geothermal steam. It means that superheated fumarolic gasses are not so corrosive. We made a small scale (1kW) of steam power generation system. It is a portable one, Then, now we can do experiments at any mountaneous test field to utilize volcanic steam.

  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] S.Ehara: "Thermal structure beneath Kuju volcano,central Kyushu,Japan" J.Volcanol.Geotherm.Res.54. 107-116 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原幸雄: "火山熱貯留層からの熱エネルギーの抽出-九重火山・九重硫黄山の例-" 地熱. 30. 220-234 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原幸雄: "火山エネルギー開発の戦略と九重火山におけるケーススタディ" 資源環境技術総合研究所第4回講演会資料. 33-44 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原幸雄: "冷却するマグマ直上に発達するマグマ性高温地熱系" 地質学論集. (印刷中). (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 江原幸雄: "将来的地熱資源としての火山エネルギー開発の試み" 日本地下水学会誌. (印刷中). (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Mogi: "Magnetotelluric interpretation of geothermal system in Kuju volcano,southwest Japan" J.Volcanol.Geotherm.Res.56. 297-308 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.EHARA: "THERMAL STRUCTURE BENEATH KUJU VOLCANO, CENTRAL KYUSHU, JAPAN" J.VOLCANOL.GEOTHERM.RES.VOL.54. 107-116 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.EHARA: "STUDY ON THERMAL PROCESSES BENEATH KUJU VOLCANO, JAPAN -A STEP TO VOLCANO ENERGY UTILIZATION-" GEOTHERMAL RESOURCES COUNCIL TRANSACTIONS. VOL.16. 153-156 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.EHARA: "STUDY ON HEAT EXTRACTION FROM VOLCANOES -AN ESTIMATION OF THE HEAT EXTRACTION RATE FROM A VOLCANIC GEOTHERMAL RESERVOIR BENEATH KUJU-IWOYAMA, JUJU VOLCANO GROUP- IN JAPANESE WITH ENGLISH ABSTRACT" CHINETSU. VOL.30. 220-234 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.MOGI: "MAGNETOTELLURIC INTERPRETATION OF GEOTHERMAL SYSTEM IN KUJU VOLCANO, SOUTHWESTERN JAPAN" J.VOLCANOL.GEOTHERM.RES.VOL.56. 297-308 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.EHARA: "THERMAL PROCESSES BENEATH ACTIVE VOLCANOES AND EXTRACTION OF VOLCANO ENERGY -A CASE STUDY OF THE KUJU-IWOYAMA FUMAROLIC FIELD, KUJU VOLCANO, JAPAN" GEOTHERMAL RESEARCH REPORT OF KYUSHU UNIVERSITY. NO.1. 17-24 (1992)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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