成果報告書詳細
管理番号20140000000479
タイトル*平成25年度中間年報 地熱発電技術研究開発 地熱発電の導入拡大に資する革新的技術開発 地熱発電適用地域拡大のためのハイブリッド熱源高効率発電技術の開発
公開日2014/7/5
報告書年度2013 - 2013
委託先名一般財団法人電力中央研究所 国立大学法人富山大学
プロジェクト番号P13009
部署名新エネルギー部
和文要約
英文要約Title:Research and Development of Geothermal Power Generation Technology,Innovative Technology Development for Promotion of Introduction of Geothermal Power Plant, Development of Hybrid Geothermal Power Plant Combined with other thermal energy souces(FY2013-FY2015)FY2013 Annual Report

Geothermal energy is the clean and sustainable heat that lies beneath the earth's surface, and it is considered a renewable energy resource. The geothermal power plant has negligible environmental impact (approximately 0.015kg-CO2/kWh), and it is expected to help prevent carbon dioxide emissions to the atmosphere. Although geothermal energy is a very precious domestic power source for Japan, the much of geothermal resource base in Japan cannot yet be economically used. Therefore, many industries and research institutes in Japan have researched and developed technologies to harness geothermal energy.
We started to develop highly efficient hybrid geothermal power plants combined with other thermal energy sources, which are biomass, solar thermal energy, or exhaust heat from fuel cells, and so on. It is expected that the thermal efficiencies of these systems are improved by superheating the main steam through the use of the other energy sources. We have looked into the system feasibility of these hybrid power plants in the light of the engineering, economic performance, environmental laws and regulations.
The scale formation of inorganic salt such as calcium carbonate is one of the serious issues in the utilization of geothermal energy. In this research project, a novel idea of real-time sensing for scale formation using a fiber optic sensor is also demonstrated. The sensor is based on attenuated total reflection method, in which the occurring evanescent wave is applied at the interface between the surface of the core fiber and sample solution. We have found that the percent transmittance measurement to evaluate the scale formation at near infrared light showed better sensitivity than visible light.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る