成果報告書詳細
管理番号20110000000291
タイトル*平成20年度中間年報 新エネルギー技術研究開発/新エネルギーベンチャー技術革新事業(風力発電その他未利用エネルギー)/温泉エコジェネシステムの開発
公開日2011/5/17
報告書年度2008 - 2008
委託先名地熱技術開発株式会社
プロジェクト番号P10020
部署名研究開発推進部
和文要約和文要約等以下本編抜粋:1.研究開発の内容及び成果等 研究開発項目(1):「50kW高効率・低コスト超小型蒸気タービン及び発電ユニットに関する研究開発」:50kW高効率・低コスト超小型蒸気タービン及び発電ユニットの開発 および短期試験運転による性能評価 超小型蒸気タービン及び発電ユニットの開発(実証機用50kW級高効率・低コストタービン及び発電ユニットの詳細設計を行い、実証機の一部の部品製作を実施した。超小型タービン及び発電ユニットの詳細設計、ローター・ノズル部分・安全弁の試作を実施した。その部品をメーカー所有の既存の小型発電装置に組み込み、工場ベンチマーク試験を行った。実証機用熱交換器・ポンプ・冷却装置・タンク類の製作を行い、工場のベンチマーク試験用に組み立てを実施した。
英文要約 There are many high-temperature hot springs (“ONSEN”) exceeding 50 degrees C in Japan. In some cases of them, necessary portion of them is using for taking bath and rest is discharging without utility. Since it is important not to mix hot spring water with fresh water and to maintain the effect with original hot spring water from a viewpoint of balneotherapy in Japan, the power generation using temperature difference attracts the attention as a method of cooling high temperature hot spring without dilution. Kalina Cycle which uses ammonia-water heat transfer medium attracts attention recently as thermal-energy-conversion technology using low temperature heat source (70 - 120 deg.C hot water in this case). The system would simultaneously generate electricity, the heat source for hot water shower, and bathing hot spa to the hotels and be reduced the carbon dioxide. Innovation of a smaller-scale geothermal power generation system will expand the geothermal power market to rural areas where each electricity demand is relatively limited. Innovation of a lower-temperature geothermal power generation system will directly enlarge the geothermal power market because abundance of hydrothermal resource dramatically increases with decreasing resource temperature. For the dual purposes, a development project of a 50 kW class Kalina cycle geothermal power generation system is conducted. Key subjects for the project are down-sizing of the hardware with keeping its original energy conversion efficiency and protection of the heat exchanger from mineral precipitates. Based on the feasibility study in FY2007, the following research has been achieved in FY2008: (1) Development of small scale steam turbine generator and power unit: Detail design and manufacturing of power unit (Heat Exchangers, pump unit, vessels, and cooling tower) and some parts of 50kW-class steam turbine generator, test of the small scale steam turbine in the factory (turbine efficiency = 0.80 - 0.75), (2) Development for protection of the heat exchanger from mineral precipitates: Field test in Otari (Nagano) and design of optimum solution using several methodologies, i) mechanical method using cyclone separator, ii) chemical equilibrium method using CO2 injection, iii) electrochemical method using electrode, (3) Marketing research: Hearing and examination of business models for three areas. (4) Business Plan: Construction of business plans for two areas.
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