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成果報告書詳細
管理番号20180000000347
タイトル*平成28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/温泉熱利用発電のためのスケール対策物理処理技術の研究開発
公開日2018/6/28
報告書年度2016 - 2016
委託先名国立大学法人東北大学 東北特殊鋼株式会社 株式会社テクノラボ
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 technique / Innovative technology development for expanding introduction of geothermal power generation / Research and development of physical preventing scale technology for geothermal power generation with hot spring heat utilization (FY 2014-2017) FY 2016 Annual Report

[Purpose]
This study aims to reduce the operational costs of geothermal power generation by utilizing the low cost and continuously-working physical scale preventing technology, ultrasound treatment, and the high-frequency electromagnetic treatment.

[Content]
The scale prevention effect (ultrasound treatment, high-frequency electromagnetic treatment and those complex utilization) was confirmed by the utilizing scale mass weighing system of the simulant hot spring water.
On the Matsushiro Onsen hot spring (Nagano Prefecture), the high-frequency electromagnetic treatment effect for the hot spring water was investigated by using a zeta potential analyzer and a particle size counter. As a result of the investigation, it was found that the high-frequency electromagnetic field had an influence to the interface of microscale particles.
The effectiveness of high-frequency electromagnetic treatment and ultrasound treatment for the control biofilm and biofouling was investigated by using the laboratory biofilm reactor. To evaluate biofilms and confirm the correlation in the field experiment, we developed the new evaluation process where biofilm would be stained by crystal violet and transferred to polymer tapes. And we also developed a new method for the evaluation by crystal violet on the laboratory.
The hybrid scale prevention device was improved through the field experiment. A touch panel-style operation system and a power fail recovery function were added to the device, and we also developed an automatic resonance frequency search system for ultrasound treatment.
The thirty places of the hot spring areas were investigated. The water quality of hot spring and compatibility with electromagnetic field frequency and intensity were analyzed.
The field experiments of the hybrid scale prevention device were carried out in the Kiyosato Onsen hot spring (Yamanashi Prefecture) and the Matsushiro Onsen hot spring (Nagano Prefecture). The effectiveness of the application of the high-frequency electromagnetic treatment was also confirmed by the experiments.
The past 644 data of the electromagnetic treatment were organized and systematized for the formulation of an operational manual of the hybrid scale prevention device.
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