Researcher Profile and Settings

researchmap

https://researchmap.jp/watanabe-takashi

Research funding number

90520148

Research Projects

• Experimental study on active control of hydrogen solubility for improvement of safety and thermal efficiency of a molten salt blanket
  Sagara Akio
  Addition of 0.1 wt% Ti fine powder into molten salt coolants (FLiBe, FLiNaBe, FLiNaK) increased the effective hydrogen solubility by > 5 orders. The addition of Ti fine powder also suppressed hydrogen absorption into a vanadium alloy material immersed in a molten salt coolant. These experimental results indicate that the present new concept, i.e. active control of hydrogen solubility of molten salt coolants by addition of metal fine powders, enables safer and high-efficiency power generation with a molten salt cooled blanket system. In the present study, an idea of selective microwave heating of the metal fine powder in a molten salt coolant has newly been proposed for effective hydrogen recovery from the powder and successfully demonstrated., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2013/10 -2017/03, Grant-in-Aid for Scientific Research (A), National Institute for Fusion Science
• Experimental study on separate recovery of hydrogen and heat from molten salt circulation system for establishment of liquid blanket system
  SAGARA Akio; NISHIMURA Arata; MUROGA Takeo; NAGASAKA Takuya; TANAKA Teruya; HISHINUMA Yoshimitsu; GOTO Takuya; KONDO Masatoshi; YAGI Juro; WATANABE Takashi; FUKADA Satoshi
  Flinak loop system Orosh2i-1 has been designed and constructed as the world’s first apparatus for performing experiments on separate recovery of hydrogen and heat under circulation condition of a molten salt cooled blanket system. Development and studies on a centrifugal pump for high temperature (>500 oC) Flinak, hydrogen sensor, hydrogen recovery module, hydrogen permeation barrier coating, anti-corrosion coating, hydrogen absorption and release properties in Flinak, etc. have been successfully advanced for establishment of a self-cooled molten salt blanket system with high inherent safety., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2009 -2012, Grant-in-Aid for Scientific Research (A), National Institute for Fusion Science