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College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Keiji Miyazaki, Yoshio Shimakawa, Shoji Inoue, Nobuo Yamaoka, Yoichi Fujii-E
Fusion Science and Technology | Volume 4 | Number 2 | September 1983 | Pages 733-738
Blanket and First Wall Engineering | doi.org/10.13182/FST83-A22947
Articles are hosted by Taylor and Francis Online.
A medium-scale lithium-loop with 40 /min and 3bar ratings was constructed to gain basic information on MHD effects on the flow and heat transfer characteristics. The loop has two parallel test sections for pressure drop and heat transfer experiments, which were made of 15.75 mm I.D. and 19.05 mm O.D. 316-SS tubes and placed between magnet poles of 500 mm vertical length. The pressure drop test section was provided with two strain gage type pressure transducers and the heat transfer test section with a 300 mm long 7.6 mm O.D. high flux electric heater pin. The experiment covered the ranges of the magnetic flux density: 0–1.0 T, The Li flow velocity: 0.2 –5.0 m/sec, the heat flux: 0–120 W/cm2 and the Li temperature: 350–400 °C. The experimental results of potential and pressure drop agreed well with the theoretical prediction based on the uniform-velocity thick wall model. The heat transfer coefficient, or Nusselt number, was decreased with increasing magnetic flux density, but not monotonically in a weak magnetic field region of 0.2–0.4 T, where a singular phenomenon , i.e. an elevation of Nusselt number was observed.