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Transport Phenomena in Thermal Engineering. Volume 2

ISBN:
1-56700-015-0 (Print)

HEAT TRANSFER BETWEEN FLUIDIZED PARTICLES AND GAS FOR A CONCEPTUAL FLUIDIZED BED BLANKET OF A NUCLEAR FUSION REACTOR

Saburo Toda
Department of Nuclear Engineering, Department of Quantum Science and Energy Engineering, Tohoku University, Aramaki-Aza-Aoba 01, Aoba-ku, Sendai 980-8579, Japan

T. Kurusu
Department of Nuclear Engineering, Tohoku University, Aramaki, Aoba, Sendai 980, JAPAN

S. Sumiyoshi
Department of Nuclear Engineering, Tohoku University, Aramaki, Aoba, Sendai 980, JAPAN

M. Okuyama
Department of Nuclear Engineering, Tohoku University, Aramaki, Aoba, Sendai 980, JAPAN

Abstract

A conceptual fluidized bed blanket and its cooling method is proposed in which particles of breeding materials are fluidized by a coolant gas. To further this concept, fundamental experiments were carried out in order to enhance the efficiency of heat transfer between fluidized particles of the breeding material and the coolant gas. Experiments using pre-heated glass beads and air were made. Heat transfer was enhanced by the well mixed particles and the uniformly distributed temperature in a simulated fluidizing bed. A new model for determining the mean heat transfer coefficients between fluidized particles and gas in various type of gas-solid fluidized beds is discussed.