Radiation emitted from fluidizing particles adjacent to a heated surface in a fluidized bed

Jun Yamada, Yasuo Kurosaki, Tomoyuki Morikawa

Research output: Contribution to journalArticle

Abstract

We experimentally investigated the radiation heat exchange occurring in a gas-solid fluidized bed between the fluidizing particles and a heated heat transfer surface. To evaluate this heat exchange, radiation emitted from fluidizing particles located adjacent to the heated surface was measured using an infrared imager through the transparent MgF2 heated surface, which was remotely heated by a CO2 laser. Our results revealed that the fluidizing particles are indeed heated by the surface. In addition, we found that these particles frequently emit a significant amount of radiation energy against the surface, which suppresses the radiation heat exchange between it and the fluidizing particles, and that the radiation energy increases with decreasing particle diameter and increasing particle emissivity.

Original languageEnglish
Pages (from-to)234-240
Number of pages7
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume62
Issue number593
Publication statusPublished - 1996 Jan
Externally publishedYes

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Fluidization
Fluidized beds
beds
Radiation
radiation
Heat radiation
heat
Image sensors
emissivity
Heat transfer
Infrared radiation
Lasers
heat transfer
Gases
energy
gases
lasers

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Radiation emitted from fluidizing particles adjacent to a heated surface in a fluidized bed. / Yamada, Jun; Kurosaki, Yasuo; Morikawa, Tomoyuki.

In: Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 62, No. 593, 01.1996, p. 234-240.

Research output: Contribution to journalArticle

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