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.
|Number of pages||7|
|Journal||Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B|
|Publication status||Published - 1996 Jan 1|
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering