Abstract
Heat conduction during contact between a heat transfer surface and fluidizing particles, a phenomenon which is one of the effective heat transfer mechanisms in a gas-solid fluidized bed, has been empirically investigated. The temperature profile of the fluidizing particles during the contact period is visualized with the aid of an infrared imager. The visualization reveals that the particles have been considerably heated in the thermal boundary layer on the heat transfer surface before contact. Based on the visualized temperature profile of the particles, the contact conductance between a fluidizing particle and the heat transfer surface is estimated by an in inverse analysis. Using the evaluated contact conductance, the contributions of the conductive heat transfer to the total heat transfer are also evaluated.
Original language | English |
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Pages (from-to) | 165-181 |
Number of pages | 17 |
Journal | Heat Transfer - Asian Research |
Volume | 31 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2002 May |
Externally published | Yes |
Keywords
- Contact conductance
- Fluidized bed
- Inverse analysis
- Temperature visualization
ASJC Scopus subject areas
- Condensed Matter Physics
- Fluid Flow and Transfer Processes