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 |
|---|---|
| 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 |
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Keywords
- Contact conductance
- Fluidized bed
- Inverse analysis
- Temperature visualization
ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
Cite this
Direct-contact heat exchange between fluidizing particles and a heat transfer surface in a fluidized bed : Temperature visualization of fluidizing particles. / Yamada, Jun; Nagahara, Norihisa; Satoh, Isao; Kurosaki, Yasuo.
In: Heat Transfer - Asian Research, Vol. 31, No. 3, 05.2002, p. 165-181.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Direct-contact heat exchange between fluidizing particles and a heat transfer surface in a fluidized bed
T2 - Temperature visualization of fluidizing particles
AU - Yamada, Jun
AU - Nagahara, Norihisa
AU - Satoh, Isao
AU - Kurosaki, Yasuo
PY - 2002/5
Y1 - 2002/5
N2 - 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.
AB - 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.
KW - Contact conductance
KW - Fluidized bed
KW - Inverse analysis
KW - Temperature visualization
UR - http://www.scopus.com/inward/record.url?scp=0036571778&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036571778&partnerID=8YFLogxK
U2 - 10.1002/htj.10027
DO - 10.1002/htj.10027
M3 - Article
AN - SCOPUS:0036571778
VL - 31
SP - 165
EP - 181
JO - Heat Transfer - Asian Research
JF - Heat Transfer - Asian Research
SN - 1099-2871
IS - 3
ER -