TY - JOUR
T1 - Heat-transfer and defrosting characteristics of a horizontal array of cooled tubes immersed in a very shallow fluidized bed
AU - Aihara, Toshio
AU - Ohara, Taku
AU - Shimoyama, Toshiyuki
AU - Kitano, Hitoshi
N1 - Funding Information:
Acknowledgements--The authors express sincere gratitude to Professors W. Schneider and U. Schaflinger, Institut far Str6mungslehre und W~trmeabertragung, Technische Uni-versit~it Wien, for their useful discussions and suggestions. This work is a part of the research supported by a Grant-in-Air for Scientific Research A-63420029 and a Grant-in-Aid for International Scientific Research Program No. 06044018 from the Ministry of Education, Science, and Culture of Japan.
PY - 1997/5
Y1 - 1997/5
N2 - Heat transfer and defrosting characteristics of a horizontal single-row array of cooled tubes immersed in a gas-solid fluidized bed, have been studied experimentally. The fluidized bed produces gas-solid particle impinging jets to effectively remove frost layers on the tube surface. It has been verified that frost-free running of the cooled tubes is possible under the conditions of inlet air temperature -7°C, tube-surface temperature -17°C and relative humidity 80%. The local contact frequency of particles onto the tube surface was measured by an optical sensing system and the defrosting mechanism of impinging solid particles was observed in detail with a visualization technique.
AB - Heat transfer and defrosting characteristics of a horizontal single-row array of cooled tubes immersed in a gas-solid fluidized bed, have been studied experimentally. The fluidized bed produces gas-solid particle impinging jets to effectively remove frost layers on the tube surface. It has been verified that frost-free running of the cooled tubes is possible under the conditions of inlet air temperature -7°C, tube-surface temperature -17°C and relative humidity 80%. The local contact frequency of particles onto the tube surface was measured by an optical sensing system and the defrosting mechanism of impinging solid particles was observed in detail with a visualization technique.
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U2 - 10.1016/S0017-9310(96)00258-X
DO - 10.1016/S0017-9310(96)00258-X
M3 - Article
AN - SCOPUS:0031148649
VL - 40
SP - 1807
EP - 1815
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
IS - 8
ER -