ISSN Online: 2377-424X
International Heat Transfer Conference 3
HEAT TRANSFER IN A GAS-FLUIDIZED BED
Аннотация
The mechanism of heat transfer in a fluidized bed has been investigated. Heat transfer is
considered to be an unsteady state phenomenon,
largely dependent on the overall bed circulation,
which shows a stick- and-slip-flow
character. Values of the heat transfer coefficient
have been measured with a heating band
and an N.T.C.-resistor. The heat transfer
turns out to be a periodical function of time.
The period could be measured from the fluctuations
in the temperature, the static
pressure and the shear stresses. The experimental
results are compared with the theoretical
values given by the equation of Mickley,
Fairbanks and Hawthorn.