ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
HEAT TRANSFER IN PARTICULATE SYSTEMS THE INFAMOUS FILM HEAT TRANSFER COEFFICIENT
Résumé
Heat transfer in particulate systems occurs in many
parts of the process industries and even today the prediction of the film heat transfer coefficient leaves much to be desired. Correlations exist which can be used to evaluate values of the coefficient, but the problem arises, which value should be used in design calculations. This
presentation briefly discusses some of the problems
associated with the interpretation of the film heat transfer
coefficient, especially when used in lumped parameter
models of the dynamic transfer process and a number of
suggestions are proposed for the fingerprinting of the
experimental data used to generate the correlations. These
relate to structure of the particulate system, the pressure
drop characteristics of the system and the analysis of the
thermal data, via heat balances of the original experimental
investigations. Future reported pressure drop and film heat
transfer data should not be accepted in the open literature
unless the supporting information regarding the
fingerprinting of the experimental technique and data
reduction methods are included.