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Heat and mass transfer transients in cylinder drying: Part II. Felted cylinders
Author(s) -
Nissan A. H.,
George H. H.
Publication year - 1961
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690070421
Subject(s) - mechanics , cylinder , mass transfer , heat transfer , thermal conduction , capillary action , thermodynamics , vaporization , chemistry , work (physics) , moisture , transient (computer programming) , materials science , composite material , mechanical engineering , physics , engineering , computer science , operating system
An investigation of transient heat transfer and water removal from a sheet on a steam cylinder was made. The sheet was pressed onto the cylinder by the aid of a felt. A theory describing the heat transfer in terms of the Fourier heat equation and appropriate boundary conditions was developed. The differential equation describing fluid flow in a capillary under the capillary potential was also developed. This equation was solved for small values of time. The experimental work included the measurement of the transient temperatures at internal points in the sheet, the average felt temperature before and after a run, the mass of moisture lost by the sheet, and the mass of water gained by the felt. It was found that on felted cylinders the majority of the moisture was removed by liquid transport. It was also found that heat was transferred through the sheet by vaporization‐condensation cycles as well as conduction.