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Heat transfer to liquid streams in a packed tube containing large packings
Author(s) -
Chennakesavan Balapa
Publication year - 1960
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.690060216
Subject(s) - packed bed , dimensionless quantity , pressure drop , tube (container) , heat transfer , thermodynamics , nitrobenzene , materials science , chemistry , aqueous solution , analytical chemistry (journal) , chromatography , composite material , organic chemistry , physics , catalysis
Wall‐area heat transfer coefficients based on bulk‐mean temperatures of the liquids flowing upward in a steam‐jacketed packed tube (4 ft. long and 2.25‐in. I.D.) were determined. The tube was randomly packed in each of the experiments with spherical glass packings of uniform size (with diameters between 3/4 and 5/32 in.). The liquids used were water, toluene, 45% aqueous glycerine, and nitrobenzene. Analogous correlations were developed for the heat transfer coefficients and for pressure drop, the dimensionless groups in the above being the same as for open tubes. The two relationships are applicable for the range in D T /D P ratio from 14 to 3 and in N Re from 40,000 to 300. The first is satisfactory within ±15% for heating of liquids in the above packed tube, the second within ±10% for most of the data of packed tubes reported so far.