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Heat transfer metrology issues in two‐phase bubble column reactors
Author(s) -
Béliard PierreEmmanuel,
Schweich Daniel,
Clément Patrice,
GauthierMaradei Paola,
Dromard Nicolas
Publication year - 2010
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.20313
Subject(s) - metrology , adiabatic process , tube (container) , heat transfer , bubble , heat transfer coefficient , mechanics , thermodynamics , materials science , column (typography) , phase (matter) , chemistry , physics , optics , mechanical engineering , engineering , composite material , organic chemistry , connection (principal bundle)
The metrology and the impact of various parameters and operating conditions on the bulk‐to‐tube heat transfer coefficients in two‐phase bubble columns are investigated on a small‐scale mock‐up. It is shown that (1) quasi‐adiabatic conditions can be reached in the column; (2) the bulk‐to‐tube heat transfer coefficients for each U ‐tube downward and upward sections may or may not differ significantly, depending on the way uncertainty of the measurements is estimated; (3) using the different measurements and uncertainty estimates for given conditions, a mean heat transfer coefficient over all tubes is estimated within ±5%. The consequences for bulk‐to‐tube heat transfer coefficient prediction in a larger column are discussed.