Premium
Energy trapping during reverse flow operation with discrete power introduction: Experiments and theory
Author(s) -
Snyder Jon D.,
Subramaniam Bala
Publication year - 1996
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.5450740526
Subject(s) - axial symmetry , mechanics , adiabatic process , volumetric flow rate , materials science , trapping , offset (computer science) , power (physics) , flow (mathematics) , thermodynamics , physics , computer science , ecology , quantum mechanics , biology , programming language
It is shown that reverse flow operation is well‐suited for packed‐bed operation requiring energy addition from sources external to the packing. Packed‐bed temperature profiles are dictated by (a) how the power is distributed axially, and (b) the temperature‐profile movement, proportional to the volume of flowing gas introduced during the semicycle (flow rate × semicycle period). While peak‐shaped temperature profiles result for energy input at axially central locations, plateau‐shaped temperature profiles result for energy distribution offset from the center and for relatively large volumes of gas introduced during a semicycle. In both cases, however, efficient energy integration is achieved with the maximum temperature rise being hundreds of degrees greater than the adiabatic temperature rise for unidirectional flow operation.