Numerical Validation of a Simplified Engineering Approach for Heat

Sep 29, 2014 - The structure is modeled by staged short adiabatic channels, represented by ... place in the gap region between the packing and the tub...
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Research Note pubs.acs.org/IECR

Numerical Validation of a Simplified Engineering Approach for Heat Transfer in a Closed-Cross-Flow Structured Tubular Reactor B. Kaskes, D. Vervloet, F. Kapteijn, and J. R. van Ommen* Department of Chemical Engineering, Delft University of Technology Julianalaan 136, 2628 BL, Delft, The Netherlands S Supporting Information *

ABSTRACT: This research note proposes a mathematical model for a closed-cross-flow-structured tubular reactor, which is a reactor that contains a structured packing (closed-cross-flow structure, CCFS) with very good heat-transfer performance. The structure is modeled by staged short adiabatic channels, represented by a PFR model, with intermediate cooling at the wall intersections. A simplification of representing several parallel channels by just one channel with averaged properties only leads to a minor loss of accuracy. For a 5-cm-thick tube, the loss in accuracy is