, Volume 51, Issue 9, pp 1554-1562
Date: 08 Aug 2008

Constructal optimization for a solid-gas reactor based on triangular element

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Entropy generation minimization for heat and mass transfer process in a solid-gas reactor is carried out based on constructal theory by using triangular elemental area. The aspect ratio of the triangular elemental area is optimized under constraint conditions. A number of optimal triangular elements are assembled to a new large rectangular area, which is optimised again. The procedure is repeated until the control-volume is covered, and the complete analytical results are obtained. The effects of some parameters on minimum entropy generation are analysed by numerical examples. The results show that smaller entropy generation can be obtained when the optimization for a given volume is carried out on the basis of triangular elements than those obtained on the basis of rectangular elements.

Supported by the Program for New Century Excellent Talents in Universities of China (Grant No. NCET-04-1006) and Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No. 200136)