Second-law analysis of a two-dimensional regenerator

J.Y. San, W.M. Worek and Z. Lavan

Energy, 1987, vol. 12, issue 6, 485-496

Abstract: A second-law analysis of a two-dimensional, fixed-bed regenerator is presented. We assume that the solid matrix has infinite thermal resistance in the flow direction and finite thermal resistance, characterized by the matrix Biot number, perpendicular to the flow direction. A trade-off between mechanical and thermal exergy losses yields optimal Ntu, CminCr and effectiveness. Therefore, by specifying a channel geometry, mass flow-rate, matrix porosity and total frontal area, the optimum channel length and operating period can be determined. Increasing the matrix Biot number causes a reduction in the second-law efficiency at high effectiveness and a reduction in the optimum effectiveness corresponding to the maximum second-law efficiency.

Date: 1987
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:12:y:1987:i:6:p:485-496

DOI: 10.1016/0360-5442(87)90007-7

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