Second-law optimization of regenerative heat exchangers, including the effect of matrix heat conduction

C.M. Shen and W.M. Worek

Energy, 1993, vol. 18, issue 4, 355-363

Abstract: The effects of heat conduction in a regenerator matrix and unbalanced heat-capacity rates on the second-law efficiency of rotary regenerators are documented. The results show that the maximum second-law efficiency increases as the ratio of the heat-capacity rate increases. The overall number of transfer units NTUo corresponding to this optimum also increases with heat capacity rate C∗. Including the effect of heat conduction in the regenerator matrix lowers the second-law efficiency and increases the NTUo required to obtain the maximum second-law efficiency. These results can be used to design and optimize the performance of a regenerator considering both heat transfer and pressure drop effects.

Date: 1993
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:18:y:1993:i:4:p:355-363

DOI: 10.1016/0360-5442(93)90070-T

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