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The reversed chemical engine cycle with application to desalination processes

Author(s)
Qureshi, Muhammad Bilal; Zubair, Syed M.; Thiel, Gregory Parker; Lienhard, John H.
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Abstract
In this paper, a novel thermodynamic cycle is proposed, termed the reversed chemical engine cycle. In the cycle, a net input of work is used to transfer mass from a low chemical potential reservoir to a high chemical potential reservoir. The cycle has two mass exchangers, a pump and a turbine. The only irreversibility considered in the model is finite-rate mass transfer. Similar to the reversed Carnot cycle, expressions for the performance ratio (analogous to the coefficient of performance) are obtained under the condition of minimized power requirement for the endoreversible and, in turn, the reversible case. The reversed mass engine cycle is shown to be a special case of the reversed chemical engine. An equipartitioned hybrid forward osmosis reverse osmosis (FO–RO) system is considered as an example of the cycle.
Date issued
2016-08
URI
https://hdl.handle.net/1721.1/121561
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
Desalination
Publisher
Elsevier
Citation
Qureshi, Bilal A., Syed M. Zubair, Gregory P. Thiel and John H. Lienhard V. "The reversed chemical engine cycle with application to desalination processes." Desalination 398 (2016): pp. 256-264.
Version: Author's final manuscript
ISSN
0011-9164
1873-4464

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