Effects of mass transfer and mass leakage on performance of four-reservoir chemical pumps

Authors: Xia, D.¹; Chen, L. G.²; Sun, F. R.¹

Source: Journal of the Energy Institute, Volume 82, Number 3, September 2009 , pp. 176-179(4)

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Abstract:

A cyclic model of a four-reservoir chemical pump with irreversible mass transfer and mass leakage is put forward. The optimal relation between the coefficient of performance (COP) and the rate of energy pumping is derived using finite time thermodynamics or thermodynamic optimisation. The mass leakage makes the performance characteristic of the cycle changes from a monotonic decreasing function to a parabolic-like one. There exists a maximum COP. Both the maximum COP and the corresponding rate of energy pumping are derived analytically. The results obtained herein can provide some new theoretical instructions for the optimal design of many devices, such as chemical reactive devices, mass exchangers, photochemical cells and solid state devices.

Keywords: FINITE RATE MASS TRANSFER; FINITE TIME THERMODYNAMICS; MASS LEAKAGE; FOUR-RESERVOIR CHEMICAL PUMP

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/014426009X12448168550145

Affiliations: 1: Postgraduate School, Naval University of Engineering, Wuhan 430033, China 2: Postgraduate School, Naval University of Engineering, Wuhan 430033, China;, Email: lgchenna@yahoo.com

Publication date: 2009-09-01

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