Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/154079
Title: A generalized reverse-electrodialysis model incorporating both continuous and recycle modes for energy harvesting from salinity gradient power
Authors: Yan, Zhihong
Huang, Ying
Jiang, Chenxiao
Mei, Ying
Tan, Siew-Chong
Tang, Chuyang
Shu, Yuen Hui
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Yan, Z., Huang, Y., Jiang, C., Mei, Y., Tan, S., Tang, C. & Shu, Y. H. (2021). A generalized reverse-electrodialysis model incorporating both continuous and recycle modes for energy harvesting from salinity gradient power. IEEE Access, 9, 71626-71637. https://dx.doi.org/10.1109/ACCESS.2021.3078733
Journal: IEEE Access
Abstract: Salinity gradient power (SGP) derived from sea and fresh water through reverse electrodialysis (RED) is an emerging discipline with huge potential for carbon-free energy harvesting. SGP technology is still in an infant stage and there is a need for accurate mathematical tools to study its energy harvesting process. Previous models assume a constant salinity gradient with a continuous flow of sea water with constant salinity. In the case of recycling used sea water, such assumption is no longer valid because the salinity gradient reduces with operating time. This paper presents a generalized RED model that covers both of the continuous and recycle modes. It combines an improved kinetic battery module (KiBaM) with an electrical circuit module (ECM), for capturing the behaviors of both RED stacks operating in continuous mode (C-mode) and those in recycle mode (R-mode). To intuitively describe the compound effects of salinity variation and concentration polarization on electrical performance of the R-mode RED stack, nonlinear capacity effects (i.e., recovery effect and rate capacity effect) and self-consumed effect are introduced into the proposed model. The derivation and extraction procedures of the proposed model are included. An RED stack prototype with 50 pairs of alternating membranes is constructed for model validation. Various pulsed and constant current discharge experimental tests are performed to validate the accuracy of the proposed model.
URI: https://hdl.handle.net/10356/154079
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2021.3078733
Rights: © 2021 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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