Assessment of Data Capture Conditions Effect on Reverse Electrodialysis Process Using a DC Electronic Load

Jesus Nahum Hernandez-Perez, Marco Antonio Hernández-Nochebuena, Jéssica González-Scott, Rosa de Guadalupe González-Huerta, José Luis Reyes-Rodríguez and Alfredo Ortiz ()
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Jesus Nahum Hernandez-Perez: Instituto Politécnico Nacional—ESIQIE, Laboratorio de Electroquímica, UPALM, Mexico City 07738, Mexico
Marco Antonio Hernández-Nochebuena: Instituto Mexicano del Transporte, Pedro Escobedo 76703, Mexico
Jéssica González-Scott: Instituto Politécnico Nacional—ESIQIE, Laboratorio de Electroquímica, UPALM, Mexico City 07738, Mexico
Rosa de Guadalupe González-Huerta: Instituto Politécnico Nacional—ESIQIE, Laboratorio de Electroquímica, UPALM, Mexico City 07738, Mexico
José Luis Reyes-Rodríguez: Instituto Politécnico Nacional—ESIQIE, Laboratorio de Electroquímica, UPALM, Mexico City 07738, Mexico
Alfredo Ortiz: Department of Chemical and Biomolecular Engineering, Universidad de Cantabria, Av. Los Castros 46, 39005 Santander, Spain

Energies, 2023, vol. 16, issue 21, 1-21

Abstract: Reverse electrodialysis (RED), an emerging membrane-based technology, harnesses salinity gradient energy for sustainable power generation. Accurate characterization of electrical parameters in RED stacks is crucial to monitoring its performance and exploring possible applications. In this study, a DC electronic load module (DCELM) is implemented in a constant current condition (CC mode) for characterization of lab scale RED process, using a RED prototype in-house designed and manufactured (RU1), at different data capture setups (DCS), on which the total number of steps for data capture ( NS ) and the number of measurements per step ( ρ ) are the parameters that were modified to study their effect on obtained electrical parameters in RED. NS of 10, 50, and 100 and ρ of 10 and 20 were used with this purpose. The accuracy of resulting current and voltage steps can be enhanced by increasing NS and ρ values, and according to obtained results, the higher accuracy of resulting output current and voltage steps, with low uncertainty of the average output steps (AOS) inside the operational region of power curve, was obtained using a DCS of NS = 100 and ρ = 20. The developed DCELM is a low-cost alternative to commercial electronic load devices, and the proposed methodology in this study represents an adaptative and optimizable CC mode characterization of RED process. The results obtained in this study suggest that data capture conditions have a direct influence of RED performance, and the accuracy of electrical parameters can be improved by optimizing the DCS parameters, according to the required specifications and the scale of RED prototypes.

Keywords: salinity gradient energy; reverse electrodialysis; red characterization; power production (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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