Theoretical power density from salinity gradients using reverse electrodialysis

D.A. Vermaas, E. Guler, M. Saakes, K. Nijmeijer

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

121 Citaten (Scopus)

Samenvatting

Reverse electrodialysis (RED) is a technology to generate power from mixing waters with different salinity. The net power density (i.e. power per membrane area) is determined by 1) the membrane potential, 2) the ohmic resistance, 3) the resistance due to changing bulk concentrations, 4) the boundary layer resistance and 5) the power required to pump the feed water. Previous power density estimations often neglected the latter three terms. This paper provides a set of analytical equations to estimate the net power density obtainable from RED stacks with spacers and RED stacks with profiled membranes. With the current technology, the obtained maximum net power density is calculated at 2.7 W/m2. Higher power densities could be obtained by changing the cell design, in particular the membrane resistance and the cell length. Changing these parameters one and two orders of magnitude respectively, the calculated net power density is close to 20 W/m2.

Originele taal-2Engels
TitelEnergy Procedia
UitgeverijElsevier Bedrijfsinformatie
Pagina's170-184
Aantal pagina's15
Volume20
ISBN van geprinte versie9781627484299
DOI's
StatusGepubliceerd - 2012
Extern gepubliceerdJa
EvenementTechnoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012 - Trondheim, Noorwegen
Duur: 16 apr 201218 apr 2012

Congres

CongresTechnoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012
Land/RegioNoorwegen
StadTrondheim
Periode16/04/1218/04/12

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