Abstract
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.
| Original language | English |
|---|---|
| Title of host publication | Energy Procedia |
| Publisher | Elsevier Bedrijfsinformatie |
| Pages | 170-184 |
| Number of pages | 15 |
| Volume | 20 |
| ISBN (Print) | 9781627484299 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
| Event | Technoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012 - Trondheim, Norway Duration: 16 Apr 2012 → 18 Apr 2012 |
Conference
| Conference | Technoport 2012 - Sharing Possibilities and 2nd Renewable Energy Research Conference, RERC 2012 |
|---|---|
| Country | Norway |
| City | Trondheim |
| Period | 16/04/12 → 18/04/12 |
Fingerprint
Keywords
- Boundary layer
- Ion exchange membranes
- Profiled membranes
- Reverse electrodialysis
- Salinity gradient energy
- Spacers
Cite this
}
Theoretical power density from salinity gradients using reverse electrodialysis. / Vermaas, D.A.; Guler, E.; Saakes, M.; Nijmeijer, K.
Energy Procedia. Vol. 20 Elsevier Bedrijfsinformatie, 2012. p. 170-184.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
TY - GEN
T1 - Theoretical power density from salinity gradients using reverse electrodialysis
AU - Vermaas, D.A.
AU - Guler, E.
AU - Saakes, M.
AU - Nijmeijer, K.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
KW - Boundary layer
KW - Ion exchange membranes
KW - Profiled membranes
KW - Reverse electrodialysis
KW - Salinity gradient energy
KW - Spacers
UR - http://www.scopus.com/inward/record.url?scp=84872680228&partnerID=8YFLogxK
U2 - 10.1016/j.egypro.2012.03.018
DO - 10.1016/j.egypro.2012.03.018
M3 - Conference contribution
AN - SCOPUS:84872680228
SN - 9781627484299
VL - 20
SP - 170
EP - 184
BT - Energy Procedia
PB - Elsevier Bedrijfsinformatie
ER -