 Practical limit of energy production from seawater by full-scale pressure retarded osmosisMinseok Kim and Suhan Kim Energy, 2018, vol. 158, issue C, 373-382 Abstract: Pressure retarded osmosis (PRO) produces energy using the salinity gradient between two solutions (draw solution (DS) and feed solution (FS)). Net energy production (NEP) of PRO was analyzed using a module-scale model developed in this work. The NEP analysis determines net energy from PRO by the difference between energy production by turbine and energy consumption by DS, FS, and booster pumps. Especially, the effects of system capacity and membrane fouling on NEP are investigated using a module-scale modeling approach for the first time. The maximum net specific energy (NSE) per PRO system capacity (sum of DS and FS flow rates) is close to 0.1 kWh/m3 without pretreatments. The maximum NSE decreases at smaller system capacities, and it becomes around 0.03 kWh/m3 from a PRO system with 520 m3/d as capacity. NSE from seawater decreases in the presence of membrane fouling, but it remains positive under the severe fouling condition where water flux decreases by 32% if the system capacity is large enough to have efficient pumps and turbines. Keywords: Pressure retarded osmosis (PRO); Module-scale model; Seawater; Net specific energy (NSE); System capacity; Fouling (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:158:y:2018:i:c:p:373-382 DOI: 10.1016/j.energy.2018.06.042 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
Is your work missing from RePEc? Here is how to contribute.
Questions or problems? Check the EconPapers FAQ or send mail to .
EconPapers is hosted by the
School of Business at Örebro University.