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dc.contributor.authorBui, Tri Quang
dc.contributor.authorMagnussen, Ole-Petter
dc.contributor.authorCao, Vinh Duy
dc.contributor.authorWang, Wei
dc.contributor.authorKjøniksen, Anna-Lena
dc.contributor.authorAaker, Olav
dc.date.accessioned2021-08-11T08:41:11Z
dc.date.available2021-08-11T08:41:11Z
dc.date.created2021-06-08T14:37:53Z
dc.date.issued2021
dc.identifier.issn0360-5442
dc.identifier.urihttps://hdl.handle.net/11250/2767315
dc.description.abstractEfficient harvesting of the mixing energy from the salinity gradient between sea and river water remains a challenge. Recently, utilization of the swelling/shrinking properties of hydrogels has been explored as a new means for extracting this energy. However, former investigations are mainly limited to examining the performance of the hydrogels when lifting applied weights, and calculating the energy that could potentially be extracted. In this study, we demonstrate a novel osmotic engine with a mechanical energy transmission prototype, which can convert and store the green mixing energy in a form that can be utilized to perform mechanical work. The osmotic engine includes a cylinder containing the hydrogel, an oil-hydraulic cylinder and a hydraulic accumulator. The lifting energy from the hydrogel is transferred to the oil-hydraulic cylinder through a lever, which acts as a pump and accumulate the hydraulic oil under high pressure in the hydraulic accumulator. The system was tested with a hydrogel of poly(acrylic acid) semi-interpenetrated with poly(4-styrenessulfonic acid-co-maleic acid) sodium. This hydrogel produced up to 36 J per shrinking/swelling cycle, and exhibited an efficiency of 0.53% at optimum conditions.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleOsmotic engine converting energy from salinity difference to a hydraulic accumulator by utilizing polyelectrolyte hydrogelsen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2021 The Author(s).en_US
dc.source.articlenumber121055en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.doi10.1016/j.energy.2021.121055
dc.identifier.cristin1914590
dc.source.journalEnergyen_US
dc.identifier.citationEnergy. 2021, 232, 121055.en_US
dc.source.volume232en_US


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