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dc.contributor.authorArias Montenegro, Francisco Javier
dc.contributor.authorHeras Jiménez, Salvador Augusto de las
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.date.accessioned2019-09-19T12:50:18Z
dc.date.available2021-09-01T00:33:09Z
dc.date.issued2019-09-13
dc.identifier.citationArias, F.J.; De Las Heras, S.A. The use of compliant surfaces for harvesting energy from water streams. "Energy", 2019, vol. 189, 116114, p. 1-6.
dc.identifier.issn0360-5442
dc.identifier.urihttp://hdl.handle.net/2117/168440
dc.description.abstractThe possibility for hydrokinetic energy harvesting from small water streams by using compliant surfaces is considered. The basis of the proposed idea is the deliberate bifurcation of a water stream into two streams separated by a compliant or membrane surface keeping an equalized static pressure in both sides but, however, with a relative velocity between both channels. Then, owing to this relative velocity of the water stream Taylor instabilities appear which set in oscillatory motion the membrane. This motion can be converted into a small electrical output power. Utilizing a linearized flow theory an analytical expression for the attainable power as function of several parameters was derived. Actual experimental investigations were undertaken which show a good agreement with the theoretical predictions. It was found that for a water stream with velocity around 2¿m/s an output power around 30 mW/cm 2 of area of the membrane is attainable. Because large areas can be covered inexpensively by the use of membranes, the concept is worthy to be considered for hydropower harvesting in water flows which are not suitable to be turbined either because a reduced pressure or little depth which prevents the use of turbines. Additional R&D is required in order to arrive at a reliable practical and commercial design
dc.format.extent6 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Energies::Recursos energètics renovables
dc.subject.lcshEnergy harvesting
dc.subject.lcshSewage
dc.subject.otherEnergy harvesting
dc.subject.otherResidual waters
dc.subject.otherWaste waters
dc.titleThe use of compliant surfaces for harvesting energy from water streams
dc.typeArticle
dc.subject.lemacEnergia -- Captació
dc.subject.lemacAigües residuals -- Aprofitament
dc.contributor.groupUniversitat Politècnica de Catalunya. SIC - Sistemes Intel·ligents de Control
dc.identifier.doi10.1016/j.energy.2019.116114
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0360544219318092
dc.rights.accessOpen Access
local.identifier.drac25826144
dc.description.versionPostprint (author's final draft)
local.citation.authorArias, F.J.; De Las Heras, S.A.
local.citation.publicationNameEnergy
local.citation.volume189
local.citation.number116114
local.citation.startingPage1
local.citation.endingPage6


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