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hal.structure.identifierEcole Superieure de Physique et de Chimie Industrielles de la Ville de Paris [ESPCI Paris]
dc.contributor.authorBEYSENS, Daniel
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGARRABOS, Yves
hal.structure.identifierCentre National d’Études Spatiales [Paris] [CNES]
dc.contributor.authorZAPPOLI, Bernard
dc.contributor.editorLin Chen
dc.contributor.editorYuhiro Iwamoto
dc.date.issued2017
dc.identifier.isbn978-1-5225-2047-4
dc.description.abstractEnIn this chapter is addressed the very particular thermal behavior that supercritical fluids exhibit when nearing their critical point. In this region, supercritical fluids exhibit strong anomalies in their thermodynamic and transport properties. Pressure change associated to a temperature variation leads to a nearly isentropic thermalization of the fluid, the “piston effect”, which leads to a paradoxical “critical speeding-up”. Bulk fluid temperature is uniform, temperature gradients are confined in thermal boundary layers, making the bulk fluid a thermal short-circuit. It follows very particular behavior, as dynamic heat pipes or heat going seemingly backward, in apparent contradiction with the 2nd principle of thermodynamics. Under an acceleration field, thermal convection occurs only in the boundary layers, which paradoxically can enhance the fluid stability or even cool the fluid after a heat pulse. These effects can deeply modify the supercritical fluids thermal behavior in space and energy activities, giving to these effects socio-economic relevance.
dc.language.isoen
dc.publisherIGI Global
dc.publisher.locationHershey (Pa.)
dc.source.titleAdvanced applications of supercritical fluids in energy
dc.title.enThermal effects in near-critical fluids : piston effect and related phenomena
dc.typeChapitre d'ouvrage
dc.identifier.doi10.4018/978-1-5225-2047-4.ch001
dc.subject.halChimie/Matériaux
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.page1-32
bordeaux.title.proceedingAdvanced applications of supercritical fluids in energy
hal.identifierhal-02142713
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02142713v1
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