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Article Dans Une Revue Physica A: Statistical and Theoretical Physics Année : 2002

Can heat flow backward? unusual thermal phenomena observed in near-critical fluids

Résumé

A study is presented concerning an experiment under weightlessness. A pure fluid (SF6) is heated near and below its critical point, where liquid coexists with vapor. After the temperature rise, the vapor phase passes well beyond the temperature of the heating walls. This surprising finding is discussed in the light of an adiabatic heat transfer or "Piston effect" and the special geometry of the liquid and vapor. In addition, the shape of the gas-liquid interface is distorted near the solid wall by the thrust of vapor production ("recoil" force), a precursor to the well-known boiling crisis in heat exchanger.
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hal-00818179 , version 1 (01-07-2021)

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Daniel Beysens, Yves Garrabos, Régis Wunenburger, Carole Lecoutre-Chabot. Can heat flow backward? unusual thermal phenomena observed in near-critical fluids. Physica A: Statistical and Theoretical Physics, 2002, 314 (1-4), pp.427-436. ⟨10.1016/S0378-4371(02)01175-5⟩. ⟨hal-00818179⟩
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