DSC approach and estimation of the solid fraction of a CO2 hydrate slurry in flow in an experimental loop applied to secondary refrigeration

Abstract : The present work investigates the suitability of CO2 hydrate for a use as phase change material in two-phase secondary refrigeration. Unlike the generation of the classical two-phase refrigerants, power limited by mechanical parts, hydrate slurry production has the advantage of being performed using a nonmechanical process. Nevertheless, in order to be efficient, it needs to fulfil two major conditions: a high latent heat of melting of the solid phase and appropriate flowing conditions of the slurry. Consequently, in a first part, multi-cycle DSC (Differential Scanning Calorimetry) measurements were performed and confirmed a value of CO2-hydrate dissociation enthalpy of approximately 500 kJ.kgH2O-1, one and a half higher than that of ice (333 kJ.kgH2O-1). In a second part, an experimental loop made it possible to study the CO2 hydrates in suspension in a carrying liquid and estimate the solid fraction of the slurry.
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Contributor : Didier Dalmazzone <>
Submitted on : Thursday, July 23, 2015 - 3:50:07 PM
Last modification on : Tuesday, September 10, 2019 - 11:54:03 AM

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Sandrine Marinhas, Anthony Delahaye, Laurence Fournaison, Didier Dalmazzone, Walter Fürst, et al.. DSC approach and estimation of the solid fraction of a CO2 hydrate slurry in flow in an experimental loop applied to secondary refrigeration. 5th International Conference on Gas Hydrates (ICGH 2005), Jun 2005, Trondheim, Norway. pp.8. ⟨hal-01179948⟩

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