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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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Conference papers
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https://hal.inrae.fr/hal-02586775
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Submitted on : Friday, May 15, 2020 - 11:35:35 AM
Last modification on : Friday, December 10, 2021 - 10:12:53 AM

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  • HAL Id : hal-02586775, version 1
  • IRSTEA : PUB00017940

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S. Marinhas, Anthony Delahaye, Laurence Fournaison, D. Dalmazzone, J.P. Petitet. DSC approach and estimation of the solid fraction of a CO2-hydrate slurry in flow in an experimental loop applied to secondary refrigeration. Fifth International Conference on Gas Hydrates (ICGH 5), Trondheim, NOR, 13-16 juin 2005, 2005, pp.8. ⟨hal-02586775⟩

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