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Étude rhéologique et thermique des coulis mixtes cyclopentane + hydrate de CO2 pour des applications frigorifiques.
Rheological and thermal study of mixed cyclopentane + CO2 Hydrate slurries for refrigeration applications.
Numéro : 0427
Auteurs : CHAMI N., SALEHY Y., CLAIN P., DALMAZZONE D., DELAHAYE A., FOURNAISON L.
Résumé
In order to reduce the amount of primary refrigerant, one solution could be the use of phase change material (PCM) slurries, such as gas hydrate slurries, in secondary loops. Previous studies have shown that cyclopentane (CP) acts as a thermodynamic promoter to form hydrates and to modify the equilibrium conditions toward lower pressure and higher temperature of CO2 hydrates (having one of the higher melting enthalpy: 374 kJ.kg-1). The present work is dedicated to the rheological and thermal study of simple CP hydrate and mixed CP + CO2 hydrate slurries in a temperature-pressure controlled flow loop. For various concentrations of CP in oil-in-water emulsions (3-15wt%), the results showed that the viscosity of these slurries increases with a decreasing shear rate, exhibiting mostly a shear-thinning behaviour. Based on the heating tube method, the thermal characteristics of CP and CP + CO2 hydrate slurries showed their ability to enhance heat transfer coefficients. The application of this secondary fluid can be refrigeration and air conditioning, depending on the temperature set by the operating conditions (pressure and CP composition).
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Détails
- Titre original : Rheological and thermal study of mixed cyclopentane + CO2 Hydrate slurries for refrigeration applications.
- Identifiant de la fiche : 30031608
- Langues : Anglais
- Sujet : Technologie
- Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Date d'édition : 21/08/2023
- DOI : http://dx.doi.org/10.18462/iir.icr.2023.0427
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Indexation
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Characterization of mixed Cp + CO2 h...
- Auteurs : CHAMI N., CLAIN P., OSSWALD V., DELAHAYE A., FOURNAISON L., DALMAZZONE D.
- Date : 01/09/2021
- Langues : Anglais
- Source : 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
- Formats : PDF
Voir la fiche
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Experimental investigation on thermal energy tr...
- Auteurs : PARK J., CHOI S., KANG Y. T.
- Date : 07/12/2020
- Langues : Anglais
- Source : 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
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CO2 hydrates crystallization kinetic...
- Auteurs : OSSWALD V., CLAIN P., DELAHAYE A., FOURNAISON L.
- Date : 31/05/2024
- Langues : Anglais
- Source : 14th IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: Paris France, May 29-31, 2024.
- Formats : PDF
Voir la fiche
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Kinetic study of CO2 hydrate formati...
- Auteurs : OSSWALD V., CLAIN P., DALMAZZONE D., FOURNAISON L.
- Date : 01/09/2021
- Langues : Anglais
- Source : 13rd IIR Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning. Proceedings: (online) Vicenza, Italy, September 1-3, 2021.
- Formats : PDF
Voir la fiche
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Improvement of CO2 hydrate slurry transportatio...
- Auteurs : CLAIN P., BOUFARES A., BENMESBAH F., et al.
- Date : 24/08/2019
- Langues : Anglais
- Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
Voir la fiche