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Study of the heat transfer during the circulation of a secondary refrigerant with a solid-to-liquid phase change.

Etude du transfert de chaleur lors de la circulation dans un échangeur d'un frigoporteur à changement de phase solide-liquide.

Author(s) : PEUVREL C.

Type of monograph: Thesis

Summary

This doctoral thesis for a PhD in Physics aims at using alternative technology in the area of refrigeration using a two-phase secondary refrigerant. This technology will make it possible initially to minimize the refrigerant load in the installation, by affecting it to the task of refrigeration alone. In a second stage it will be possible to transport cold energy in large amounts in its latent form. Generally, these two-phase secondary refrigerants comprise a liquid bearing phase doped with particles containing a solid-liquid phase-change material with a fixed melting temperature (between 0-40°C depending on the type of material). The study concentrates on the use of a two-phase secondary refrigerant composed of ice particles suspended in an aqueous ethanol solution. Extract from the table of contents: general presentation of the use of an ice slurry; thermophysical properties of two-phase mixtures; experimental equipment and test procedures (flow, temperature, pressure speed profile measurements; measurements of the ice fraction in a two-phase mixture; determination based on temperature measurements; temperature profiles; procedure for heat-exchange studies); experimental results with an ice slurry or water-polypropylene spheres (smooth and corrugated-tube heat exchangers; interpretation of results); entropy analysis of the water-ethanol mixture. The thesis can be downloaded on the following website: http://jbedecarrats.free.fr/doc/th_peuvrel.pdf.

Details

  • Original title: Etude du transfert de chaleur lors de la circulation dans un échangeur d'un frigoporteur à changement de phase solide-liquide.
  • Record ID : 2008-2814
  • Languages: French
  • Publication: Université de pau et des pays de l'adour - France/France
  • Publication date: 2003/12
  • Source: Source: 192 p. (21 x 29.7); fig.; phot.; tabl.; 106 ref.; 5 append.

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