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Équation modifiée du transfert de chaleur pour le refroidissement au CO2 surcritique à l'intérieur d'un tube.

Modified heat transfer equation for in-tube supercritical CO2 cooling.

Auteurs : FANG X., XU Y.

Type d'article : Article

Résumé

The cooling heat transfer of supercritical carbon dioxide (CO2) remains an issue unsolved, into which many experimental and formulating investigations were performed. This paper conducts a comprehensive survey and evaluation of the available experimental results and existing correlations for in-tube heat transfer of supercritical CO2 cooling. The 341 experimental heat transfer data of supercritical CO2 cooling from six papers are retrieved and assessed, among which three data sources containing 297 data are chosen for the comparative study of the existing heat transfer correlations and for the development of a new correlation and the rest three containing 44 data are put aside because they cannot be justified. The 13 existing heat transfer correlations are found, and they are evaluated with the 297 experimental data. A new correlation is developed through extensive computer tests based on the 297 experimental data and the evaluation of the existing correlations. The new one happens to be the modified form of the Fang model. It has the mean absolute relative deviation (MARD) of 8.9%, 14.6% lower than the best existing correlation. [Reprinted with permission from Elsevier. Copyright, 2011].

Détails

  • Titre original : Modified heat transfer equation for in-tube supercritical CO2 cooling.
  • Identifiant de la fiche : 30005287
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 31 - n. 14-15
  • Date d'édition : 10/2011
  • DOI : http://dx.doi.org/10.1016/j.applthermaleng.2011.05.037

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