Partager

Document IIF

Transfert de chaleur de refroidissement et chute de pression du CO2 supercritique dans des micro-canaux ondulés présentant des crêtes et des creux homogènes et opposés.

Cooling heat transfer and pressure drop of supercritical CO2 in wavy microchannels with consistent and opposite crests and troughs.

Auteurs : LEI X., CHEN Z.

Type d'article : Article, Article de la RIF

Résumé

A numerical study on cooling heat transfer and pressure drop of supercritical CO2 in horizontal wavy microchannels with consistent crests and troughs (WMCCT) and wavy microchannels with opposite crests and troughs (WMOCT) was conducted. The aim is to provide reference for optimal design in trans-critical CO2 gas cooler equipment. The influence of the channel structure on heat transfer coefficient, pressure drop, buoyancy effect, flow fields and overall thermal performance was analyzed. WMOCT and WMCCT show great advantages in heat transfer performance, while get slightly larger pressure loss punishment when compared with straight microchannel (SM). It is worthy to note that both heat transfer coefficient and pressure drop increase with increased amplitude or decreased wavelength in both WMOCT and WMCCT, which is particularly evident in WMOCT. Furthermore, the analyses carried out identified an optimal channel structure that could improve the overall thermal performance of microchannel gas coolers.

Documents disponibles

Format PDF

Pages : 64-81

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Cooling heat transfer and pressure drop of supercritical CO2 in wavy microchannels with consistent and opposite crests and troughs.
  • Identifiant de la fiche : 30027199
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 109
  • Date d'édition : 01/2020
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2019.07.015

Liens


Voir d'autres articles du même numéro (20)
Voir la source

Indexation