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Document IIF

Appoint de chaleur par tube vortex pour améliorer la performance des cycles frigorifiques entrainés par de la chaleur.

Vortex tube heat booster to improve performance of heat driven cooling cycles.

Numéro : pap. n. 299

Auteurs : ZHU J., ELBEL S.

Résumé

Increasing energy costs justify research on how to improve utilization of low-grade energy that is abundantly available as solar energy or as waste heat from many thermodynamic processes. One option is to directly generate cooling through absorption/adsorption or vapor jet ejector cycles. As in the case of power generation cycles, cooling cycle efficiencies would increase if the heat input were available at higher temperature. This paper assesses the feasibility of a novel idea that uses a vortex tube to increase the available temperature levels of low-grade heat sources. The desired temperature increase is achieved by sending a stream of vapor that was heated by the waste heat source through a vortex tube, which further elevates the temperature used in a heat driven ejector cooling cycle. Simulation results show that COP can be increased by 12% with the use of the vortex tube heat booster when the cycle is operating with low entrainment ratio at conditions where baseline performance and COP are low.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Vortex tube heat booster to improve performance of heat driven cooling cycles.
  • Identifiant de la fiche : 30016142
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0299

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