Document IIF
Tubes vortex utilisés comme détendeurs dans des systèmes à compression de vapeur.
Vortex tubes used as expansion device in vapor compression systems.
Numéro : pap. ID43
Auteurs : ZHU J., MOHIUDDIN M., ELBEL S.
Résumé
The vortex tube is an intriguing device which can separate an incoming high pressure fluid stream into two low pressure fluid streams with different temperatures. The internal flow separation is achieved without any moving parts, which makes the device robust and inexpensive to design and manufacture. Commercially available vortex tubes are almost exclusively used for spot cooling in industrial applications and use compressed air as the working fluid. Fluids such as carbon dioxide which display substantial throttling losses justify research on expansion devices that can recover expansion work. Most of the work on vortex tubes used for refrigeration has been on numerical studies, and many of them predict very optimistic energy efficiency improvements. However, the operating conditions for vortex tube in these cycles are usually not possible to produce significant thermal separation as expected. In this paper, vortex tube thermal separation performance for air and a more conventional low-pressure refrigerant is provided. Suitable vortex tube operating conditions have been identified and actual work recovery effects have been demonstrated experimentally. Based on this knowledge, novel vortex tube cycles are proposed which are able to utilize the demonstrated improvement potentials of vortex tube when applied to vapor compression systems.
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 tubes used as expansion device in vapor compression systems.
- Identifiant de la fiche : 30013163
- Langues : Anglais
- Source : 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
- Date d'édition : 02/08/2014
Liens
Voir d'autres communications du même compte rendu (119)
Voir le compte rendu de la conférence
Indexation
-
A fresh look at vortex tubes used as expansion ...
- Auteurs : MOHIUDDIN M., ELBEL S.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
-
Experimental investigation on a -40 °C low-temp...
- Auteurs : LU Y., BAI T., YU J.
- Date : 10/2020
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 118
- Formats : PDF
Voir la fiche
-
Energy savings in vapour compression refrigerat...
- Auteurs : GRANRYD E.
- Date : 22/06/1992
- Langues : Anglais
Voir la fiche
-
Modelling of straight and coiled capillary tube...
- Auteurs : KUMAR DABAS J.
- Date : 27/07/2018
- Langues : Anglais
- Source : Proceedings of the International Conference on Emerging Technologies for Sustainable and Intelligent HVAC&R Systems, Kolkata, July 27-28 2018.
- Formats : PDF
Voir la fiche
-
Non-linear predictive control of a vapour compr...
- Auteurs : LEDUCQ D., GUILPART J., TRYSTRAM G.
- Date : 08/2006
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 29 - n. 5
- Formats : PDF
Voir la fiche