Résumé
An economical, fixed geometry, bypass orifice was invented to control more precisely the refrigerant flow in an inverter heat pump system. Flow characteristics of the bypass orifice were investigated as a function of orifice geometry and operating conditions. Experimental results of bypass orifices were compared with those of capillary tubes. The bypass orifice showed the best flow trend as a function of frequency: the flow slope of the bypass orifice with respect to frequency was the highest among the orifice, capillary, and bypass orifice. The performance of an inverter heat pump with a bypass orifice and then a capillary tube was measured with a variation of frequency in the psychrometric calorimeter. It was observed that the performance of the inverter heat pump was enhanced with the application of the bypass orifice in the system instead of a capillary tube. The improvement of COP in an inverter heat pump with a bypass orifice versus the capillary tube was prevalent at the low frequency region.
Documents disponibles
Format PDF
Pages : 417-427
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 : Experimental study on the performance of an inverter heat pump with a bypass orifice.
- Identifiant de la fiche : 2001-2929
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 24 - n. 5
- Date d'édition : 08/2001
Liens
Voir d'autres articles du même numéro (6)
Voir la source
Indexation
- Thèmes : Techniques des pompes à chaleur
- Mots-clés : Vitesse variable; Conception; Pompe à chaleur; Optimisation; Détendeur; Conditionnement d'air; Compresseur
-
STEADY-STATE REFRIGERANT FLOW AND AIR FLOW CONT...
- Auteurs : MILLER W. A.
- Date : 1987
- Langues : Anglais
Voir la fiche
-
NEW TESTING AND RATING PROCEDURES FOR SEASONAL ...
- Auteurs : ERBS D. G., BULLOCK C. E., VOORHIS R. J.
- Date : 1986
- Langues : Anglais
Voir la fiche
-
Heat pumps replace electrical heating.
- Auteurs : THIEMANN A.
- Date : 06/2009
- Langues : Anglais
- Source : REHVA Journal - vol. 46 - n. 3
Voir la fiche
-
A variable-speed ground-source heat pump.
- Auteurs : KAVANAUGH S. P., FALLS R. S., PARKER J. K.
- Date : 1994
- Langues : Anglais
- Source : ASHRAE Transactions 1994.
Voir la fiche
-
Experimental study of electronic expansion valv...
- Auteurs : WANG F., WU W., ZHU Q., LI K., ZHANG H.
- Date : 05/2023
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 149
- Formats : PDF
Voir la fiche