Développement d'une corrélation relative au transfert de chaleur à l'intérieur du cylindre pour des compresseurs à piston.
Development of an in-cylinder heat transfer correlation for reciprocating compressors.
Numéro : pap. 1342
Auteurs : DISCONZI F. P., PEREIRA E. L. L., DESCHAMPS C. J.
Résumé
The gas superheating that takes place throughout the suction system and inside the cylinder of reciprocating compressors adversely affects their overall efficiency. Simulation models adopted in the design of reciprocating compressors are generally based on lumped formulation and rely on empirical correlations for different physical phenomena, including the gas-to-wall heat transfer in the cylinder. The present paper reports a numerical study of heat transfer inside the cylinder of a simplified geometry of reciprocating compressor, considering the effect of fluid flow through the valves. Predictions for the instantaneous heat transfer at the walls are obtained for actual operating conditions and compared with estimates given by correlations commonly adopted for reciprocating compressors. It is shown that the increase of heat transfer during the suction and discharge processes is not properly accounted for by such correlations. Based on the predictions, a new correlation for the in-cylinder heat transfer is put forward and tested in different operating conditions.
Documents disponibles
Format PDF
Pages : 10 p.
Disponible
Prix public
20 €
Prix membre*
15 €
* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)
Détails
- Titre original : Development of an in-cylinder heat transfer correlation for reciprocating compressors.
- Identifiant de la fiche : 30007593
- Langues : Anglais
- Source : 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
- Date d'édition : 16/07/2012
Liens
Voir d'autres communications du même compte rendu (82)
Voir le compte rendu de la conférence
Indexation
-
Thèmes :
Compresseurs;
Transfert de chaleur - Mots-clés : Aspiration; Transfert de chaleur; Surchauffe; Simulation; Cylindre; Compresseur à piston
-
Modelling temperatures in high speed compressor...
- Auteurs : LIU Z., SOEDEL W.
- Date : 14/07/1992
- Langues : Anglais
Voir la fiche
-
Numerical analysis of heat transfer inside the ...
- Auteurs : PEREIRA E. L. L., DESCHAMPS C. J., RIBAS F. A. Jr
- Date : 12/07/2010
- Langues : Anglais
- Source : 2010 Purdue Conferences. 20th International Compressor Engineering Conference at Purdue.
- Formats : PDF
Voir la fiche
-
Separation of suction gas from the discharge ga...
- Auteurs : ROY P. K., DI FLORA M. A.
- Date : 14/07/1992
- Langues : Anglais
Voir la fiche
-
Predicting the suction gas superheating in reci...
- Auteurs : LACERDA J. F., TAKEMORI C. K.
- Date : 14/07/2014
- Langues : Anglais
- Source : 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
- Formats : PDF
Voir la fiche
-
An assessment of modelling approaches for predi...
- Auteurs : DISCONZI F. P., PEREIRA E. L., DESCHAMPS C. J.
- Date : 21/08/2011
- Langues : Anglais
- Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Formats : PDF
Voir la fiche