Effet du sous-refroidissement du condenseur sur la performance des systèmes à compression de vapeur : étude expérimentale et numérique.
Effect of condenser subcooling of the performance of vapor compression systems: experimental and numerical investigation.
Numéro : pap. 2512
Auteurs : POTTKER G., HRNJAK P.
Résumé
This paper presents a theoretical and experimental analysis of the effect of condenser subcooling on the performance of vapor-compression systems. It is shown that, as condenser subcooling increases, the COP reaches a maximum as a result of a trade-off between increasing refrigerating effect and specific compression work. The thermodynamic properties associated with the relative increase in refrigerating effect, i.e. liquid specific heat and latent heat of vaporization, are dominant to determine the maximum COP improvement with condenser subcooling. Refrigerants with large latent heat of vaporization tend to benefit less from condenser subcooling. For a typical AC system, numerical results indicate that the R1234yf would benefit the most from condenser subcooling in comparison to R410A, R134a and R717 due to its smaller latent heat of vaporization. On the other hand, the value of COP maximizing subcooling does not seem to be a strong function of thermodynamic properties. Experimental results comparing R1234yf and R134a confirmed the trends observed during the numerical study. For a given operating condition, the system COP increased up to 18% for R1234yf and only 9% for R134a.
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Détails
- Titre original : Effect of condenser subcooling of the performance of vapor compression systems: experimental and numerical investigation.
- Identifiant de la fiche : 30006369
- Langues : Anglais
- Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
- Date d'édition : 16/07/2012
Liens
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Indexation
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Effect of the condenser subcooling on the perfo...
- Auteurs : POTTKER G., HRNJAK P.
- Date : 02/2015
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 50
- Formats : PDF
Voir la fiche
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Designated vs. non-designated areas for condens...
- Auteurs : POTTKER G., HRNJAK P.
- Date : 16/07/2012
- Langues : Anglais
- Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
- Formats : PDF
Voir la fiche
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Experimental analysis of the internal heat exch...
- Auteurs : NAVARRO-ESBRÍ J., MOLÉS F., BARRAGÁN-CERVERA A.
- Date : 09/2013
- Langues : Anglais
- Source : Applied Thermal Engineering - vol. 59 - n. 1-2
Voir la fiche
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Experimental investigation of the effect of con...
- Auteurs : POTTKER G., HRNJAK P.
- Date : 02/2015
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 50
- Formats : PDF
Voir la fiche
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Evaluation of optimal subcooling in subcritical...
- Auteurs : PITARCH M., HERVÁS-BLASCO E., NAVARRO-PERIS E., et al.
- Date : 06/2017
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 78
- Formats : PDF
Voir la fiche