Documents disponibles écrits par cet auteur

Simulation research on scroll refrigeration compressor with external cooling / Shuaihui Sun in International journal of refrigeration, Vol. 33 N° 5 (Août 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 5 (Août 2010) . - pp. 897-906 Titre : Simulation research on scroll refrigeration compressor with external cooling Titre original : Simulation d'un compresseur frigorifique à spirale muni de refroidissement externe: recherches Type de document : texte imprimé Auteurs : Shuaihui Sun, Auteur ; Yuanyang Zhao, Auteur ; Liansheng Li, Auteur Année de publication : 2010 Article en page(s) : pp. 897-906 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Scroll  compressor  Modelling  Simulation  Cooling  Heat  Compression  Improvement  Efficiency Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The compression process can approach the isothermal one when compressors are cooled in the compression process, and the compression work can be reduced. The paper presents a special external cooling structure for scroll refrigeration compressor. A mathematical model is established to simulate the compressor. All of boundary conditions in heat transfer model are set to coincide with the real operation conditions as much as possible. The simulation results indicate that the isentropic efficiency is improved by 7.4% and the discharge temperature are reduced by 23 °C when the water of 30 °C flows through the cooling structure. Furthermore, with the simulation results, the details of heat transfer between refrigerant and work chamber are analyzed and figured out. The influence of water temperature, dimension of cooling structure, leakage clearance, rotational speed and pressure ratio on the performances of compressor is discussed. And some useful results can be used to enhance the effect of water cooling and the performance of compressors. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000514 [article] Simulation research on scroll refrigeration compressor with external cooling = Simulation d'un compresseur frigorifique à spirale muni de refroidissement externe: recherches [texte imprimé] / Shuaihui Sun, Auteur ; Yuanyang Zhao, Auteur ; Liansheng Li, Auteur . - 2010 . - pp. 897-906. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 5 (Août 2010) . - pp. 897-906 Mots-clés : Scroll  compressor  Modelling  Simulation  Cooling  Heat  Compression  Improvement  Efficiency Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The compression process can approach the isothermal one when compressors are cooled in the compression process, and the compression work can be reduced. The paper presents a special external cooling structure for scroll refrigeration compressor. A mathematical model is established to simulate the compressor. All of boundary conditions in heat transfer model are set to coincide with the real operation conditions as much as possible. The simulation results indicate that the isentropic efficiency is improved by 7.4% and the discharge temperature are reduced by 23 °C when the water of 30 °C flows through the cooling structure. Furthermore, with the simulation results, the details of heat transfer between refrigerant and work chamber are analyzed and figured out. The influence of water temperature, dimension of cooling structure, leakage clearance, rotational speed and pressure ratio on the performances of compressor is discussed. And some useful results can be used to enhance the effect of water cooling and the performance of compressors. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000514