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Research on air-source heat pump coupled with economized vapor injection scroll compressor and ejector / Xu Shuxue in International journal of refrigeration, Vol. 34 N° 7 (Novembre 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 7 (Novembre 2011) . - pp. 1587-1595 Titre : Research on air-source heat pump coupled with economized vapor injection scroll compressor and ejector Titre original : Recherches sur une pompe à chaleur air-eau couplée à un compresseur à spirale et un éjecteur à injection de vapeur muni d'un économiseur Type de document : texte imprimé Auteurs : Xu Shuxue, Auteur ; Ma Guoyuan, Auteur Année de publication : 2011 Article en page(s) : pp. 1587-1595 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Heat  pump  Air-source  Scroll  compressor  Injection  Ejector  Design  Calculation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The performance of the heat pump can be improved further when running under low temperature conditions when an ejector is used in a heat pump system coupled with economized vapor injection (EVI) scroll compressor. In this paper, the design method of the heat pump system with ejector (EVIe) is presented, and the process for designing the heat pump with ejector has been summarized. The optimal location of the vapor injection inlets is at the place where the vapor can inject into the working chambers when they just be closed. The reasonable value for the entrainment ratio u of the ejector is between 0.1 and 0.2. One prototype heat pump was designed under the condition of the evaporation temperature of −20 °C, and an experimental setup was established to test the prototype. The measured results demonstrated that the heating EER of the heat pump system with ejector could reach about 4% higher than that of the system without ejector when the heating capacity remained nearly constant. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001192 [article] Research on air-source heat pump coupled with economized vapor injection scroll compressor and ejector = Recherches sur une pompe à chaleur air-eau couplée à un compresseur à spirale et un éjecteur à injection de vapeur muni d'un économiseur [texte imprimé] / Xu Shuxue, Auteur ; Ma Guoyuan, Auteur . - 2011 . - pp. 1587-1595. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 7 (Novembre 2011) . - pp. 1587-1595 Mots-clés : Heat  pump  Air-source  Scroll  compressor  Injection  Ejector  Design  Calculation Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : The performance of the heat pump can be improved further when running under low temperature conditions when an ejector is used in a heat pump system coupled with economized vapor injection (EVI) scroll compressor. In this paper, the design method of the heat pump system with ejector (EVIe) is presented, and the process for designing the heat pump with ejector has been summarized. The optimal location of the vapor injection inlets is at the place where the vapor can inject into the working chambers when they just be closed. The reasonable value for the entrainment ratio u of the ejector is between 0.1 and 0.2. One prototype heat pump was designed under the condition of the evaporation temperature of −20 °C, and an experimental setup was established to test the prototype. The measured results demonstrated that the heating EER of the heat pump system with ejector could reach about 4% higher than that of the system without ejector when the heating capacity remained nearly constant. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710001192