Documents disponibles écrits par cet auteur

Experimental investigation on air-source transcritical CO2 heat pump water heater system at a fixed water inlet temperature / Shouguo Wang in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 701–716 Titre : Experimental investigation on air-source transcritical CO2 heat pump water heater system at a fixed water inlet temperature Titre original : Etude expérimentale sur un système de chauffage d'eau à pompe à chaleur au CO2 transcritique avec une température d'eau fixe à l'entrée Type de document : texte imprimé Auteurs : Shouguo Wang, Auteur ; Hanfei Tuo, Auteur ; Feng Cao, Auteur Année de publication : 2013 Article en page(s) : pp. 701–716 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Transcritical  cycle;  Carbon  dioxide;  Heat  pump;  Pressure;  Simulation Résumé : For clarify main affecting factors on air-source transcritical CO2 heat pump water heaters, and the influence extent of these main affecting factors, at fixed water inlet temperature of 12 °C, an experimental research was conducted on a prototype in a range of ambient temperatures (−15 °C–35 °C) and water outlet temperatures (55 °C–80 °C). Based on the experimental results, effect of water outlet temperatures and ambient temperatures on the optimal discharge pressure and system COP was illustrated, and with change of water outlet temperatures and ambient temperatures, variation of CO2 gas cooler outlet temperatures, evaporating temperatures and other cycle variables was presented and interpreted. According established simulation model, we conducted simulation for the prototype and the cycle respectively adopted another two gas coolers with difference heat transfer surface. As one conclusion, for an established plant, correlation for the optimal discharge pressure as the function of ambient temperatures and water outlet temperatures can be achieved by fitting numerous simulation or experimental results. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200271X [article] Experimental investigation on air-source transcritical CO2 heat pump water heater system at a fixed water inlet temperature = Etude expérimentale sur un système de chauffage d'eau à pompe à chaleur au CO2 transcritique avec une température d'eau fixe à l'entrée [texte imprimé] / Shouguo Wang, Auteur ; Hanfei Tuo, Auteur ; Feng Cao, Auteur . - 2013 . - pp. 701–716. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 701–716 Mots-clés : Transcritical  cycle;  Carbon  dioxide;  Heat  pump;  Pressure;  Simulation Résumé : For clarify main affecting factors on air-source transcritical CO2 heat pump water heaters, and the influence extent of these main affecting factors, at fixed water inlet temperature of 12 °C, an experimental research was conducted on a prototype in a range of ambient temperatures (−15 °C–35 °C) and water outlet temperatures (55 °C–80 °C). Based on the experimental results, effect of water outlet temperatures and ambient temperatures on the optimal discharge pressure and system COP was illustrated, and with change of water outlet temperatures and ambient temperatures, variation of CO2 gas cooler outlet temperatures, evaporating temperatures and other cycle variables was presented and interpreted. According established simulation model, we conducted simulation for the prototype and the cycle respectively adopted another two gas coolers with difference heat transfer surface. As one conclusion, for an established plant, correlation for the optimal discharge pressure as the function of ambient temperatures and water outlet temperatures can be achieved by fitting numerous simulation or experimental results. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200271X

Investigation of the performance of a high-temperature heat pump using parallel cycles with serial heating on the water side / Kai Wang in International journal of refrigeration, Vol. 33 N° 6 (Septembre 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1142-1151 Titre : Investigation of the performance of a high-temperature heat pump using parallel cycles with serial heating on the water side Titre original : Etude sur la performance d'une pompe à chaleur à température élevée employant des cycles parallèles avec chauffage en série du côté eau Type de document : texte imprimé Auteurs : Kai Wang, Auteur ; Feng Cao, Auteur ; Shouguo Wang, Auteur Année de publication : 2010 Article en page(s) : pp. 1142-1151 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Heat  pump  Screw  compressor  High  temperature  Design  Oil  injection  Thermodynamic  cycle  Calculation  Performance  Test-measurement Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : High-temperature heat pumps can be widely utilized for industrial heating as an energy-saving method due to their high condensing temperatures. This paper describes a cycle analysis and experimental study on the performance of a high-temperature heat pump (HTHP) system. The performance comparisons are conducted using performance calculations among the parallel cycles with serial heating on the water side, a two-stage compression cycle and a single-stage cycle. The results show that the performance of the heat pump using parallel cycles with serial heating is the best when the condensing temperature exceeds 75 °C. Based on the cycle analysis, a prototype HTHP using parallel cycles with serial heating on the water side with a heating capacity of 700 kW was built in this study. Also, a screw compressor was modified due to the high-temperature conditions. The measured performance shows that the HTHP can stably provide an outlet water temperature of up to 85 °C with a high coefficient of performance (COP). The experimental results indicate that the average heating capacity and coefficient of performance of the HTHP could be improved significantly in high-temperature conditions due to the parallel cycles with serial heating on the water side and the modified compressor. All the results indicate that the HTHP using parallel cycles and modified compressor with serial heating on the water side is very competitive in industrial heating applications. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000861 [article] Investigation of the performance of a high-temperature heat pump using parallel cycles with serial heating on the water side = Etude sur la performance d'une pompe à chaleur à température élevée employant des cycles parallèles avec chauffage en série du côté eau [texte imprimé] / Kai Wang, Auteur ; Feng Cao, Auteur ; Shouguo Wang, Auteur . - 2010 . - pp. 1142-1151. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1142-1151 Mots-clés : Heat  pump  Screw  compressor  High  temperature  Design  Oil  injection  Thermodynamic  cycle  Calculation  Performance  Test-measurement Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : High-temperature heat pumps can be widely utilized for industrial heating as an energy-saving method due to their high condensing temperatures. This paper describes a cycle analysis and experimental study on the performance of a high-temperature heat pump (HTHP) system. The performance comparisons are conducted using performance calculations among the parallel cycles with serial heating on the water side, a two-stage compression cycle and a single-stage cycle. The results show that the performance of the heat pump using parallel cycles with serial heating is the best when the condensing temperature exceeds 75 °C. Based on the cycle analysis, a prototype HTHP using parallel cycles with serial heating on the water side with a heating capacity of 700 kW was built in this study. Also, a screw compressor was modified due to the high-temperature conditions. The measured performance shows that the HTHP can stably provide an outlet water temperature of up to 85 °C with a high coefficient of performance (COP). The experimental results indicate that the average heating capacity and coefficient of performance of the HTHP could be improved significantly in high-temperature conditions due to the parallel cycles with serial heating on the water side and the modified compressor. All the results indicate that the HTHP using parallel cycles and modified compressor with serial heating on the water side is very competitive in industrial heating applications. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000861