Documents disponibles écrits par cet auteur

Experimental investigation on a fluidized-bed adsorber/desorber for the adsorption refrigeration system / Q. Wang in International journal of refrigeration, Vol. 35 N° 3 (Mai 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 694–700 Titre : Experimental investigation on a fluidized-bed adsorber/desorber for the adsorption refrigeration system Titre original : Etude expérimentale sur un adsorbeur / désorbeur à lit fluidisé pour un système frigorifique à adsorption Type de document : texte imprimé Auteurs : Q. Wang, Auteur ; X. Gao, Auteur ; J.Y. Xu, Auteur Année de publication : 2012 Article en page(s) : pp. 694–700 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Adsorption  Refrigeration  Experiment  Fluidization  Refrigerant  Specific  cooling  power Résumé : This paper proposed and designed a fluidized-bed adsorber/desorber which can be used in the adsorption refrigeration system in place of the conventional fixed-bed one. An experimental setup was built to investigate the performance of the fluidized-bed absorber/desorber and compare with that of the fixed-bed one using the working pair of activated carbon and R134a. The experimental results with 2 kg activated carbon show that the heat and mass transfer can be greatly enhanced either in adsorption or desorption in the proposed fluidized-bed adsorber/desorber The experimental results with 3 kg activated carbon show the similar enhancement, but the enhancement with 4 kg activated carbon was weakened either in adsorption or desorption due to the incomplete fluidization of the activated carbon. By way of the new approach, the poor heat and mass transfer in the conventional fixed-bed absorber/desorber can be overcome and the SCP of the adsorption refrigerator can be expected to be greatly improved accordingly. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001393 [article] Experimental investigation on a fluidized-bed adsorber/desorber for the adsorption refrigeration system = Etude expérimentale sur un adsorbeur / désorbeur à lit fluidisé pour un système frigorifique à adsorption [texte imprimé] / Q. Wang, Auteur ; X. Gao, Auteur ; J.Y. Xu, Auteur . - 2012 . - pp. 694–700. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 3 (Mai 2012) . - pp. 694–700 Mots-clés : Adsorption  Refrigeration  Experiment  Fluidization  Refrigerant  Specific  cooling  power Résumé : This paper proposed and designed a fluidized-bed adsorber/desorber which can be used in the adsorption refrigeration system in place of the conventional fixed-bed one. An experimental setup was built to investigate the performance of the fluidized-bed absorber/desorber and compare with that of the fixed-bed one using the working pair of activated carbon and R134a. The experimental results with 2 kg activated carbon show that the heat and mass transfer can be greatly enhanced either in adsorption or desorption in the proposed fluidized-bed adsorber/desorber The experimental results with 3 kg activated carbon show the similar enhancement, but the enhancement with 4 kg activated carbon was weakened either in adsorption or desorption due to the incomplete fluidization of the activated carbon. By way of the new approach, the poor heat and mass transfer in the conventional fixed-bed absorber/desorber can be overcome and the SCP of the adsorption refrigerator can be expected to be greatly improved accordingly. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001393

A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks / Q. Wang in International journal of refrigeration, Vol. 35 N° 1 (Janvier 2012) 

Public ISBD [article]  in International journal of refrigeration > Vol. 35 N° 1 (Janvier 2012) . - pp. 7–26 Titre : A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks Titre original : Application des matériaux carbonés et des composites à matrice de carbone pour les échangeurs de chaleurs et les puits thermiques: synthèse Type de document : texte imprimé Auteurs : Q. Wang, Auteur ; X.H. Han, Auteur ; Y. Park, Auteur Année de publication : 2012 Article en page(s) : pp. 7–26 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Carbonaceous  material  Carbon  matrix  composite  Graphite  Heat  exchanger  Heat  sink  HVAC&R Résumé : Carbonaceous materials and carbon matrix composites (CAMCs) have potential to be used in heat exchangers and heat sinks for a number of thermal management applications related to HVAC&R systems, especially in high-temperature and corrosive environments. Recent developments in carbonaceous materials, such as new, natural graphite, carbon foam, carbon nanotubes, and CAMCs, open opportunities for new heat exchanger designs for compact and lightweight applications. The property data of various monolithic carbonaceous materials and CAMCs and their applications in liquid-to-liquid heat exchangers, liquid-to-gas heat exchangers, gas-to-gas heat exchangers and heat sinks are reviewed in this paper. While it is clear that these materials do hold promise for use in the construction of heat exchangers in different applications, additional research is still required in material properties, life-time behavior, structural design and manufacturing cost reduction. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002179 [article] A review on application of carbonaceous materials and carbon matrix composites for heat exchangers and heat sinks = Application des matériaux carbonés et des composites à matrice de carbone pour les échangeurs de chaleurs et les puits thermiques: synthèse [texte imprimé] / Q. Wang, Auteur ; X.H. Han, Auteur ; Y. Park, Auteur . - 2012 . - pp. 7–26. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 35 N° 1 (Janvier 2012) . - pp. 7–26 Mots-clés : Carbonaceous  material  Carbon  matrix  composite  Graphite  Heat  exchanger  Heat  sink  HVAC&R Résumé : Carbonaceous materials and carbon matrix composites (CAMCs) have potential to be used in heat exchangers and heat sinks for a number of thermal management applications related to HVAC&R systems, especially in high-temperature and corrosive environments. Recent developments in carbonaceous materials, such as new, natural graphite, carbon foam, carbon nanotubes, and CAMCs, open opportunities for new heat exchanger designs for compact and lightweight applications. The property data of various monolithic carbonaceous materials and CAMCs and their applications in liquid-to-liquid heat exchangers, liquid-to-gas heat exchangers, gas-to-gas heat exchangers and heat sinks are reviewed in this paper. While it is clear that these materials do hold promise for use in the construction of heat exchangers in different applications, additional research is still required in material properties, life-time behavior, structural design and manufacturing cost reduction. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711002179

Study on the effect of corrosion on the tensile behavior of an AZ91 alloy / Q. Wang in Materials and corrosion, Vol. 61 N° 3 (Mars 2010) 

Public ISBD [article]  in Materials and corrosion > Vol. 61 N° 3 (Mars 2010) . - pp. 222–228 Titre : Study on the effect of corrosion on the tensile behavior of an AZ91 alloy Type de document : texte imprimé Auteurs : Q. Wang, Auteur ; Y. H. Liu, Auteur ; L. N. Zhang, Auteur Année de publication : 2010 Article en page(s) : pp. 222–228 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : AZ91  magnesium  alloy;  corrosion  residual  strength;  estimation;  fracture Résumé : The effect of corrosion on the tensile behavior of an as-cast AZ91 alloy was investigated via systematical experiments. The corrosion residual strength of the AZ91 magnesium alloy is approximately negative linear dependent on the extreme depth of corrosion pit, which was quantitatively obtained by the corrosion morphology analysis and the statistic analysis. Experimental results reveal that the corrosion residual strength of the AZ91 magnesium alloy dropped quickly in the first 40 h due to the initiation and development of the corrosion pit and subsequently decreased slowly as a result of the development of the corrosion pit encountered the β phase. The β phase at the grain boundary of the primary α phase acts as an effective barrier to prevent the development of the corrosion pit into the alloy matrix and thus remarkably prevents the drop of the corrosion residual strength. In general, the variation of the corrosion residual strength exhibits an exponential decay regulation within the testing time. Consequently, the empirical prediction of the corrosion residual strength was given with regard to the variation of the corrosion residual strength varied with the immersion time. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905317/abstract [article] Study on the effect of corrosion on the tensile behavior of an AZ91 alloy [texte imprimé] / Q. Wang, Auteur ; Y. H. Liu, Auteur ; L. N. Zhang, Auteur . - 2010 . - pp. 222–228. Génie mécanique Langues : Anglais (eng) in Materials and corrosion > Vol. 61 N° 3 (Mars 2010) . - pp. 222–228 Mots-clés : AZ91  magnesium  alloy;  corrosion  residual  strength;  estimation;  fracture Résumé : The effect of corrosion on the tensile behavior of an as-cast AZ91 alloy was investigated via systematical experiments. The corrosion residual strength of the AZ91 magnesium alloy is approximately negative linear dependent on the extreme depth of corrosion pit, which was quantitatively obtained by the corrosion morphology analysis and the statistic analysis. Experimental results reveal that the corrosion residual strength of the AZ91 magnesium alloy dropped quickly in the first 40 h due to the initiation and development of the corrosion pit and subsequently decreased slowly as a result of the development of the corrosion pit encountered the β phase. The β phase at the grain boundary of the primary α phase acts as an effective barrier to prevent the development of the corrosion pit into the alloy matrix and thus remarkably prevents the drop of the corrosion residual strength. In general, the variation of the corrosion residual strength exhibits an exponential decay regulation within the testing time. Consequently, the empirical prediction of the corrosion residual strength was given with regard to the variation of the corrosion residual strength varied with the immersion time. En ligne : http://onlinelibrary.wiley.com/doi/10.1002/maco.200905317/abstract