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Testing and design of a microchannel heat exchanger with multiple plates / Haishan Cao in Industrial & engineering chemistry research, Vol. 48 N° 9 (Mai 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4535–4541 Titre : Testing and design of a microchannel heat exchanger with multiple plates Type de document : texte imprimé Auteurs : Haishan Cao, Auteur ; Guangwen Chen, Auteur ; Quan Yuan, Auteur Année de publication : 2009 Article en page(s) : pp. 4535–4541 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Microchannel  heat  exchangers  Stainless  steel  Heat  transfer  Reynolds  number  Correlation Résumé : The microheating system is one of the hard cores of a microchemical system. In this paper, the performance of microchannel heat exchangers (MCHEs) with two plates made of stainless steel was investigated experimentally. The maximum volumetric heat transfer coefficient was up to 5.2 MW/m3·K with a corresponding pressure drop of less than 20 kPa under a Reynolds number of around 65. The correlations of average Nusselt number and pressure drop to Reynolds number in microchannels were presented for designing MCHEs with multiple plates with the same geometric structure being researched, and the validity of correlations was verified through MCHEs with two plates and ten plates. Moreover, experimental results verified that MCHEs can be applied to recover energy in integrated microstructure systems of thermal and chemical processes via a system of ethanol dehydration to ethylene. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801419r [article] Testing and design of a microchannel heat exchanger with multiple plates [texte imprimé] / Haishan Cao, Auteur ; Guangwen Chen, Auteur ; Quan Yuan, Auteur . - 2009 . - pp. 4535–4541. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 9 (Mai 2009) . - pp. 4535–4541 Mots-clés : Microchannel  heat  exchangers  Stainless  steel  Heat  transfer  Reynolds  number  Correlation Résumé : The microheating system is one of the hard cores of a microchemical system. In this paper, the performance of microchannel heat exchangers (MCHEs) with two plates made of stainless steel was investigated experimentally. The maximum volumetric heat transfer coefficient was up to 5.2 MW/m3·K with a corresponding pressure drop of less than 20 kPa under a Reynolds number of around 65. The correlations of average Nusselt number and pressure drop to Reynolds number in microchannels were presented for designing MCHEs with multiple plates with the same geometric structure being researched, and the validity of correlations was verified through MCHEs with two plates and ten plates. Moreover, experimental results verified that MCHEs can be applied to recover energy in integrated microstructure systems of thermal and chemical processes via a system of ethanol dehydration to ethylene. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801419r

Thermal performance of crossflow microchannel heat exchangers / Haishan Cao in Industrial & engineering chemistry research, Vol. 49 N° 13 (Juillet 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6215–6220 Titre : Thermal performance of crossflow microchannel heat exchangers Type de document : texte imprimé Auteurs : Haishan Cao, Auteur ; Guangwen Chen, Auteur ; Quan Yuan, Auteur Année de publication : 2010 Article en page(s) : pp. 6215–6220 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Crossflow  microchannel  heat  exchanger  Forced-convection  heat  transfer Résumé : Forced-convection heat transfer in a crossflow microchannel heat exchanger (MCHE) was investigated via experiment. The microchannels on the plates of the MCHE were machined using a chemical etching method from 0.4-mm-thick stainless steel plates, and the plates were bonded together by vacuum diffusion bonding. The influence of the aspect ratio of microchannels was analyzed based on MCHEs with two plates. The maximum volumetric heat-transfer coefficient using deionized (DI) water as the working fluid reached 11.1 MW m−3 K−1, with a corresponding pressure drop of <6 kPa when the Reynolds number (Re) in the microchannels was ∼64. Besides, the maximum volumetric heat-transfer coefficient, using air as the working fluid, was 0.67 MW m−3 K−1, with a corresponding pressure drop of ∼30 kPa when Re ≈ 1026. Correlations of the average Nusselt number (Nu) and Re values were obtained from MCHEs with 2 plates, and their validity was confirmed by MCHEs with 2 and 10 plates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100107s [article] Thermal performance of crossflow microchannel heat exchangers [texte imprimé] / Haishan Cao, Auteur ; Guangwen Chen, Auteur ; Quan Yuan, Auteur . - 2010 . - pp. 6215–6220. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 13 (Juillet 2010) . - pp. 6215–6220 Mots-clés : Crossflow  microchannel  heat  exchanger  Forced-convection  heat  transfer Résumé : Forced-convection heat transfer in a crossflow microchannel heat exchanger (MCHE) was investigated via experiment. The microchannels on the plates of the MCHE were machined using a chemical etching method from 0.4-mm-thick stainless steel plates, and the plates were bonded together by vacuum diffusion bonding. The influence of the aspect ratio of microchannels was analyzed based on MCHEs with two plates. The maximum volumetric heat-transfer coefficient using deionized (DI) water as the working fluid reached 11.1 MW m−3 K−1, with a corresponding pressure drop of <6 kPa when the Reynolds number (Re) in the microchannels was ∼64. Besides, the maximum volumetric heat-transfer coefficient, using air as the working fluid, was 0.67 MW m−3 K−1, with a corresponding pressure drop of ∼30 kPa when Re ≈ 1026. Correlations of the average Nusselt number (Nu) and Re values were obtained from MCHEs with 2 plates, and their validity was confirmed by MCHEs with 2 and 10 plates. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100107s