Experimental investigation on the performances on the shell side of shell - and - tube heat exchangers with multiparallel channels / Wen-Liang Zeng in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13545-13553 Titre : Experimental investigation on the performances on the shell side of shell - and - tube heat exchangers with multiparallel channels Type de document : texte imprimé Auteurs : Wen-Liang Zeng, Auteur ; Zheng-Guo Zhang, Auteur Année de publication : 2012 Article en page(s) : pp. 13545-13553 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Heat exchanger Résumé : This paper presents an experimental investigation on the local surface heat-transfer coefficient on the shell side of a longitudinal-flow shell-and-tube heat exchanger with a multiparallel channel (MPC) inlet and outlet. Under the conditions of with or without a fluid flow distributor (FDB) in the inlet region of the heat exchanger, some characteristics (such as the local Nussult number (Nu) distribution, local-mean Nu distribution, overall heat-transfer performance, and pressure drop) were investigated. The investigation results reveal the distribution of the local surface Nu value in the inlet region, and they give a reasonable mechanism analysis. It was suggested that not only the uniformity of both the fluid flow and the local Nu distribution was effectively improved by FDBs, but also that the global heat-transfer surface Nu value of the heat exchanger was enhanced by more than 10% with the pressure drop increasing slightly by FDBs. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267513 [article] Experimental investigation on the performances on the shell side of shell - and - tube heat exchangers with multiparallel channels [texte imprimé] / Wen-Liang Zeng, Auteur ; Zheng-Guo Zhang, Auteur . - 2012 . - pp. 13545-13553. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 13545-13553 Mots-clés : Heat exchanger Résumé : This paper presents an experimental investigation on the local surface heat-transfer coefficient on the shell side of a longitudinal-flow shell-and-tube heat exchanger with a multiparallel channel (MPC) inlet and outlet. Under the conditions of with or without a fluid flow distributor (FDB) in the inlet region of the heat exchanger, some characteristics (such as the local Nussult number (Nu) distribution, local-mean Nu distribution, overall heat-transfer performance, and pressure drop) were investigated. The investigation results reveal the distribution of the local surface Nu value in the inlet region, and they give a reasonable mechanism analysis. It was suggested that not only the uniformity of both the fluid flow and the local Nu distribution was effectively improved by FDBs, but also that the global heat-transfer surface Nu value of the heat exchanger was enhanced by more than 10% with the pressure drop increasing slightly by FDBs. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267513

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