The Effect of Recycle on Double-Pass Laminar Counterflow Concentric Circular Mass Exchangers

Autor:	Gwo-Geng Lin, Cheng-Lin Ho, Chii-Dong Ho
Rok vydání:	2005
Předmět:	Chemistry Position (vector) General Chemical Engineering Mass transfer Analytical chemistry Laminar flow Tube (fluid conveyance) General Chemistry Mechanics Concentric Power (physics) Graetz number Double pass
Zdroj:	JOURNAL OF CHEMICAL ENGINEERING OF JAPAN. 38:12-17
ISSN:	1881-1299 0021-9592
DOI:	10.1252/jcej.38.12
Popis:	A double-pass mass exchanger with external recycle by inserting a permeable barrier to divide a circular tube into two subchannels of uniform wall concentration, resulting in substantially improving the mass transfer rate, has been investigated theoretically. The mathematical formulation to such a double-pass concentric circular mass exchanger with external recycle, as referred to conjugated Graetz problems, and theoretical analysis on mass transfer efficiency improvement have been developed using an orthogonal expansion technique in power series.The analytical results show that considerable improvement in mass transfer is obtained with a suitable adjustment of the permeable-barrier position and recycle ratio. The numerical example in mass transfer efficiency by arranging the recycle ratio were illustrated with the mass-transfer Graetz number as a parameter. The effects of permeable-barrier position and recycle ratio on the mass-transfer efficiency improvement as well as on power consumption increment have been also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5aa177102e53f8aabaac5a5f1b281b51 https://doi.org/10.1252/jcej.38.12 Zobrazit plný text záznamu