Modeling and Simulation of Double-Pass Parallel-Plate Mass Exchangers under Asymmetric Wall Concentrations

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Chii-Dong Ho¹  Jr-Wei Tu¹  Cheng-Liang Chang¹  Chi-Chin Kuo¹  Yih-Hang Chen¹ 

[1] Energy and Opto-Electronic Materials Research Center, Department of Chemical and Materials Engineering, Tamkang University

关键词: Mass Transfer;    Double-Pass Operations;    Device Performance;    Conjugated Graetz Problems;    Asymmetric Wall Concentrations;   

DOI  :  10.1252/jcej.11we037

来源: Maruzen Company Ltd

【 摘 要 】

References(29)A double-pass parallel-plate mass exchanger under asymmetric wall concentrations is designed by inserting in parallel a permeable membrane to improve the device performance. A mathematical model was formulated theoretically for such double-pass forced-convection mass exchangers, as referred to conjugated Graetz problems. Linear superposition was introduced to analytical solutions of the resultant partial differential equations, which consists of an inhomogeneous solution with respect to the non-homogeneous boundary condition and a homogeneous solution is obtained with the use of an eigenfunction expansion in a power series. The analytical results show that the mass transfer efficiency of this double-pass parallel-plate mass exchanger is considerably enhanced as compared to that of a single-pass device by suitably adjusting the permeable-membrane position. Economic consideration in terms of the mass transfer efficiency and power consumption increment for double-pass operation is presented.

【 授权许可】

Unknown