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International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

CONJUGATE HEAT AND MASS TRANSFER IN A QUASI-COUNTER FLOW PARALLEL-PLATE MEMBRANE CHANNEL (QCPMC)

Wen-Kai Zhang
Key Laboratory of Distributed Energy Systems of Guangdong Province, Dongguan University of Technology, Dongguan 523808, China; School of Electric Power, South China University of Technology, Guangzhou 510640, China

Si-Min Huang
Key Laboratory of Distributed Energy Systems of Guangdong Province, Department of Energy and Chemical Engineering, Dongguan University of Technology, Dongguan 523808, People's Republic of China

Minlin Yang
Key Laboratory of Distributed Energy Systems of Guangdong Province, Department of Energy and Chemical Engineering, Dongguan University of Technology

Xiaoxi Yang
Key Laboratory of Distributed Energy Systems of Guangdong Province, Department of Energy and Chemical Engineering, Dongguan University of Technology

DOI: 10.1615/IHTC16.hte.021937
pages 4947-4961


KEY WORDS: Conjugate heat and mass transfer, Quasi-counter flow, Parallel-plate, Liquid desiccant air dehumidification, Membrane contactor

Abstract

A parallel-plate membrane contactor with quasi-counter flow arrangement has been designed and used for liquid desiccant air dehumidification. The air and the liquid desiccant streams are separated by the semi-permeable membrane which only allow the permeation of water vapor. Heat and water vapor of the two streams are exchanged through the membrane. The three-dimensional mathematical model is built based on the unit cell, which containing a plate-type membrane and half of the channel. The momentum, energy and mass conservation equations are solved by a finite volume difference approach under the conjugate heat and mass transfer boundary conditions. The local and mean product of friction factor and Reynold, Nusselt number and Sherwood number are then obtained. Influence of entrance ratios (xin/x0) on the (ƒRe)m, Num and Shm are analyzed.

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