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논문 기본 정보

자료유형
학술대회자료
저자정보
Young-Deuk Kim (Hanyang University) Jung-Gil Lee (Hanyang University) Woo-Seung Kim (Hanyang University) June-Seok Choi (KICT)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 창립 70주년 기념 학술대회
발행연도
2015.11
수록면
815 - 820 (6page)

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초록· 키워드

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In this study, the experimental and theoretical studies have been carried out to achieve a more comprehensive and systematic understandings on the fundamentals in heat and mass transfer through a commercial flat sheet composite membrane that employs different types of spacers in bulk feed and permeate flow channels. The commercial composite membrane used is comprised of an active layer of polytetrafluoroethylene (PTFE) and a scrim-backing support layer of polypropylene (PP), and its performance has been tested in the DCMD process. The different types of polypropylene and nylon mesh spacers have been used at both sides of the composite membrane as a support and turbulence promoter. In DCMD process the water vapor passes through the dry membrane pores, driven by the vapor partial pressure difference imposed between the liquid–vapor interfaces. The mass transport through the composite membrane can be described by two individual transfer paths: (i) polytetrafluoroethylene active layer not covered by polypropylene scrim support layer at the permeate side (i.e., effective open area for diffusion) and (ii) composite polytetrafluoroethylene active and polypropylene support layers. The influence of the spacers on the permeate flux enhancement in DCMD process with a PTFE/PP composite membrane has been examined experimentally and theoretically. The heat transfer coefficients are evaluated and correlated with the spacer geometries, hydrodynamic angle and voidage.

목차

Abstract
1. Introduction
2. Experimental
3. Theoretical Approach
4. Results and discussion
5. Conclusions
Reference

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UCI(KEPA) : I410-ECN-0101-2016-550-002182810