关键词:

气扫式膜蒸馏, 膜通量, 传热, 传质

Abstract:

Mass transfer and heat transfer through hydrophobic microporous membrane in sweeping gas membrane distillation(SGMD) was studied.A model about heat and mass transfer was constructed and solved.The effects of sweeping gas velocity, module length, feed flux and feed temperature on membrane flux were tested.The calculated membrane flux was compared with measured membrane flux.The experimental results showed that the calculated flux was near to the measured one.With increasing gas velocity membrane flux increased.Decreasing module length led to increasing membrane flux.Feed flux had little effect on membrane flux and with the increase of feed temperature, membrane flux increased dramatically.

Key words:

气扫式膜蒸馏, 膜通量, 传热, 传质