膜科学与技术

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ClassificationCode：TQ028.8

year,volume(issue):pagination： 2017,37(2):88-95

Abstract：

By using computational fluid dynamics (CFD) software, the three-dimensional calculation model was constructed to research the internal heat and mass transfer progress of the new type of heat recovery of frame and air gap membrane distillation module. The distribution of fluid temperature was examined under the condition of different feed temperature, feed rate and operating vacuum. The simulation results showed that: the surface temperature of membrane was increased by improving feed rate or decreasing vacuum degree of permeability side; Outer surface temperature of heat-transfer hollow fiber by side of the permeability showed the tendency was increasing from the bottom. The outer surface temperature of each hollow fiber existed differences, the higher outer surface temperature of hollow fiber, the closer distance to the side of membrane. The steam temperature of the bottom of side of the permeability was higher than main temperature of the hot feed liquid, which was not conducive to membrane distillation process. The effective area of membrane distillation would be increased which elevates temperature or vacuum degree. This study reveals internal intuitive parameters distribution law of the new component, which laid a foundation for further optimization of the internal structure.

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天津市支撑计划项目（12ZCZDSF02200）

AuthorIntro：

第一作者简介：许凯（1991-），男，江苏省如皋县，硕士研究生，研究方向：膜蒸馏过程传质传热研究，E-mail：tdxukai@163.com

Reference：

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