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膜蒸馏技术因其低能耗、高截留率的特点，在海水淡化、废水处理及资源回收等领域展现出广阔的应用前景。然而，膜通量的提升仍是该领域研究的核心问题之一。基于仿生设计理念，提出了一种仿生锥形冷凝板结构，并通过实验探究了不同锥体倾斜角度(45°、60°、90°)对膜蒸馏性能的影响。实验采用质量分数5%的NaCl溶液作为热料液，固定入口温度为60℃,冷料液选用自来水，通过冷水机控制入口温度为15℃,流量稳定在216 L/h,气隙厚度为4 mm。研究结果表明，冷凝板锥体结构对膜通量具有显著影响，其中倾斜角为90°时，膜通量增幅达到9.475 kg/(m2·h),较60°和45°倾角分别提升约5.6%和11.8%,表现出最佳的冷凝效率与传热性能。研究为冷凝板结构优化提供了实验依据，为提升膜蒸馏技术的工程应用水平提供了新思路。
Abstract：Membrane distillation technology has broad applications in seawater desalination, wastewater treatment and resource recovery due to its low energy consumption and high solute rejection.However, membrane flux enhancement is still one of the key issues in current research.In this study, a novel bionic conical condensate plate structure is proposed based on the bionic design concept, and the effects of different cone inclination angles(45°,60°,90°) on membrane distillation performance are experimentally investigated.The experiments are carried out using NaCl solution with 5% mass concentration as the hot feed solution with fixed inlet temperature of 60 ℃,and the cold feed solution is selected from tap water, whose inlet temperature is controlled at 15 ℃ by a chiller, the feed flow rate was stabilized at 216 L/h, and the thickness of the air gap is set as 4 mm.The results show that the conical structure of condensate plate significantly affects the membrane flux.The specimen with 90° cone inclination achieves the optimal condensation and heat transfer performance, with its permeate flux reaching 9.475 kg/(m2·h),which is 5.6% and 11.8% higher than those of 60° to 45° inclination respectively.This study provides experimental basis for optimising the condensate plate structure and offers a new idea for improving the practical application of membrane distillation technology.
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基本信息:
DOI：10.16468/j.cnki.issn1004-0366.2026.04.010
中图分类号:TQ028.8
引用信息:
[1]吴江波,苏茂,杜小泽,等.锥体倾斜角对仿生冷凝板强化气隙式膜蒸馏性能的实验研究[J].甘肃科学学报,2026,38(04):82-88.DOI:10.16468/j.cnki.issn1004-0366.2026.04.010.
基金信息:
甘肃省科技计划项目重点研发计划(22YF7GA163)
2026-07-08
2026-07-08
2026-07-08