中空纤维膜液体除湿过程中热质传递特性的实验研究  

Experimental Study on Heat and Mass Transfer Characteristics of Hollow Fiber Membrane-based Liquid Desiccant Air Dehumidification

作　　者：殷少有[1] 张宁[2] 

机构地区：[1]顺德职业技术学院广东高校热泵工程技术开发中心,佛山528333 [2]华南理工大学化学与化工学院,广州510640

出　　处：《制冷学报》2017年第3期96-100,共5页Journal of Refrigeration

基　　金：国家自然科学基金(51506055;51576136)资助项目;中央高校基本科研业务费基金(2015ZM109)--膜式除湿系统的动态特性研究项目资助~~

摘　　要：利用基于中空纤维膜的液体除湿技术去除空气中的水蒸气,可以防止除湿溶液与湿空气的直接接触,有效避免传统除湿方式造成的空气夹液飞沫污染问题。本文搭建了除湿膜组件的性能测试实验台,研究了不同的空气流量、温度、压力和溶液流量对除湿组件的热质传递特性的影响。结果表明:除湿膜组件具有20%~60%的除湿效率,与传统的直接接触式填料塔的除湿效率接近。在高温或高湿的空气运行工况下,膜组件的除湿量高达800 g/h。此外,膜式除湿技术还具有较强的空气制冷能力,最大制冷量接近700 W。因此利用中空纤维膜液体除湿技术对空气除湿特别适合我国南方湿热地区的夏季气候条件。In the hollow-fiber-membrane-based liquid desiccant air dehumidification process, water vapor can permeate through the membrane effectively, while the liquid desiccant droplets are prevented from crossover. Hence, the traditional problems of desiccant droplet crossover and indoor environmental pollution are solved. In this research, a test rig of the membrane module is built, and the performance of the system is investigated experimentally. The results show that the dehumidification efficiency is in the range of 20% - 60%. This is comparable to a direct-contact packed bed dehumidifier. The largest dehumidification rate is about 800 g/h under very hot and humid weather conditions. Moreover, the cooling capacity of the dehumidification is as high as 700 W. Therefore, it performs well even under hot, and humid South China weather conditions.

关 键 词：热质传递 实验研究 除湿 液体除湿剂 

分 类 号：TU834.9[建筑科学—供热、供燃气、通风及空调工程] TK124[动力工程及工程热物理—工程热物理]