化工进展 ›› 2021, Vol. 40 ›› Issue (2): 959-968.DOI: 10.16085/j.issn.1000-6613.2020-0716

• 材料科学与技术 • 上一篇    下一篇

干燥剂换热器系统用吸湿性聚合物材料研究进展

陈康(), 朱燕, 郑旭()   

  1. 浙江理工大学建筑工程学院,浙江 杭州 310018
  • 收稿日期:2020-04-30 修回日期:2020-06-23 出版日期:2021-02-05 发布日期:2021-02-09
  • 通讯作者: 郑旭
  • 作者简介:陈康(1998—),男,硕士研究生,研究方向为复合材料及除湿空调技术。E-mail:1689785320@qq.com
  • 基金资助:
    国家自然科学基金(51806195);中华人民共和国住房和城乡建设部科学技术项目(2018-K1-012);浙江理工大学基本科研业务费专项(2020Q033)

Recent progress of hygroscopic polymers for desiccant coated heat exchanger systems

Kang CHEN(), Yan ZHU, Xu ZHENG()   

  1. School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China
  • Received:2020-04-30 Revised:2020-06-23 Online:2021-02-05 Published:2021-02-09
  • Contact: Xu ZHENG

摘要:

干燥剂换热器克服了干燥剂吸水升温导致吸水能力下降的缺点,还可实现太阳能、工业废热等低品位热源的利用,具有较好的除湿能力和节能潜力。干燥剂的特性决定着干燥剂换热器系统的除湿性能。相比于硅胶、沸石等常规干燥剂,吸湿性聚合物在吸水量上存在着巨大优势,而通过掺杂硅胶、无机盐等制得的聚合物基复合干燥剂的吸湿性能更优。近年来,越来越多的国内外学者对吸湿性聚合物在干燥剂换热器系统中的应用进行研究。本文将吸湿性聚合物分为天然和合成两大类,详细介绍了其性能特点以及在干燥剂换热器系统中的除湿性能研究,其中合成类主要包括聚合物电解质、金属-有机骨架化合物和聚合物基复合干燥剂。同时,还对干燥剂换热器中的黏结剂进行了分析和总结。最后对吸湿性聚合物和黏结剂今后的发展方向进行了展望。

关键词: 聚合物, 干燥剂换热器, 复合材料, 吸附, 除湿

Abstract:

Desiccant coated heat exchangers (DCHE) overcome the negative impact of released heat of adsorption during water vapor adsorption. It can also make use of low-grade heat sources, such as solar energy and industrial waste heat, and thus higher dehumidification performance and energy saving potential can be achieved. The dehumidification performance of DCHE based systems is determined by the characteristics of coated desiccants. Compared with conventional desiccants like silica gels and zeolites, hygroscopic polymers have a great advantage in water uptake. Meanwhile, these hygroscopic polymer-based composites fabricated by doping silica gels or inorganic salts have better water adsorption abilities. Recently, more and more scholars have studied the performance of hygroscopic polymers in DCHE based systems at home and abroad. In this paper, hygroscopic polymers were divided into two categories, namely natural and synthetic. The latter mainly included polymer electrolytes, metal-organic frameworks (MOFs) and polymer-based composites. Their dehumidification performance in DCHE based systems was analyzed and summarized. Binders used in DCHE based systems were also summed up. Finally, future development of hygroscopic polymers and binders was prospected.

Key words: polymer, desiccant coated heat exchanger, composites, adsorption, dehumidification

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