涂覆MIL-101(Cr)干燥剂的翅片管换热器的实验研究  

Experimental Investigation on Fin-tube Heat Exchangers Coated with MIL-101(Cr)Desiccant

作　　者：刘忠宝[1] 韩君地 郎辉伟 Liu Zhongbao;Han Jundi;Lang Huiwei(College of Energy,Beijing University of Technology,Beijing,100124)

机构地区：[1]北京工业大学环能学院,北京100124

出　　处：《制冷与空调（四川）》2021年第1期1-12,共12页Refrigeration and Air Conditioning

基　　金：北京自然科学基金(批准号:3202008);国家自然科学基金(批准号:51776006)。

摘　　要：干燥剂涂层换热器(DCHE)是一种新开发的翅片管表面带有干燥剂涂层的换热器,它可以同时处理潜热和显热。为了获得更高的性能,高孔隙度的金属有机框架(MOF)被引入到设计中。本文通过水浴法成功合成MIL-101(Cr)材料,并对材料进行X射线衍射(XRD)、N_(2)吸附-脱附测试、水蒸气吸脱附曲线、电镜扫描等系列物理表征。制作MIL-101(Cr)涂层换热器(MCHE),搭建除湿性能测试实验平台,研究了有无冷却水、风速、再生温度、进口湿度对系统除湿效率、平均除湿量和除湿能效系数的影响,并与传统的硅胶除湿换热器(SCHE)性能做对比。结果显示MCHE通入冷却水可以提高除湿性能;随着进口风速的增加,除湿换热器的平均除湿量降低比较明显;随着空气进口含湿量的增加,两种除湿换热器的除湿性能都呈上升趋势。MCHE的最佳再生温度为333K,硅胶涂层热交换器(SCHE)的最佳再生温度为343K。MIL-101(Cr)除湿换热器在中高湿度环境下除湿性能相比传统硅胶换热器更加具有优势。The desiccant coated heat exchanger(DCHE)is a newly developed heat exchanger with a desiccant coating on the surface of the finned tube,which can handle latent heat and sensible heat at the same time.In order to obtain higher performance,high porosity metal organic framework(MOF)was introduced into the design.In this paper,the MIL-101(Cr)material was successfully synthesized by the water bath method,and the material was subjected to a series of physical characterizations such as X-ray diffraction(XRD),N_(2) adsorption-desorption test,water vapor absorption-desorption curve,and electron microscope scanning.Manufactured MIL-101(Cr)coated heat exchanger(MCHE),built an experimental platform for dehumidification performance test,and studied whether the cooling water,wind speed,regeneration temperature,inlet humidity affect the system dehumidification efficiency,average dehumidification capacity and dehumidification energy efficiency coefficient And compare with the performance of traditional silica gel dehumidification heat exchanger(SCHE).The results show that cooling water can increase the dehumidification performance of MCHE;as the inlet wind speed increases,the average dehumidification amount of the dehumidification heat exchanger decreases significantly.As the moisture content of the air inlet increases,the dehumidification performance of both dehumidifier heat exchangers is on the rise.The optimal regeneration temperature of MCHE is 333K,and the optimal regeneration temperature of silicone coated heat exchanger(SCHE)is 343K.The dehumidification performance of MIL-101(Cr)dehumidification heat exchanger has more advantages than the traditional silica gel heat exchanger in the medium and high humidity environment.

关 键 词：MIL-101(Cr) 翅片管换热器 干燥剂涂覆 除湿性能 

分 类 号：TB69[一般工业技术—制冷工程]