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Experimental investigation of the solid desiccant dehumidification system with metal organic frameworks
International Journal of Refrigeration ( IF 3.9 ) Pub Date : 2021-06-20 , DOI: 10.1016/j.ijrefrig.2021.06.020
Jung-Gil Lee , Kyung Jin Bae , Oh Kyung Kwon

In this study, the comprehensive study of the performance investigation of Solid Desiccant Based Dehumidification (SDBD) system which involves the desiccant selection and desiccant coating with metallic heat exchanger was conducted at the mild humid conditions which represent the humid air conditions in summer, South Korea. The water uptake capacity of three different solid desiccants was investigated to find the proper solid desiccant in the SDBD system under the given operating conditions. Among the three different solid desiccants, the aluminum fumarate based metal organic frameworks (MOFs) was selected as the best solid desiccant for SDBD system and it has the maximum water uptake capacity around 0.398 g·g−1 for given operating conditions. The aluminum fumarate based metal organic frame works (MOFs) was coated on the metallic surface of heat exchanger by current developed coating method and the desiccant and binder solution is consistent of 10% of binder and solvent mixture and 90% of aluminum fumarate based MOFs. As a result, the increase of coating thickness from 0.05 mm to 0.2 mm and operating time from 150 s to 300 s can achieve the 113% and 131% of dehumidification performance enhancement in average, respectively. Remarkably, over 160% improvement of dehumidification performance in average can be achieved by the decrease of space velocity from 13 s−1 to 5.2 s−1.



中文翻译:

金属有机骨架固体干燥剂除湿系统的实验研究

在本研究中,在代表韩国夏季潮湿空气条件的温和潮湿条件下,对基于固体干燥剂的除湿 (SDBD) 系统的性能调查进行了综合研究,该系统涉及干燥剂选择和金属热交换器干燥剂涂层。 . 研究了三种不同固体干燥剂的吸水能力,以在给定的操作条件下在 SDBD 系统中找到合适的固体干燥剂。在三种不同的固体干燥剂中,富马酸铝基金属有机骨架(MOFs)被选为SDBD系统的最佳固体干燥剂,其最大吸水能力约为0.398 g·g -1对于给定的操作条件。将富马酸铝基金属有机骨架材料(MOFs)通过目前开发的涂覆方法涂覆在换热器金属表面,干燥剂和粘合剂溶液为10%的粘合剂和溶剂混合物和90%的富马酸铝基MOFs。因此,涂层厚度从 0.05 mm 增加到 0.2 mm,操作时间从 150 s 增加到 300 s,可分别实现平均 113% 和 131% 的除湿性能增强。值得注意的是,通过将空速从13 s -1 降低到5.2 s -1,平均可以实现超过160%的除湿性能提高。

更新日期:2021-08-15
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