Thermal conductivity and sorption performance of nano-silver powder/FAPO-34 composite fin

被引：29
作者：
Zheng, X. [1 ]
Lin, Z. [2 ]
Xu, B. Y. [1 ]
机构：
[1] Zhejiang Sci Tech Univ, Sch Civil Engn & Architecture, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Sci Tech Univ, Natl Prov Joint Engn Lab Fluid Transmiss Syst Tec, Hangzhou 310018, Zhejiang, Peoples R China
来源：
APPLIED THERMAL ENGINEERING | 2019年 / 160卷
基金：
中国国家自然科学基金;
关键词：
Composite desiccant; Adsorption; Desorption; Desiccant coated heat exchanger; COATED HEAT-EXCHANGER; SILICA-GEL; DESICCANTS; PUMP; LICL;
D O I：
10.1016/j.applthermaleng.2019.114055
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Desiccant coated aluminum fins are an important part of desiccant coated heat exchangers (DCHEs). The overall performance of DCHE-based systems benefits from improved heat and mass transfer characteristics of desiccant coated aluminum fins. In this paper, a new type of nano-silver powder supported FAPO-34 composite fin is proposed. Samples with different mass percentages of nano-silver powder were fabricated and related characteristics including thermal conductivity, cycle water uptake and adsorption/desorption performance were investigated. Our experimental results show greatly improved thermal conductivity of nano-silver powder supported composite sheets. Analysis of the adsorption testing confirmed that the nano-silver powder improved dynamic adsorption performance, and adsorption rate coefficients of composite sheets increasing by 6-103% compared with that of a pure FAPO-34 coated sheet. The composite samples also exhibited better dynamic desorption performance, in that their desorption rate coefficients increased to be 1.3-2.3 times as great as those of the pure FAPO-34 sample.
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页数：6
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