Combined heat and mass transfer analysis for LiCl dehumidification process in a plate type heat exchanger

被引:13
|
作者
Lee, Jae Hyun [1 ]
Ro, Gu Hyun [2 ]
Kang, Yong Tae [1 ]
Chang, Young Soo [3 ]
Kim, Seon Chang [4 ]
Kim, Young Lyoul [4 ]
机构
[1] Korea Univ, Sch Mech Engn, Seoul 136701, South Korea
[2] Kyung Hee Univ, Dept Mech Engn, Yongin 446701, Gyeonggi Do, South Korea
[3] Kookmin Univ, Dept Mech Engn, Seoul 136702, South Korea
[4] Korea Inst Ind Technol, Green Energy Syst Technol Ctr, Cheonan Si 331822, Chungnam Do, South Korea
关键词
Combined heat and mass transfer; Lithium chloride; Liquid desiccant; Plate type dehumidifier; PACKED-COLUMN; ABSORPTION; AIR; COEFFICIENTS; SYSTEM;
D O I
10.1016/j.applthermaleng.2015.11.040
中图分类号
O414.1 [热力学];
学科分类号
摘要
Liquid desiccant systems have been extensively drawn attention due to its benefits of reducing the energy consumption and being environmental friendly technology. The objectives of this study are to analyze the combined heat and mass transfer characteristics of LiCl (lithium chloride) aqueous solution for the liquid desiccant system of plate type dehumidifier and to compare the analytical model with the experimental results. The plate surface is treated with a hydrophilic coating to enhance the wettability of the solution distribution and to decrease the solution scattering on the plate surface. It can be seen that the heat transfer coefficient and the mass transfer coefficient range from 0.25 to 0.47 kW/m(2)K and from 4 to 12 x 10(-7) m/s, respectively. It is concluded that the air velocity is the most significant element for enhancing the performance during the dehumidification process. Finally, Nusselt and Sherwood number correlations are developed with the error bands of +/- 25%, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:250 / 257
页数:8
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