Experimental performance of a three-fluid desiccant contactor using a novel ionic liquid

Richard Jayson Varela*, Niccolo Giannetti, Kiyoshi Saito, Xinming Wang, Hiroshi Nakayama

*この研究の対応する著者

研究成果: Article査読

抄録

The experimental performance of a new three-fluid fin–tube contactor using a novel ionic liquid desiccant solution is investigated and compared with those of an adiabatic packed bed contactor with LiCl solution for liquid desiccant air conditioning system applications. Owing to the compatibility of the ionic liquid solution with aluminum, a fin–tube contactor is manufactured to exploit internal cooling from a third fluid. The results indicate the superior dehumidification performance of the fin–tube contactor, which yielded an outlet air humidity ratio of 10.5 gw·kgda-1 at a solution mass flux of 3.06 kg·m−2·s−1, as compared to a similar humidity ratio at a solution mass flux of 4.98 kg·m−2·s−1 achieved by the packed bed contactor. In terms of cooling performance, the outlet air temperature of the fin–tube contactor is 21.9 °C, which is lower than that of the packed bed contactor even at its highest solution mass flux. This indicates that the cooling performance of the fin–tube contactor has minimal dependence on the solution mass flux in achieving cooling effect, owing to the cooling medium flowing inside the tubes. Relatively lower solution pumping power than that of the packed bed contactor can be expected from the fin–tube contactor, in addition to the ability to achieve comfortable and hygienic indoor air at a cooling medium temperature of 17 °C or higher, the ionic liquid desiccant and three-fluid fin–tube contactor pair for liquid desiccant air conditioning system is elevated a step higher as an alternative to vapor compression air conditioning system.

本文言語English
論文番号118343
ジャーナルApplied Thermal Engineering
210
DOI
出版ステータスPublished - 2022 6月 25

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 産業および生産工学

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