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Article Navigation >  Green Energy&Environment  > 2019  >  4(2): 139-145
Haruki Watanabe, Takuro Komura, Ryo Matsumoto, Kenta Ito, Hiroshi Nakayama, Toshiki Nokami, Toshiyuki Itoh. Design of ionic liquids as liquid desiccant for an air conditioning system. Green Energy&Environment, 2019, 4(2): 139-145. doi: 10.1016/j.gee.2018.12.005
Citation: Haruki Watanabe, Takuro Komura, Ryo Matsumoto, Kenta Ito, Hiroshi Nakayama, Toshiki Nokami, Toshiyuki Itoh. Design of ionic liquids as liquid desiccant for an air conditioning system. Green Energy&Environment, 2019, 4(2): 139-145. doi: 10.1016/j.gee.2018.12.005
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Design of ionic liquids as liquid desiccant for an air conditioning system

doi: 10.1016/j.gee.2018.12.005
  • a.

    Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Japan

  • b.

    Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyama-minami, Tottori 680-8552, Japan

  • c.

    Chubu Electric Power Company, Inc., Research and Development Division Energy Application Research and Development Center, 20-1 Kitasekiyama Ohtaka-cho, Midori-ku, Nagoya 459-8522, Japan

More Information
  • Corresponding author: E-mail address: titoh@tottori-u.ac.jp (Toshiyuki Itoh)
  • Received date 18 October 2018, Accepted date 18 December 2018, RevRecd date 18 December 2018, Available online 09 January 2019, Publish date 30 April 2019,
    Abstract
  • Suitable control of the humidity can contribute to electric energy savings. However, the present dehumidification system has many weak points. The liquid desiccant air-conditioning system has recently gained growing interest from the stand point of reducing energy consumption during dehumidification. In order to find the appropriate ionic liquids (ILs) as a desiccant for the liquid desiccant air-conditioner system, we conducted a systematic evaluation of the humidification capability of 16 types of ILs. Among the tested ILs, tributyl(methyl)phosphonium dimethyl phosphate ([P4441][DMPO4]) exhibited the best dehumidification capacity and had a less corrosive effect on four types of metals as possible piping materials. It should be noted that this [P4441][DMPO4] has a very stable nature and produced no odor while conducting the experiment and storing for over 1 year at room temperature under ambient conditions. Furthermore, it was revealed that a 77% (w/w) aqueous solution of [P4441][DMPO4] worked as an efficient desiccant liquid for the liquid desiccant air-conditioner system.

     

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