Design of ionic liquids as liquid desiccant for an air conditioning system

• 作者: Haruki Watanabe Hiroshi Nakayama Kenta Ito Ryo Matsumoto Takuro Komura Toshiki Nokami Toshiyuki Itoh
• 来源期刊: 绿色能源与环境:英文版
• 学科: 工学
• 关键词: DEHUMIDIFICATION Liquid DESICCANT Ionic liquids AIR-CONDITIONER system PHOSPHONIUM ILS
• 年，卷（期）: 2019,（2）
• 页码范围: 139-145
• 页数: 7页
• 分类号: TK

摘要

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.