Relation between Water Vapor Adsorption Isotherms and Dynamic Dehumidification Performances of Desiccant Rotor

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  • INOUE Koji
    Research & Development Department, SEIBU GIKEN CO., LTD. Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • MATSUGUMA Shingo
    Research & Development Department, SEIBU GIKEN CO., LTD.
  • JIN Wei-Li
    Research & Development Department, SEIBU GIKEN CO., LTD.
  • OKANO Hiroshi
    Research & Development Department, SEIBU GIKEN CO., LTD.
  • TERAOKA Yasutake
    Department of Energy and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • HIROSE Tsutomu
    Advanced Adsorption Technology (General Corporation)

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Other Title
  • デシカントロータの水蒸気吸着等温線と動的除湿性能との関係
  • デシカントロータ ノ スイジョウキ キュウチャク トウオンセン ト ドウテキジョシッセイノウ ト ノ カンケイ

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Desiccant rotors with different water vapor adsorption properties were fabricated by the synthesis of silica gels inside the honeycomb matrices. Dynamic dehumidification performances of the rotors were measured under different conditions and they were discussed in relation to water vapor adsorption isotherms. At the reactivation air temperatures of 80 and 140 oC, the best dynamic performance was observed with the rotor on which the adsorbed amount of water vapor at lower relative humidity was highest. When the reactivation air temperature was 50 oC, on the other hand, the rotor of which the isotherm exhibited monotonic and nearly linear increase up to higher relative humidity was the most suitable. The normalized changes of absolute humidity and adsorbed amount were defined, and these phenomena were analyzed. When the dependences of both parameters against the relative humidity were similar, the rotor showed the best dehumidification performance.

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