Study on the Miniaturization of the Desiccant Wheel by the Optimization of Designing/Operation Concept

  • Tsujiguchi Takuya
    School of Mechanical Engineering, College of Science and Engineering, Kanazawa University
  • Osaka Yugo
    School of Mechanical Engineering, College of Science and Engineering, Kanazawa University
  • Kodama Akio
    School of Mechanical Engineering, College of Science and Engineering, Kanazawa University

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The effect of designing conditions, such as the length and the ratio of the adsorption area of the desiccant wheel, and the operation conditions, such as the volumetric flow rate and air velocity, on the volume of the desiccant wheel were estimated using numerical analysis in order to present an operation and designing concept which can minimize the size of the desiccant wheel. As example results, it was found that a 40% reduction in the volume of the desiccant wheel was expected comparing to that of a typical commercialized one when 8 g/kg of dehumidified water was obtained by selecting the appropriate operating/designing parameters. Moreover, when the volumetric flow rate of adsorption air and the regeneration air were the same at 500 m3/h, it was found that a 32% reduction in volume of desiccant wheel was expected comparing to that of a typical commercialized one when 8 g/kg of dehumidified water was obtained by operating it at appropriate conditions. These results suggested that a desiccant wheel can be miniaturized by selecting appropriate designing and operating parameters.

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