Performance of Desiccant Particle Dispersion Type Air Conditioning System

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  • HATANO Hiroyuki
    Energy Technology Research Institute, Advanced Industrial Science and Technology
  • SUZUKI Koichi
    Dept. of Mechanical Engineering, Faculty of Science and Technology, Tokyo University of Science
  • KOJIMA Hiromitsu
    Dept. of Applied Chemistry, Faculty of Engineering, Kanagawa Institute of Technology

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  • 粒子分散型デシカント空調システムの除湿特性
  • リュウシ ブンサンガタ デシカント クウチョウ システム ノ ジョシツトクセイ

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Abstract

  An investigation of desiccant air conditioning system is performed to demonstrate its performance in a dispersed desiccant particle systems, based on its higher gas solid contacting efficiency and isothermal dehumidification. Particle dispersion is achieved using the risers of a circulating fluidized bed, CFB, or of a pneumatic conveyer. The risers used for dehumidification are 1390 mm in height and 22 mm in diameter. The former is used to evaluate the overall dehumidification performance and the latter is used to measure the axial humidity distribution under 0.88 m/s of a superficial air velocity. Based on the results of the overall performance by changing solid loading rates, Gs, from 0.4 kg/m2s up to 6 kg/m2s, desiccant particle dispersion shows higher performance in dehumidification, while axial humidity distribution shows very rapid adsorption rate in the entrance zone of the riser. Removal of adsorption heat accelerates dehumidification rate compared to the adiabatic process.

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