Measurements of adsorption/desorption rate of a film adsorbent synthesized on heat transfer plate controlled by adsorbent temperature in water vapor

Takafumi Ouchi, Yoshinori Hamamoto, Hideo Mori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Enhancement of adsorption/desorption rate in an adsorption heat exchanger is effective to enhance cooling/heating power per unit volume of adsorption chillers and dehumidifying/humidifying rate of desiccant systems. To achieve this, it is necessary to improve heat transfer performance in the adsorption heat exchanger. In the present study, for a porous alumina film adsorbent synthesized with anodization on an aluminum plate, we measured the adsorption/desorption rate in water vapor with gravimetric method using a cantilever. Consequently, the effective diffusivity in water vapor was larger than that in moist air due to the mass transfer resistance of fluid film in moist air. In water vapor, the diffusivity inside pores dominated the diffusivity and it decreased when the number of adsorption layer changes. It is supposed that a change of activation energy for adsorption/desorption due to a change of the adsorption layer number leads to the decrease of the diffusivity.

Original languageEnglish
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages599-606
Number of pages8
ISBN (Electronic)9782362150128
DOIs
Publication statusPublished - Jan 1 2015
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: Aug 16 2015Aug 22 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Other

Other24th IIR International Congress of Refrigeration, ICR 2015
CountryJapan
CityYokohama
Period8/16/158/22/15

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

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  • Cite this

    Ouchi, T., Hamamoto, Y., & Mori, H. (2015). Measurements of adsorption/desorption rate of a film adsorbent synthesized on heat transfer plate controlled by adsorbent temperature in water vapor. In 24th IIR International Congress of Refrigeration, ICR 2015 (pp. 599-606). (Refrigeration Science and Technology). International Institute of Refrigeration. https://doi.org/10.18462/iir.icr.2015.0940