Adsorption characteristics of ethanol onto promising adsorbents for adsorption cooling applications

Ibrahim I. El-Sharkawy, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama

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

Abstract

Adsorption characteristics of ethanol onto three promising adsorbents have been investigated for developing high performance adsorption chillers. Adsorbents used in the present study are (i) parent Maxsorb III, (ii) two adsorbents based on spherical phenol resin treated with different mass ratios of KOH named as KOH4-PR and KOH6-PR. Adsorption equilibrium and kinetics of the assorted pairs have been measured using magnetic suspension adsorption measurement unit. The Dubinin-Astakhov (D-A) and Dubinin-Radushkevich (D-R) equations are used to fit adsorption isotherms whilst adsorption kinetics is presented by Fickian diffusion model. The pressure-temperature-concentration diagrams of the studied adsorbents have also been presented. Experimental results show that the adsorption equilibrium capacities of KOH6-PR/ethanol, KOH4-PR/ethanol and Maxsorb III/ethanol pairs are 2, 1.43 and 1.2 kg kg-1, respectively. The diffusion time constant of KOH4-PR is found to be higher than that of other studied adsorbents especially at the lower range of adsorption temperatures.

Original languageEnglish
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages3719-3726
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

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All Science Journal Classification (ASJC) codes

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

Cite this

El-Sharkawy, I. I., Miyazaki, T., Saha, B. B., & Koyama, S. (2015). Adsorption characteristics of ethanol onto promising adsorbents for adsorption cooling applications. In 24th IIR International Congress of Refrigeration, ICR 2015 (pp. 3719-3726). (Refrigeration Science and Technology). International Institute of Refrigeration. https://doi.org/10.18462/iir.icr.2015.0188