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 - 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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