Steady-state investigation of water vapor adsorption for thermally driven adsorption based greenhouse air-conditioning system

Muhammad Sultan, Takahiko Miyazaki, Bidyut Baran Saha, Shigeru Koyama

    研究成果: Contribution to journalArticle査読

    29 被引用数 (Scopus)

    抄録

    In the present study, water vapor adsorption onto silica-gel, activated carbon powder (ACP) and activated carbon fiber (ACF) has been experimentally measured at 20, 30 and 50 °C using a volumetric method based adsorption measurement apparatus for greenhouse air-conditioning (AC). The Guggenheim-Anderson-De Boer and Dubinin-Astakhov adsorption models are used to fit the adsorption data of silica-gel and ACP/ACF, respectively. The isosteric heat of adsorption is determined by Clausius-Clapeyron relationship. The adsorbents are evaluated for low-temperature regeneration with aim to develop solar operated AC system for greenhouses. Ideal growth zone for agricultural products is determined by which the steady-state desiccant AC cycle is evaluated on the psychometric chart and adsorption isobars.Steady-state moisture cycled (MCSS) by each adsorbent is determined for demand category-I, II and III which are based on 60%, 40% and 20% relative humidity of dehumidified air, respectively. In case of demand category-I, the ACP enables maximum MCSS at all regeneration temperatures (Treg), ideally sitting at 47 °C. The ACF enables double MCSS as compared to silica-gel during demand category-II at Treg ≥59 °C. However, the silica-gel is found the only applicable adsorbent for the demand category-III.

    本文言語英語
    ページ(範囲)785-795
    ページ数11
    ジャーナルRenewable Energy
    86
    DOI
    出版ステータス出版済み - 2016

    All Science Journal Classification (ASJC) codes

    • Renewable Energy, Sustainability and the Environment

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