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    Low Temperature Waste Heat Driven Refrigeration Cycle

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    Type
    Article
    Authors
    bin Ismail, Azhar
    Ang, Li
    Thu, Kyaw
    Ng, Kim Choon cc
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2016-01
    Permanent link to this record
    http://hdl.handle.net/10754/668639
    
    Metadata
    Show full item record
    Abstract
    This work explores the utilization of alternative refrigerants to the conventional silica gel + water adsorption pair for the adsorption chiller cycle. Water as the working fluid in the cycle limits the cooling temperatures to above 0°C due to its triple point. The activated carbon Maxsorb III is thus considered as the adsorbent due to its high micro-porous characteristics which lead to higher uptake values. The isotherms of this adsorbent with natural refrigerant Propane, n-butane as well as refrigerants HFC-134a, R507a and R-32 are fitted to the Dubinin-Astakhov equation and the parameters tabulated. With these isotherms, the performances of these pairs with respect to their Specific Cooling Effects (SCE) are compared for assorted cooling temperature, ambient temperature and waste temperature requirements. It was found that the natural refrigerant propane exhibits the most favorable operational conditions when the required cooling temperature is below 0°C. A mathematical model is thus developed to predict the cycle of the propane cycle and is found to show a good fit to the experimental results.
    Citation
    Bin Ismail, A., Ang, L., Thu, K., & Ng, K. C. (2016). Low Temperature Waste Heat Driven Refrigeration Cycle. Applied Mechanics and Materials, 819, 241–244. doi:10.4028/www.scientific.net/amm.819.241
    Publisher
    Trans Tech Publications, Ltd.
    Journal
    Applied Mechanics and Materials
    DOI
    10.4028/www.scientific.net/amm.819.241
    Additional Links
    https://www.scientific.net/AMM.819.241
    ae974a485f413a2113503eed53cd6c53
    10.4028/www.scientific.net/amm.819.241
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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