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    Simultaneous production of cooling and freshwater by an integrated indirect evaporative cooling and humidification-dehumidification desalination cycle

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    Simultaneous production of cooling and freshwater by an integrated indirect evaporative cooling and humidification-dehumidification desalination cycle.pdf
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    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Chen, Qian cc
    Burhan, Muhammad
    Shahzad, Muhammad Wakil cc
    Ybyraiymkul, Doskhan
    Akhtar, Faheem cc
    Ng, Kim Choon cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2020-07-10
    Online Publication Date
    2020-07-10
    Print Publication Date
    2020-10
    Embargo End Date
    2021-07-10
    Submitted Date
    2020-05-23
    Permanent link to this record
    http://hdl.handle.net/10754/664300
    
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    Abstract
    Cooling and freshwater represent two fundamental demands in hot and arid regions. This paper reports the integration of an indirect evaporative cooler (IEC) and a humidification-dehumidification desalination cycle (HDH) for the simultaneous production of cooling and freshwater. To take full advantage of system integration, the purge air from IEC is supplied to HDH to promote water productivity. A pilot IEC unit is firstly designed and tested to achieve the temperatures and humidity of the outlet air steams. Results reveal that the IEC unit is able to cool down the supply air to below 25 °C under different outdoor conditions, and the purge air temperature is also 5–10 ℃ lower than the intake air temperature. Employing the IEC purge air as the working air, the HDH cycle is then investigated analytically. Under the operation ranges considered, the freshwater productivity and gain-output ratio (GOR) are 25–125 L/hr and 1.6–2.5, respectively, which are higher than other HDH configurations operating under the same conditions. Finally, the performance of the combined IEC-HDH system is evaluated. The overall coefficient of performance (COP) and Second-law efficiency are found to be 2.1–2.5 and 3–26%, respectively. Further improvement of efficiency can be achieved by integrating with adsorption or vapor compression refrigeration cycles.
    Citation
    Chen, Q., Burhan, M., Shahzad, M. W., Ybyraiymkul, D., Akhtar, F. H., & Ng, K. C. (2020). Simultaneous production of cooling and freshwater by an integrated indirect evaporative cooling and humidification-dehumidification desalination cycle. Energy Conversion and Management, 221, 113169. doi:10.1016/j.enconman.2020.113169
    Sponsors
    This research was supported by the Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology (KAUST).
    Publisher
    Elsevier BV
    Journal
    Energy Conversion and Management
    DOI
    10.1016/j.enconman.2020.113169
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0196890420307135
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.enconman.2020.113169
    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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