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    Performance of single- and double-effect operable mechanical vapor recompression desalination system adaptable to variable wind energy

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    Type
    Article
    Authors
    Kim, Yeongmin
    Kim, Dong kook
    Amano, Yoshiharu
    Ng, Kim Choon cc
    Chun, Wongee
    KAUST Department
    Environmental Science and Engineering Program
    Water Desalination and Reuse Research Center (WDRC)
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2019-06-03
    Embargo End Date
    2020-07-01
    Permanent link to this record
    http://hdl.handle.net/10754/656426
    
    Metadata
    Show full item record
    Abstract
    This paper deals with the development and operation of a mechanical vapor recompression (MVR) desalination system with improved energy efficiency in harnessing wind energy, which is non-dispatchable. Its design, construction, and operation details are presented in this paper. Especially, the main focus of developing the system was on the operation of the system in conjunction with variable loads of new and renewable power sources, in particular, varying wind power. That is, the present work has been carried out to assess the feasibility of its operation in light of capacity modulation to match the power generated under various wind speeds. Optimal operation modes of the system were studied, in which single- and double-effect operations were analyzed for their improvement in energy efficiency. The compression ratio of the proposed MVR system was 1.55 at an inverter speed of 55 Hz, which agreed well with its design value. Operation of the main heat exchanger remained stable within the limits of its operable range, although the temperature differences in the main heat exchanger did not remain constant because of the pressure variations in the evaporator. The daily freshwater yield was between 28 and 51 tons. The power consumption per ton of freshwater produced was about 43 kW for a single effect and about 23 kW for a double effect, which is about twice as efficient.
    Citation
    Kim, Y., Kim, D., Amano, Y., Ng, K. C., & Chun, W. (2019). Performance of single- and double-effect operable mechanical vapor recompression desalination system adaptable to variable wind energy. International Journal of Energy Research. doi:10.1002/er.4594
    Sponsors
    The authors would like to acknowledge the support from the National Research Foundation of Korea through the Ministry of Science, ICT & Future Planning (Grant Number 2017R1A2A1A05001461).
    Publisher
    Wiley
    Journal
    International Journal of Energy Research
    DOI
    10.1002/er.4594
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1002/er.4594
    ae974a485f413a2113503eed53cd6c53
    10.1002/er.4594
    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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