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    Experimental Investigation of a Mechanical Vapour Compression Chiller at Elevated Chilled Water Temperatures

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    1-s2.0-S1359431117321531-main.pdf
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    Type
    Article
    Authors
    Thu, Kyaw
    Saththasivam, Jayaprakash cc
    SAHA, Bidyut Baran
    Chua, Kian Jon
    Srinivasa Murthy, S.
    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
    2017-05-18
    Online Publication Date
    2017-05-18
    Print Publication Date
    2017-08
    Permanent link to this record
    http://hdl.handle.net/10754/623678
    
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    Abstract
    The performance of a Mechanical Vapour Compression (MVC) chiller is experimentally investigated under operating conditions suitable for sensible cooling. With the emergence of the energy efficient dehumidification systems, it is possible to decouple the latent load from the MVC chillers which can be operated at higher chilled water temperature for handling sensible cooling load. In this article, the performance of the chiller is evaluated at the elevated chilled water outlet temperatures (7 – 17° C) at various coolant temperatures (28 – 32° C) and flow rates (ΔT = 4 and 5° C) for both full- and part-load conditions. Keeping the performance at the AHRI standard as the baseline condition, the efficacy of the chiller in terms of compression ratio, cooling capacity and COP at aforementioned conditions is quantified experimentally. It is observed that for each one-degree Celsius increase in the chilled water temperature, the COP of the chiller improves by about 3.5% whilst the cooling capacity improvement is about 4%. For operation at 17° C chilled water outlet temperature, the improvements in COP and cooling capacity are between 37 – 40% and 40 – 45%, respectively, compared to the performance at the AHRI standards. The performance of the MVC chiller at the abovementioned operation conditions is mapped on the chiller performance characteristic chart.
    Citation
    Thu K, Saththasivam J, Saha BB, Chua KJ, Srinivasa Murthy S, et al. (2017) Experimental Investigation of a Mechanical Vapour Compression Chiller at Elevated Chilled Water Temperatures. Applied Thermal Engineering. Available: http://dx.doi.org/10.1016/j.applthermaleng.2017.05.091.
    Sponsors
    The authors gratefully acknowledge the Kyushu University Program for Leading Graduate School, Green Asia Education Center and the National Research Foundation (NRF), Singapore, under the research grant (R-265-000-466-281) for their financial support to conduct this study.
    Publisher
    Elsevier BV
    Journal
    Applied Thermal Engineering
    DOI
    10.1016/j.applthermaleng.2017.05.091
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S1359431117321531
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.applthermaleng.2017.05.091
    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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