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    Thermal conductivity measurements and correlations of pure R1243zf and binary mixtures of R32 + R1243zf and R32 + R1234yf

    Access Status
    Fulltext not available
    Embargo Lift Date
    2023-07-22
    Authors
    Kim, D.
    Liu, H.
    Yang, X.
    Yang, F.
    Morfitt, J.
    Arami-Niya, Arash
    Ryu, M.
    Duan, Y.
    May, E.F.
    Date
    2021
    Type
    Journal Article
    
    Metadata
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    Citation
    Kim, D. and Liu, H. and Yang, X. and Yang, F. and Morfitt, J. and Arami-Niya, A. and Ryu, M. et al. 2021. Thermal conductivity measurements and correlations of pure R1243zf and binary mixtures of R32 + R1243zf and R32 + R1234yf. International Journal of Refrigeration. 131: pp. 990-999.
    Source Title
    International Journal of Refrigeration
    DOI
    10.1016/j.ijrefrig.2021.07.019
    ISSN
    0140-7007
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/IC150100019
    URI
    http://hdl.handle.net/20.500.11937/87785
    Collection
    • Curtin Research Publications
    Abstract

    Thermal conductivity measurements of pure R1243zf and binary mixtures of R32 + R1243zf and R32 + R1234yf were conducted in the homogeneous liquid and vapour phases with a transient hot-wire technique. The mole fractions of R32 are 0.25, 0.50, and 0.75 in both binary systems. The temperature range of the measurements was from (264.1 to 405.6) K with pressures ranging between (0.9 and 6.1) MPa. The transient hot-wire apparatus was validated with measurements of pure CO2 in both the liquid and vapour regions. The relative combined expanded uncertainty (k = 2) in the experimental thermal conductivity was approximately 2.0 %. The relative deviations of the measured thermal conductivities from those calculated using the extended corresponding states (ECS) model as implemented in the software REFPROP 10 were between (−13 and 10) % in the vapour phase, and between (−14 and 1) % in the liquid phase. Additionally, the performance of a new approach to predicting fluid transport properties, the residual entropy scaling model incorporating the cubic-plus-association equation of state (RES-CPA model) was tested for these mixtures by first determining the scaling parameter of pure R1243zf. The RES-CPA model was then able to predict the mixture thermal conductivities generally within 10 %, which is similar to the ECS model; however no additional parameters were introduced to the RES-CPA model to describe binary interactions.

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