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Comparisons of Nu correlations for H2O/LiBr solution in plate heat exchanger for triple effect absorption chiller application

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  • Song, Joo Young
  • Lee, Jae Won
  • Kang, Yong Tae

Abstract

In this study, heat transfer characteristics of single-phase Water/Lithium Bromide (H2O/LiBr) solution in a plate heat exchanger (PHE) is evaluated for absorption chiller applications. The plate heat exchanger is arranged with single-pass and counter flow, and the chevron angle of corrugated plate is a high theta of 78.5°. The H2O/LiBr solution is used as working fluid with wide mass concentration ranging between 52.40% and 64.92%, Reynolds number ranging between 27.29 and 255.1 and Prandtl number ranging between 4.59 and 19.26. All of experiments are conducted within ±10% energy balance error range. It is found that the convective heat transfer coefficients range from 0.68 kW/m2·K to 2.92 kW/m2·K. Based on the experimental data, empirical Nusselt number correlation of the H2O/LiBr solution in the 78.5° plate heat exchanger is developed within ±20% error range. The Nusselt number correlation of the present study is applicable to predict the heat transfer characteristics of the H2O/LiBr solution with a wide range of LiBr concentration for triple effect absorption chiller applications.

Suggested Citation

  • Song, Joo Young & Lee, Jae Won & Kang, Yong Tae, 2019. "Comparisons of Nu correlations for H2O/LiBr solution in plate heat exchanger for triple effect absorption chiller application," Energy, Elsevier, vol. 172(C), pages 852-860.
    • Handle: RePEc:eee:energy:v:172:y:2019:i:c:p:852-860
    DOI: 10.1016/j.energy.2019.02.013
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    Citations

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    Cited by:

    1. Junhyeok Yong & Junggyun Ham & Ohkyung Kwon & Honghyun Cho, 2021. "Experimental Investigation of the Heat Transfer Characteristics of Plate Heat Exchangers Using LiBr/Water as Working Fluid," Energies, MDPI, vol. 14(20), pages 1-15, October.
    2. Kadam, Sambhaji T. & Gkouletsos, Dimitris & Hassan, Ibrahim & Rahman, Mohammad Azizur & Kyriakides, Alexios-Spyridon & Papadopoulos, Athanasios I. & Seferlis, Panos, 2020. "Investigation of binary, ternary and quaternary mixtures across solution heat exchanger used in absorption refrigeration and process modifications to improve cycle performance," Energy, Elsevier, vol. 198(C).
    3. Zhai, Chong & Wu, Wei, 2021. "Performance optimization and comparison towards compact and efficient absorption refrigeration system with conventional and emerging absorbers/desorbers," Energy, Elsevier, vol. 229(C).
    4. Razmi, Amir Reza & Arabkoohsar, Ahmad & Nami, Hossein, 2020. "Thermoeconomic analysis and multi-objective optimization of a novel hybrid absorption/recompression refrigeration system," Energy, Elsevier, vol. 210(C).
    5. Zhai, Chong & Wu, Wei, 2023. "Experimental parameter study and correlation development of microchannel membrane-based absorption process for efficient thermal cooling with high compactness," Energy, Elsevier, vol. 279(C).
    6. Sehgal, Shitiz & Alvarado, Jorge L. & Hassan, Ibrahim G. & Kadam, Sambhaji T., 2021. "A comprehensive review of recent developments in falling-film, spray, bubble and microchannel absorbers for absorption systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 142(C).

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