Comparisons of Nu correlations for H2O/LiBr solution in plate heat exchanger for triple effect absorption chiller application
- Authors
- Song, Joo Young; Lee, Jae Won; Kang, Yong Tae
- Issue Date
- 1-4월-2019
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Absorption cycle; Heat transfer coefficient; H2O/LiBr solution; LiBr concentration; Plate heat exchanger
- Citation
- ENERGY, v.172, pp.852 - 860
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY
- Volume
- 172
- Start Page
- 852
- End Page
- 860
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/66069
- DOI
- 10.1016/j.energy.2019.02.013
- ISSN
- 0360-5442
- 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 degrees. 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/m(2).K to 2.92 kW/m(2).K. Based on the experimental data, empirical Nusselt number correlation of the H2O/LiBr solution in the 78.5 degrees 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. (C) 2019 Elsevier Ltd. All rights reserved.
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