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

Joo Young Song; Jae Won Lee; Yong Tae Kang

doi:10.1016/j.energy.2019.02.013

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

Joo Young Song, Jae Won Lee, Yong Tae Kang

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

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.

Original language	English
Pages (from-to)	852-860
Number of pages	9
Journal	Energy
Volume	172
DOIs	https://doi.org/10.1016/j.energy.2019.02.013
Publication status	Published - 2019 Apr 1

Keywords

Absorption cycle
HO/LiBr solution
Heat transfer coefficient
LiBr concentration
Plate heat exchanger

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
Modelling and Simulation
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Pollution
Energy(all)
Mechanical Engineering
Industrial and Manufacturing Engineering
Management, Monitoring, Policy and Law
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.energy.2019.02.013

Cite this

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

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.",

keywords = "Absorption cycle, HO/LiBr solution, Heat transfer coefficient, LiBr concentration, Plate heat exchanger",

author = "Song, {Joo Young} and Lee, {Jae Won} and Kang, {Yong Tae}",

note = "Funding Information: This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 10060218 , The development of cooling capacity 200RT class tripple effect gas fired absorption chiller). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

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doi = "10.1016/j.energy.2019.02.013",

language = "English",

volume = "172",

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TY - JOUR

T1 - Comparisons of Nu correlations for H2O/LiBr solution in plate heat exchanger for triple effect absorption chiller application

AU - Song, Joo Young

AU - Lee, Jae Won

AU - Kang, Yong Tae

N1 - Funding Information: This work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE) (No. 10060218 , The development of cooling capacity 200RT class tripple effect gas fired absorption chiller). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2019/4/1

Y1 - 2019/4/1

N2 - 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.

AB - 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.

KW - Absorption cycle

KW - HO/LiBr solution

KW - Heat transfer coefficient

KW - LiBr concentration

KW - Plate heat exchanger

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