Heat and mass transfer enhancement of binary nanofluids for H2O/LiBr falling film absorption process

Yong Tae Kang; Hyun June Kim; Kang Il Lee

doi:10.1016/j.ijrefrig.2007.10.008

Heat and mass transfer enhancement of binary nanofluids for H₂O/LiBr falling film absorption process

Yong Tae Kang, Hyun June Kim, Kang Il Lee

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

148 Citations (Scopus)

Abstract

The objectives of this study are to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids, and to compare the enhancement of heat transfer and mass transfer under the same conditions of nanofluids. The key parameters are the base fluid concentration of LiBr, the concentration of nanoparticles in weight %, and nanoparticle constituents. The binary nanofluids are H₂O/LiBr solution with nanoparticles of Fe and Carbon nanotubes (CNT) with the concentrations of 0.0, 0.01 and 0.1 wt %. The vapor absorption rate increases with increasing the solution mass flow rate and the concentration of Fe and CNT nanoparticles. It is found that the mass transfer enhancement is much more significant than the heat transfer enhancement in the binary nanofluids with Fe and CNT. It is also found that the mass transfer enhancement from the CNT nanoparticles becomes higher than that from the Fe nanoparticles. Therefore, the CNT is a better candidate than Fe nanoparticles for absorption performance enhancement in H₂O/LiBr absorption system.

Original language	English
Pages (from-to)	850-856
Number of pages	7
Journal	International Journal of Refrigeration
Volume	31
Issue number	5
DOIs	https://doi.org/10.1016/j.ijrefrig.2007.10.008
Publication status	Published - 2008 Aug
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the Korea Research Foundation Grant by the Korean Government (MOEHRD) (KRF-2006-013-D00190). This work was conducted during the sabbatical year (September 01, 2007–August 31, 2007) supported by Kyung Hee University. The authors thank Professor Gang Chen, Warren and Towneley Rohsenow Professor, Department of Mechanical Engineering, MIT for his invaluable comments and suggestion during the data analysis.

Keywords

Absorption
Absorption system
Additive
Enhancement
Falling film
Heat transfer
Mass transfer
Particle
Water-lithium bromide

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

Access to Document

10.1016/j.ijrefrig.2007.10.008

Cite this

@article{cce69f9ae7864000acf43424b186a27c,

title = "Heat and mass transfer enhancement of binary nanofluids for H2O/LiBr falling film absorption process",

abstract = "The objectives of this study are to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids, and to compare the enhancement of heat transfer and mass transfer under the same conditions of nanofluids. The key parameters are the base fluid concentration of LiBr, the concentration of nanoparticles in weight %, and nanoparticle constituents. The binary nanofluids are H2O/LiBr solution with nanoparticles of Fe and Carbon nanotubes (CNT) with the concentrations of 0.0, 0.01 and 0.1 wt %. The vapor absorption rate increases with increasing the solution mass flow rate and the concentration of Fe and CNT nanoparticles. It is found that the mass transfer enhancement is much more significant than the heat transfer enhancement in the binary nanofluids with Fe and CNT. It is also found that the mass transfer enhancement from the CNT nanoparticles becomes higher than that from the Fe nanoparticles. Therefore, the CNT is a better candidate than Fe nanoparticles for absorption performance enhancement in H2O/LiBr absorption system.",

keywords = "Absorption, Absorption system, Additive, Enhancement, Falling film, Heat transfer, Mass transfer, Particle, Water-lithium bromide",

author = "Kang, {Yong Tae} and Kim, {Hyun June} and Lee, {Kang Il}",

note = "Funding Information: This work was supported by the Korea Research Foundation Grant by the Korean Government (MOEHRD) (KRF-2006-013-D00190). This work was conducted during the sabbatical year (September 01, 2007–August 31, 2007) supported by Kyung Hee University. The authors thank Professor Gang Chen, Warren and Towneley Rohsenow Professor, Department of Mechanical Engineering, MIT for his invaluable comments and suggestion during the data analysis.",

year = "2008",

month = aug,

doi = "10.1016/j.ijrefrig.2007.10.008",

language = "English",

volume = "31",

pages = "850--856",

journal = "International Journal of Refrigeration",

issn = "0140-7007",

publisher = "Elsevier Ltd",

number = "5",

}

TY - JOUR

T1 - Heat and mass transfer enhancement of binary nanofluids for H2O/LiBr falling film absorption process

AU - Kang, Yong Tae

AU - Kim, Hyun June

AU - Lee, Kang Il

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant by the Korean Government (MOEHRD) (KRF-2006-013-D00190). This work was conducted during the sabbatical year (September 01, 2007–August 31, 2007) supported by Kyung Hee University. The authors thank Professor Gang Chen, Warren and Towneley Rohsenow Professor, Department of Mechanical Engineering, MIT for his invaluable comments and suggestion during the data analysis.

PY - 2008/8

Y1 - 2008/8

N2 - The objectives of this study are to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids, and to compare the enhancement of heat transfer and mass transfer under the same conditions of nanofluids. The key parameters are the base fluid concentration of LiBr, the concentration of nanoparticles in weight %, and nanoparticle constituents. The binary nanofluids are H2O/LiBr solution with nanoparticles of Fe and Carbon nanotubes (CNT) with the concentrations of 0.0, 0.01 and 0.1 wt %. The vapor absorption rate increases with increasing the solution mass flow rate and the concentration of Fe and CNT nanoparticles. It is found that the mass transfer enhancement is much more significant than the heat transfer enhancement in the binary nanofluids with Fe and CNT. It is also found that the mass transfer enhancement from the CNT nanoparticles becomes higher than that from the Fe nanoparticles. Therefore, the CNT is a better candidate than Fe nanoparticles for absorption performance enhancement in H2O/LiBr absorption system.

AB - The objectives of this study are to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids, and to compare the enhancement of heat transfer and mass transfer under the same conditions of nanofluids. The key parameters are the base fluid concentration of LiBr, the concentration of nanoparticles in weight %, and nanoparticle constituents. The binary nanofluids are H2O/LiBr solution with nanoparticles of Fe and Carbon nanotubes (CNT) with the concentrations of 0.0, 0.01 and 0.1 wt %. The vapor absorption rate increases with increasing the solution mass flow rate and the concentration of Fe and CNT nanoparticles. It is found that the mass transfer enhancement is much more significant than the heat transfer enhancement in the binary nanofluids with Fe and CNT. It is also found that the mass transfer enhancement from the CNT nanoparticles becomes higher than that from the Fe nanoparticles. Therefore, the CNT is a better candidate than Fe nanoparticles for absorption performance enhancement in H2O/LiBr absorption system.

KW - Absorption

KW - Absorption system

KW - Additive

KW - Enhancement

KW - Falling film

KW - Heat transfer

KW - Mass transfer

KW - Particle

KW - Water-lithium bromide

UR - http://www.scopus.com/inward/record.url?scp=44649186805&partnerID=8YFLogxK

U2 - 10.1016/j.ijrefrig.2007.10.008

DO - 10.1016/j.ijrefrig.2007.10.008

M3 - Article

AN - SCOPUS:44649186805

SN - 0140-7007

VL - 31

SP - 850

EP - 856

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

IS - 5

ER -