Heat and mass transfer enhancement for falling film absorption process by SiO 2 binary nanofluids

Hyundae Kim; Jinhee Jeong; Yong Tae Kang

doi:10.1016/j.ijrefrig.2011.11.018

Heat and mass transfer enhancement for falling film absorption process by SiO ₂ binary nanofluids

Hyundae Kim, Jinhee Jeong, Yong Tae Kang

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

72 Citations (Scopus)

Abstract

The objectives of this study are to visualize the dispersion of nano-particles in binary nanofluids, to find the effect of key parameters such as SiO ₂ nano-particles concentration on the distribution stability in the H ₂O/LiBr nanofluids, and to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids. The binary nanofluids are H ₂O/LiBr with SiO ₂ nano-particle. The key parameters are the base fluid concentration of LiBr, the concentration of SiO ₂ nano-particles in vol%, and kinds of additives. It is found that the concentration of SiO ₂ nano-particles should be less than 0.01 regardless of the existence of the distribution stabilizer. It is also found that the maximum improvements of heat transfer rate and mass transfer rate reach 46.8% and 18%, respectively, when the concentration of SiO ₂ nano-particle is 0.005 vol%.

Original language	English
Pages (from-to)	645-651
Number of pages	7
Journal	International Journal of Refrigeration
Volume	35
Issue number	3
DOIs	https://doi.org/10.1016/j.ijrefrig.2011.11.018
Publication status	Published - 2012 May
Externally published	Yes

Bibliographical note

Funding Information:
This work was partially supported by the National Research Foundation Grant (NRF) ( 2010-0029120 ).

Keywords

Absorption system
Distribution
Enhancement
Stability
Water-lithium bromide

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

Access to Document

10.1016/j.ijrefrig.2011.11.018

Cite this

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title = "Heat and mass transfer enhancement for falling film absorption process by SiO 2 binary nanofluids",

abstract = "The objectives of this study are to visualize the dispersion of nano-particles in binary nanofluids, to find the effect of key parameters such as SiO 2 nano-particles concentration on the distribution stability in the H 2O/LiBr nanofluids, and to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids. The binary nanofluids are H 2O/LiBr with SiO 2 nano-particle. The key parameters are the base fluid concentration of LiBr, the concentration of SiO 2 nano-particles in vol%, and kinds of additives. It is found that the concentration of SiO 2 nano-particles should be less than 0.01 regardless of the existence of the distribution stabilizer. It is also found that the maximum improvements of heat transfer rate and mass transfer rate reach 46.8% and 18%, respectively, when the concentration of SiO 2 nano-particle is 0.005 vol%.",

keywords = "Absorption system, Distribution, Enhancement, Stability, Water-lithium bromide",

author = "Hyundae Kim and Jinhee Jeong and Kang, {Yong Tae}",

note = "Funding Information: This work was partially supported by the National Research Foundation Grant (NRF) ( 2010-0029120 ). ",

year = "2012",

month = may,

doi = "10.1016/j.ijrefrig.2011.11.018",

language = "English",

volume = "35",

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journal = "International Journal of Refrigeration",

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TY - JOUR

T1 - Heat and mass transfer enhancement for falling film absorption process by SiO 2 binary nanofluids

AU - Kim, Hyundae

AU - Jeong, Jinhee

AU - Kang, Yong Tae

N1 - Funding Information: This work was partially supported by the National Research Foundation Grant (NRF) ( 2010-0029120 ).

PY - 2012/5

Y1 - 2012/5

N2 - The objectives of this study are to visualize the dispersion of nano-particles in binary nanofluids, to find the effect of key parameters such as SiO 2 nano-particles concentration on the distribution stability in the H 2O/LiBr nanofluids, and to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids. The binary nanofluids are H 2O/LiBr with SiO 2 nano-particle. The key parameters are the base fluid concentration of LiBr, the concentration of SiO 2 nano-particles in vol%, and kinds of additives. It is found that the concentration of SiO 2 nano-particles should be less than 0.01 regardless of the existence of the distribution stabilizer. It is also found that the maximum improvements of heat transfer rate and mass transfer rate reach 46.8% and 18%, respectively, when the concentration of SiO 2 nano-particle is 0.005 vol%.

AB - The objectives of this study are to visualize the dispersion of nano-particles in binary nanofluids, to find the effect of key parameters such as SiO 2 nano-particles concentration on the distribution stability in the H 2O/LiBr nanofluids, and to measure the vapor absorption rate and heat transfer rate for falling film flow of binary nanofluids. The binary nanofluids are H 2O/LiBr with SiO 2 nano-particle. The key parameters are the base fluid concentration of LiBr, the concentration of SiO 2 nano-particles in vol%, and kinds of additives. It is found that the concentration of SiO 2 nano-particles should be less than 0.01 regardless of the existence of the distribution stabilizer. It is also found that the maximum improvements of heat transfer rate and mass transfer rate reach 46.8% and 18%, respectively, when the concentration of SiO 2 nano-particle is 0.005 vol%.

KW - Absorption system

KW - Distribution

KW - Enhancement

KW - Stability

KW - Water-lithium bromide

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DO - 10.1016/j.ijrefrig.2011.11.018

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