The study on the critical heat flux and pool boiling heat transfer coefficient of binary nanofluids (H2O/LiBr + Al2O 3)

Jung Yeul Jung; Eung Surk Kim; Youngsuk Nam; Yong Tae Kang

doi:10.1016/j.ijrefrig.2012.11.021

The study on the critical heat flux and pool boiling heat transfer coefficient of binary nanofluids (H₂O/LiBr + Al₂O ₃)

Jung Yeul Jung, Eung Surk Kim, Youngsuk Nam, Yong Tae Kang

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

28 Citations (Scopus)

Abstract

In this study, we measured the critical heat flux (CHF) and boiling heat transfer coefficient of H₂O/LiBr-based binary nanofluids. By using the PVA (polyvinyl alcohol) as a stabilizer, Al₂O₃ nanoparticles could be stably dispersed in H₂O/LiBr. The plate copper heater (10 × 10 mm²) is used as the boiling surface. The concentration of nanoparticle varies 0-0.1 vol%, dispersed in H ₂O/LiBr solutions (3, 7 and 10 wt% of LiBr). The results show that the boiling heat transfer coefficient of the binary nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. We obtained an enhanced CHF of ∼48.5% (compared to the base fluid) with the 0.1 vol% Al₂O₃ in 10 wt% LiBr aqueous solution.

Original language	English
Pages (from-to)	1056-1061
Number of pages	6
Journal	International Journal of Refrigeration
Volume	36
Issue number	3
DOIs	https://doi.org/10.1016/j.ijrefrig.2012.11.021
Publication status	Published - 2013 May
Externally published	Yes

Bibliographical note

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

Keywords

Binary mixture
Heat flux
Heat transfer coefficient
Particles
Pool boiling

ASJC Scopus subject areas

Building and Construction
Mechanical Engineering

Access to Document

10.1016/j.ijrefrig.2012.11.021

Cite this

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title = "The study on the critical heat flux and pool boiling heat transfer coefficient of binary nanofluids (H2O/LiBr + Al2O 3)",

abstract = "In this study, we measured the critical heat flux (CHF) and boiling heat transfer coefficient of H2O/LiBr-based binary nanofluids. By using the PVA (polyvinyl alcohol) as a stabilizer, Al2O3 nanoparticles could be stably dispersed in H2O/LiBr. The plate copper heater (10 × 10 mm2) is used as the boiling surface. The concentration of nanoparticle varies 0-0.1 vol%, dispersed in H 2O/LiBr solutions (3, 7 and 10 wt% of LiBr). The results show that the boiling heat transfer coefficient of the binary nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. We obtained an enhanced CHF of ∼48.5% (compared to the base fluid) with the 0.1 vol% Al2O3 in 10 wt% LiBr aqueous solution.",

keywords = "Binary mixture, Heat flux, Heat transfer coefficient, Particles, Pool boiling",

author = "Jung, {Jung Yeul} and Kim, {Eung Surk} and Youngsuk Nam and Kang, {Yong Tae}",

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

year = "2013",

month = may,

doi = "10.1016/j.ijrefrig.2012.11.021",

language = "English",

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pages = "1056--1061",

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AU - Jung, Jung Yeul

AU - Kim, Eung Surk

AU - Nam, Youngsuk

AU - Kang, Yong Tae

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

PY - 2013/5

Y1 - 2013/5

N2 - In this study, we measured the critical heat flux (CHF) and boiling heat transfer coefficient of H2O/LiBr-based binary nanofluids. By using the PVA (polyvinyl alcohol) as a stabilizer, Al2O3 nanoparticles could be stably dispersed in H2O/LiBr. The plate copper heater (10 × 10 mm2) is used as the boiling surface. The concentration of nanoparticle varies 0-0.1 vol%, dispersed in H 2O/LiBr solutions (3, 7 and 10 wt% of LiBr). The results show that the boiling heat transfer coefficient of the binary nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. We obtained an enhanced CHF of ∼48.5% (compared to the base fluid) with the 0.1 vol% Al2O3 in 10 wt% LiBr aqueous solution.

AB - In this study, we measured the critical heat flux (CHF) and boiling heat transfer coefficient of H2O/LiBr-based binary nanofluids. By using the PVA (polyvinyl alcohol) as a stabilizer, Al2O3 nanoparticles could be stably dispersed in H2O/LiBr. The plate copper heater (10 × 10 mm2) is used as the boiling surface. The concentration of nanoparticle varies 0-0.1 vol%, dispersed in H 2O/LiBr solutions (3, 7 and 10 wt% of LiBr). The results show that the boiling heat transfer coefficient of the binary nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. We obtained an enhanced CHF of ∼48.5% (compared to the base fluid) with the 0.1 vol% Al2O3 in 10 wt% LiBr aqueous solution.

KW - Binary mixture

KW - Heat flux

KW - Heat transfer coefficient

KW - Particles

KW - Pool boiling

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