Stabilizer effect on CHF and boiling heat transfer coefficient of alumina/water nanofluids

Jung Yeul Jung; Eung Surk Kim; Yong Tae Kang

doi:10.1016/j.ijheatmasstransfer.2011.11.049

Stabilizer effect on CHF and boiling heat transfer coefficient of alumina/water nanofluids

Jung Yeul Jung, Eung Surk Kim, Yong Tae Kang

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

50 Citations (Scopus)

Abstract

We measured the critical heat flux (CHF) and boiling heat transfer coefficient (BHTC) of water-based Al ₂O ₃ (alumina) nanofluids. To elucidate the stabilizer effect on CHF and BHTC of alumina/water nanofluids, a polyvinyl alcohol (PVA) was used as a stabilizer. The plate copper heater (10 × 10 mm ²) is used as the boiling surface and the concentration of alumina nanoparticle varies 0-0.1 vol.%. The results show that the BHTC of the nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. It is found that the increase of CHF is directly proportional to the effective boiling surface area and the reduction of BHTC is mainly attributed to the blocking of the active nucleation cavity and the increase of the conduction resistance by the nanoparticle deposition on the boiling surface.

Original language	English
Pages (from-to)	1941-1946
Number of pages	6
Journal	International Journal of Heat and Mass Transfer
Volume	55
Issue number	7-8
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2011.11.049
Publication status	Published - 2012 Mar
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 nanofluid
Critical heat flux
Heat transfer coefficient
Pool boiling

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/j.ijheatmasstransfer.2011.11.049

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title = "Stabilizer effect on CHF and boiling heat transfer coefficient of alumina/water nanofluids",

abstract = "We measured the critical heat flux (CHF) and boiling heat transfer coefficient (BHTC) of water-based Al 2O 3 (alumina) nanofluids. To elucidate the stabilizer effect on CHF and BHTC of alumina/water nanofluids, a polyvinyl alcohol (PVA) was used as a stabilizer. The plate copper heater (10 × 10 mm 2) is used as the boiling surface and the concentration of alumina nanoparticle varies 0-0.1 vol.%. The results show that the BHTC of the nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. It is found that the increase of CHF is directly proportional to the effective boiling surface area and the reduction of BHTC is mainly attributed to the blocking of the active nucleation cavity and the increase of the conduction resistance by the nanoparticle deposition on the boiling surface.",

keywords = "Binary nanofluid, Critical heat flux, Heat transfer coefficient, Pool boiling",

author = "Jung, {Jung Yeul} and Kim, {Eung Surk} 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 = "2012",

month = mar,

doi = "10.1016/j.ijheatmasstransfer.2011.11.049",

language = "English",

volume = "55",

pages = "1941--1946",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

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TY - JOUR

T1 - Stabilizer effect on CHF and boiling heat transfer coefficient of alumina/water nanofluids

AU - Jung, Jung Yeul

AU - Kim, Eung Surk

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 - 2012/3

Y1 - 2012/3

N2 - We measured the critical heat flux (CHF) and boiling heat transfer coefficient (BHTC) of water-based Al 2O 3 (alumina) nanofluids. To elucidate the stabilizer effect on CHF and BHTC of alumina/water nanofluids, a polyvinyl alcohol (PVA) was used as a stabilizer. The plate copper heater (10 × 10 mm 2) is used as the boiling surface and the concentration of alumina nanoparticle varies 0-0.1 vol.%. The results show that the BHTC of the nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. It is found that the increase of CHF is directly proportional to the effective boiling surface area and the reduction of BHTC is mainly attributed to the blocking of the active nucleation cavity and the increase of the conduction resistance by the nanoparticle deposition on the boiling surface.

AB - We measured the critical heat flux (CHF) and boiling heat transfer coefficient (BHTC) of water-based Al 2O 3 (alumina) nanofluids. To elucidate the stabilizer effect on CHF and BHTC of alumina/water nanofluids, a polyvinyl alcohol (PVA) was used as a stabilizer. The plate copper heater (10 × 10 mm 2) is used as the boiling surface and the concentration of alumina nanoparticle varies 0-0.1 vol.%. The results show that the BHTC of the nanofluids becomes lower than that of the base fluid as the concentration of nanoparticles increases while CHF of it becomes higher. It is found that the increase of CHF is directly proportional to the effective boiling surface area and the reduction of BHTC is mainly attributed to the blocking of the active nucleation cavity and the increase of the conduction resistance by the nanoparticle deposition on the boiling surface.

KW - Binary nanofluid

KW - Critical heat flux

KW - Heat transfer coefficient

KW - Pool boiling

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U2 - 10.1016/j.ijheatmasstransfer.2011.11.049

DO - 10.1016/j.ijheatmasstransfer.2011.11.049

M3 - Article

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SN - 0017-9310

VL - 55

SP - 1941

EP - 1946

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 7-8

ER -

Stabilizer effect on CHF and boiling heat transfer coefficient of alumina/water nanofluids

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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