Influences of nozzle-plate spacing on boiling heat transfer of confined planar dielectric liquid impinging jet

Chang Hwan Shin, Kyung Min Kim, Sung Hwan Lim, Hyung Hee Cho

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We have investigated the single-phase and boiling heat transfer of dielectric liquid under the Reynolds numbers (2000, 3000 and 5000) and under nozzle-plate spacing (H/W; 0.5, 1.0 and 4.0) in a submerged impinging jet system. The boiling incipience increases in proportion to the Reynolds number and in inverse proportion to the nozzle-to-surface spacing. The critical heat flux at H/W = 1.0 is lower than those of outer spacings, such as H/W = 0.5 and 4.0, due to the characteristics of the jet impingement heat transfer distribution. We suggest a correlation equation of nozzle-plate spacing (H/W) having the lowest CHF for various jet velocities.

Original languageEnglish
Pages (from-to)5293-5301
Number of pages9
JournalInternational Journal of Heat and Mass Transfer
Volume52
Issue number23-24
DOIs
Publication statusPublished - 2009 Nov 1

Fingerprint

Dielectric liquids
boiling
Boiling liquids
nozzles
Nozzles
heat transfer
spacing
Heat transfer
Reynolds number
liquids
proportion
jet impingement
Heat flux
heat flux

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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title = "Influences of nozzle-plate spacing on boiling heat transfer of confined planar dielectric liquid impinging jet",
abstract = "We have investigated the single-phase and boiling heat transfer of dielectric liquid under the Reynolds numbers (2000, 3000 and 5000) and under nozzle-plate spacing (H/W; 0.5, 1.0 and 4.0) in a submerged impinging jet system. The boiling incipience increases in proportion to the Reynolds number and in inverse proportion to the nozzle-to-surface spacing. The critical heat flux at H/W = 1.0 is lower than those of outer spacings, such as H/W = 0.5 and 4.0, due to the characteristics of the jet impingement heat transfer distribution. We suggest a correlation equation of nozzle-plate spacing (H/W) having the lowest CHF for various jet velocities.",
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Influences of nozzle-plate spacing on boiling heat transfer of confined planar dielectric liquid impinging jet. / Shin, Chang Hwan; Kim, Kyung Min; Lim, Sung Hwan; Cho, Hyung Hee.

In: International Journal of Heat and Mass Transfer, Vol. 52, No. 23-24, 01.11.2009, p. 5293-5301.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influences of nozzle-plate spacing on boiling heat transfer of confined planar dielectric liquid impinging jet

AU - Shin, Chang Hwan

AU - Kim, Kyung Min

AU - Lim, Sung Hwan

AU - Cho, Hyung Hee

PY - 2009/11/1

Y1 - 2009/11/1

N2 - We have investigated the single-phase and boiling heat transfer of dielectric liquid under the Reynolds numbers (2000, 3000 and 5000) and under nozzle-plate spacing (H/W; 0.5, 1.0 and 4.0) in a submerged impinging jet system. The boiling incipience increases in proportion to the Reynolds number and in inverse proportion to the nozzle-to-surface spacing. The critical heat flux at H/W = 1.0 is lower than those of outer spacings, such as H/W = 0.5 and 4.0, due to the characteristics of the jet impingement heat transfer distribution. We suggest a correlation equation of nozzle-plate spacing (H/W) having the lowest CHF for various jet velocities.

AB - We have investigated the single-phase and boiling heat transfer of dielectric liquid under the Reynolds numbers (2000, 3000 and 5000) and under nozzle-plate spacing (H/W; 0.5, 1.0 and 4.0) in a submerged impinging jet system. The boiling incipience increases in proportion to the Reynolds number and in inverse proportion to the nozzle-to-surface spacing. The critical heat flux at H/W = 1.0 is lower than those of outer spacings, such as H/W = 0.5 and 4.0, due to the characteristics of the jet impingement heat transfer distribution. We suggest a correlation equation of nozzle-plate spacing (H/W) having the lowest CHF for various jet velocities.

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