Effects of heater size and working fluids on nucleate boiling heat transfer

Kim, J.H.; You, Seungkwon; Pak, Jisong

doi:10.1016/j.ijheatmasstransfer.2005.08.001

Cited by 24 publications

(5 citation statements)

References 9 publications

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“…It is clear from Fig. 2(b) and (c) that the thinner wire requires a higher heat flux to initiate nucleate boiling across the range as found by Kim [4].…”

Section: Resultssupporting

confidence: 60%

On the effects of thermocapillary driven oscillations on bubble growth during boiling of FC-72 on a thin wire

Duursma

Jiang

Sefiane

et al. 2011

International Journal of Thermal Sciences

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“…It is clear from Fig. 2(b) and (c) that the thinner wire requires a higher heat flux to initiate nucleate boiling across the range as found by Kim [4].…”

Section: Resultssupporting

confidence: 60%

On the effects of thermocapillary driven oscillations on bubble growth during boiling of FC-72 on a thin wire

Duursma

Jiang

Sefiane

et al. 2011

International Journal of Thermal Sciences

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“…This error is due to light rays bending during their propagation through a too large high refractive index gradient area. In order to get rid of this artifact, different groups attempted to localize the CL trough the thermal image in the solid substrate using different methods like thermochromic liquid crystals (Sodtke et al 2006), infrared camera (Golobic et al 2007), several sensor built into the wall (Kim et al 2006). This paper presents a new strategy that allows to get rid of the thermally induced optical errors.…”

Section: Introductionmentioning

confidence: 99%

Nucleate Boiling on a Single Site: Contact Angle Analysis for a Quasi-2D Growing Vapour Bubble

Serret

Guignard

Tadrist

2008

Microgravity Sci. Technol

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Heat transfer prediction under boiling condition is still unresolved. In this paper, a basic study on bubble growth is carried out. Recent works show that contact line region plays an important role for heat and mass transfer in nucleate boiling regime. Three dimension experimental set-up lead to a mirage effect which disturbs measurements. To overcome this problem, a new quasi two dimensional experimental set-up is designed. This Hele-Shaw like configuration allows measuring the contact angle and contact line displacement during the bubble growth. A noticeable behavior of the contact angle is observed, and the influence of the sub-cooling level on the bubble growth rate and the contact angle value is studied.

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“…[56] and Wei and Honda [57] used various pins and micro cavities respectively and have shown they both improve heat transfer, but as the concentration of these structures increased, the bubbles formed coalesce more easily and enhancement is lost. Kim et al [58] and You et al [59] use platinum wires immersed in various fluids and have shown that the geometry alters the bubble nucleation size and departure frequency.…”

Section: Pool Boiling/chf Correlationsmentioning

confidence: 99%

Experimental and Numerical Study of the Effects of Asymmetric Micro Ratchets on Pool Boiling Performance

Brumfield

Park

2013

Volume 10: Micro- And Nano-Systems Engineering and Packaging

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Nucleate boiling is an attractive method for achieving high heat flux at low superheat temperatures. It is frequently used for industrial applications such as heat exchangers and is being considered to cool advanced central processing units (CPU) which produce heat fluxes on the order of 1 MW/m2 and are becoming increasingly less efficient to cool via forced conduction of air. The issues with implementing nucleate boiling as a cooling mechanism lies in the difficulty of quantifying the complex and numerous mechanisms which control the process. A comprehensive nucleate boiling model has yet to be formulated and will be required in order to safely and reliably cool high performance electronics. Spatially periodic systems with localized asymmetric surface structures (ratchets) can induce directed transport of matter (liquid/particles) in the absence of net force. It was hypothesized that ratchets may enhance pool boiling heat transfer by aiding in the removal of vapor which forms on the heated surface. Therefore, experiments on pool boiling using asymmetric micro ratchets of various geometries, with FC-72 as the working fluid, were investigated. Additionally, various numerical pool boiling simulations were performed using FLUENT to better understand the underlying physical principles behind pool boiling.

show abstract

Effects of heater size and working fluids on nucleate boiling heat transfer

Cited by 24 publications

References 9 publications

On the effects of thermocapillary driven oscillations on bubble growth during boiling of FC-72 on a thin wire

On the effects of thermocapillary driven oscillations on bubble growth during boiling of FC-72 on a thin wire

Nucleate Boiling on a Single Site: Contact Angle Analysis for a Quasi-2D Growing Vapour Bubble

Experimental and Numerical Study of the Effects of Asymmetric Micro Ratchets on Pool Boiling Performance

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