Experimental study of nucleate boiling heat transfer enhancement in a confined space

Zhao, Yaohua; Tsuruta, Takaharu; Ji, Chaoyue

doi:10.1016/s0894-1777(03)00076-1

Cited by 34 publications

(6 citation statements)

References 11 publications

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“…However, the confined space also promotes bubble coalescence, resulting in a lower CHF. To prevent the decrease of the CHF, mesh screens have been used to allow the boiling bubbles to easily escape (Zhao et al, 2003). A different approach to enhance heat transfer, including boiling heat transfer, is to apply ultrasound (Legay et al, 2011).…”

Section: In a Boiling Bubble Resonatormentioning

confidence: 99%

Effect of the gap height between the vibration plate and heating surface on boiling heat transfer in a boiling bubble resonator

Unno

Yuki

Taniguchi

et al. 2021

JTST

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Section: In a Boiling Bubble Resonatormentioning

confidence: 99%

Effect of the gap height between the vibration plate and heating surface on boiling heat transfer in a boiling bubble resonator

Unno

Yuki

Taniguchi

et al. 2021

JTST

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“…The effect of the gap size on the vapor bubble can be characterized by Bond number, Bo, defined as the ratio of the characteristic length to the confined space, s, and the capillary length, [10]. Guglielmini et al [11] analysed the combined effects of surface orientation and gap size on the boiling heat transfer and CHF of HFE 7100 on a smooth copper surface.…”

Section: Introductionmentioning

confidence: 99%

A predictive model for confined and unconfined nucleate boiling heat transfer coefficient

Kiyomura

Mogaji

Manetti

et al. 2017

Applied Thermal Engineering

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h i g h l i g h t s An analysis of the influences of different parameters on the boiling phenomenon was performed. A new correlation to predict the pool boiling heat transfer coefficient is presented. The effect of different working fluids, gap size and surface roughness were considered. The proposed correlation predicts accurately the boiling heat transfer of fluids under confined and unconfined conditions.

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“…Surprisingly when the water is at 0°C the flame-side of the wall is slightly hotter than when the water is 100°C. This is due to the fact the convective heat transfer of naturally convecting cold water is much lower than that of nucleate boiling water [31,32]. The equations also show the heat flow across the wall is inversely related to the wall thickness.…”

Section: Heat Transfer Theorymentioning

confidence: 97%

Fire resistance of additively manufactured water filled polymer parts

Brooks

Wright

Harris

et al. 2018

Additive Manufacturing

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This paper introduces the concept of additively manufactured (AM) water filled parts (WFPs). By combining the energy absorbing properties of water with polymers it is possible to significantly improve time to ignition of AM parts with open internal structures. Theory relating the flame temperature to the maximum wall temperature of WFPs is developed. A range of water-polymer configurations are presented as a basis for WFP designs. Three separate thermal experiments were conducted to test different aspects of the WFPs. The time to ignition for cone calorimetry samples was extended 794% over plain photopolymers. Case studies were used to demonstrate the effectiveness of WFPs with complex shapes. The results of thermo-fluid finite element simulations showed good agreement with experimental observations and provide a useful tool for the evaluation and optimisation of WFP designs. The fire resistance of thin walled structures were found to be significantly improved by adding water. The water filling strategy was found to be more effective than adding intumescent coatings. Finally further work and recommendations are discussed.

show abstract

Experimental study of nucleate boiling heat transfer enhancement in a confined space

Cited by 34 publications

References 11 publications

Effect of the gap height between the vibration plate and heating surface on boiling heat transfer in a boiling bubble resonator

Effect of the gap height between the vibration plate and heating surface on boiling heat transfer in a boiling bubble resonator

A predictive model for confined and unconfined nucleate boiling heat transfer coefficient

Fire resistance of additively manufactured water filled polymer parts

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