scholarly journals Microstructured Ceramic-Coated Carbon Nanotube Surfaces for High Heat Flux Pool Boiling

2019 ◽  
Vol 2 (9) ◽  
pp. 5538-5545 ◽  
Author(s):  
Hangbo Zhao ◽  
Susmita Dash ◽  
Navdeep Singh Dhillon ◽  
Sanha Kim ◽  
Bethany Lettiere ◽  
...  
Keyword(s):  
Heat Flux ◽  
Carbon Nanotube ◽  
Pool Boiling ◽  
High Heat ◽  
High Heat Flux ◽  
Coated Carbon

Role of macrolayer evaporation in pool boiling at high heat flux

1986 ◽  
Vol 29 (12) ◽  
pp. 1953-1961 ◽  
Author(s):  
A.M. Bhat ◽  
J.S. Saini ◽  
R. Prakash
Keyword(s):  
Heat Flux ◽  
Pool Boiling ◽  
High Heat ◽  
High Heat Flux

Observations of the Critical Heat Flux Process During Pool Boiling of FC-72

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
J. Jung ◽  
S. J. Kim ◽  
J. Kim
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Critical Heat Flux ◽  
Pool Boiling ◽  
High Heat ◽  
Line Length ◽  
Boiling Curve ◽  
High Heat Flux ◽  
Transfer Coefficients ◽  
Ir Camera

Experimental work was undertaken to investigate the process by which pool-boiling critical heat flux (CHF) occurs using an IR camera to measure the local temperature and heat transfer coefficients on a heated silicon surface. The wetted area fraction (WF), the contact line length density (CLD), the frequency between dryout events, the lifetime of the dry patches, the speed of the advancing and receding contact lines, the dry patch size distribution on the surface, and the heat transfer from the liquid-covered areas were measured throughout the boiling curve. Quantitative analysis of this data at high heat flux and transition through CHF revealed that the boiling curve can simply be obtained by weighting the heat flux from the liquid-covered areas by WF. CHF mechanisms proposed in the literature were evaluated against the observations.

IR thermographic investigation of nucleate pool boiling at high heat flux

2016 ◽  
Vol 61 ◽  
pp. 127-139 ◽  
Author(s):  
Jure Petkovsek ◽  
Yi Heng ◽  
Matevz Zupancic ◽  
Henrik Gjerkes ◽  
Franc Cimerman ◽  
...  
Keyword(s):  
Heat Flux ◽  
Pool Boiling ◽  
High Heat ◽  
High Heat Flux ◽  
Nucleate Pool Boiling ◽  
Thermographic Investigation

High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups

2000 ◽  
Vol 49-50 ◽  
pp. 371-376 ◽  
Author(s):  
K Tokunaga ◽  
N Yoshida ◽  
Y Kubota ◽  
N Noda ◽  
Y Imamura ◽  
...  
Keyword(s):  
Heat Flux ◽  
High Heat ◽  
High Heat Flux ◽  
Coated Carbon

Erosion and Modifications of Tungsten-Coated Carbon and Copper Under High Heat Flux

2003 ◽  
Vol 5 (4) ◽  
pp. 1887-1894 ◽  
Author(s):  
Liu Xiang ◽  
S Tamura ◽  
K Tokunaga ◽  
N Yoshida ◽  
Zhang Fu ◽  
...  
Keyword(s):  
Heat Flux ◽  
High Heat ◽  
High Heat Flux ◽  
Coated Carbon

Pool boiling with high heat flux enabled by a porous artery structure

2016 ◽  
Vol 108 (23) ◽  
pp. 233901 ◽  
Author(s):  
Lizhan Bai ◽  
Lianpei Zhang ◽  
Guiping Lin ◽  
G. P. Peterson
Keyword(s):  
Heat Flux ◽  
Pool Boiling ◽  
High Heat ◽  
High Heat Flux

Enhanced Pool Boiling Performance on Micro-, Nano-, and Hybrid-Structured Surfaces

2011 ◽  
Author(s):  
Qian Li ◽  
Wei Wang ◽  
Chris Oshman ◽  
Benoit Latour ◽  
Chen Li ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Thermal Management ◽  
Pool Boiling ◽  
High Heat ◽  
High Heat Flux ◽  
Maximum Heat ◽  
Structured Surfaces ◽  
Maximum Heat Transfer ◽  
Functional Components

Thermal management plays an important role in both high power electronics and energy conversion systems. A key issue in thermal management is the dissipation of the high heat flux generated by functional components. In this paper, various microstructures, nanostructures and hybrid micro/nano-structures were successfully fabricated on copper (Cu) surfaces, and the corresponding pool boiling heat transfer performance was systematically studied. It is found that the critical heat flux (CHF) of hybrid structured surfaces is about 15% higher than that of the surfaces with nanowires only and micro-pillars only. More importantly, the superheat at CHF for the hybrid structured surface is much smaller than that of the micro-pillared surface (about 35%), and a maximum heat transfer coefficient (HTC) of about 90,000W/m2K is obtained. Compared with the known best pool boiling performance on biporous media, a much larger HTC and much lower superheat at a heat flux of 250W/cm2 have been obtained on the novel hybrid-structured surfaces.

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