Results 211 to 220 of about 59,671 (267)

Critical Heat Flux

1975
The critical heat flux is the heat flux at which a transition from nucleate to film boiling occurs. It is of interest to designers because a marked reduction in heat transfer results from the transition, which may be rather sudden and which is accompanied by a substantial rise in surface temperature. Knowledge of the critical heat flux dictates whether
W. Frost, R. Von Reth
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Critical Heat Flux and Dryout

2021
The critical heat flux (CHF) was briefly introduced in Chap. 5, and in the present chapter, the analyses of studies concerning CHF is deepened.
Fabio Toshio Kanizawa, Gherhardt Ribatski   +1 more
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Spreading of critical heat flux region during testing for onset of critical heat flux

Annals of Nuclear Energy, 1989
Abstract Testing to determine the conditions that result in the onset of critical heat flux when the heat flux is not uniform has been enhanced by the implementation of a computerized power control system. Detection of the temperature increase in test rods that results from the onset of critical heat flux permits termination of the test prior to ...
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Critical heat flux thermodynamics

Fusion Engineering and Design, 2002
Convective boiling in subcooled water flowing through a heated channel is essential in many engineering applications where high heat flux need to be accommodated, such as in the divertor plates of fusion reactors. There are many available correlations for predicting heat transfer in the individual regimes of the empirical Nukiyama boiling curve ...
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Consideration of critical heat flux margin prediction by subcooled or low quality critical heat flux correlations

Nuclear Engineering and Design, 1996
The accurate prediction of the critical heat flux (CHF) margin which is a key design parameter in a variety of cooling and heating systems is of high importance. These margins are, for the low quality region, typically expressed in terms of critical heat flux ratios using the direct substitution method.
Pavel Hejzlar, Neil E. Todreas
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Boiling Heat Transfer and Critical Heat Flux

2016
The phase change transition phenomenon from liquid phase to gas phase is called boiling. Boiling heat transfer is a heat transfer that transfers heat from the heat transfer wall surface to the fluid accompanied with vapor bubbles or vapor slugs under the conditions where wall surface temperature and the fluid temperature adjacent to the wall surface ...
Hajime Akimoto, Yoshinari Anoda, Kazuyuki Takase, Hiroyuki Yoshida, Hidesada Tamai   +4 more
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Critical Heat Flux in Subcooled Flow Boiling

Proceeding of International Heat Transfer Conference 11, 1998
This chapter reports a survey of recent experimental work performed to obtain parametric trends of critical heat flux (CHF) in water-subcooled flow boiling, with special concern for high liquid velocity and subcooling, small-diameter channels, and low-intermediate pressure, together with a review of current modeling analysis.
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Critical Heat Flux in Flow Boiling

2021
Critical heat flux (CHF) during pool boiling was discussed in Chapter 3. Similar phenomena also occur during forced convection boiling. A sharp deterioration in heat transfer occurs at some point with increasing heat flux or quality. The heat flux at which the deterioration in heat transfer occurs is known as the CHF and the corresponding quality is ...
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Nano Fluids and Critical Heat Flux

ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B, 2008
In recent years nanofluids have been attracting significant attention in the heat transfer research community. These fluids are obtained by suspending nanoparticles having sizes between 1 and 100 nm in regular fluids. It was found by several researchers that the thermal conductivity of these fluids can be significantly increased when compared to the ...
Mihajlo Golubovic, H. D. Madhawa Hettiarachchi, William M. Worek   +2 more
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Applied Research in Critical Heat Flux

Nuclear Technology, 1992
In this paper critical heat flux (CHF) in boiling water and pressurized water reactors is investigated using a three-pronged approach. First, a physically realistic and mathematically rigorous computational model is developed to describe and simulate the transitions between flow regimes.
Jeffrey T. Dillingham, James H. Stuhmiller   +1 more
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