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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 99 for “"Critical Heat Flux"”.
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Post critical heat flux heat transfer.
Thesis. 1976. Sc.D.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Critical heat flux in countercurrent flow.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1974. M.S.
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Subcooled critical heat flux for water in round tubes,
Massachusetts Institute of Technology. Dept. of Naval Architecture and Marine Engineering. Thesis. 1965. Nav.E. (Also M.S. in Mechanical Engineering).
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Nanofluids and critical heat flux, an experimental and analytical study.
Nanofluids and critical heat flux, an experimental and analytical study.
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Determination of pool boiling Critical Heat Flux enhancement in nanofluids
… Using an electrically controlled wire heater, pool boiling Critical Heat Flux (CHF) of Alumina and Silica water-based nanofluids of concentration less than or equal to 0.1 percent by volume were measured. Silica nanofluids showed CHF enhancement up to 68% and there seems to be a …
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Effect of additives on the critical heat flux in nucleate boiling
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1964.
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Combined Modeling and Experimental Validation of Boiling Curve and Critical Heat Flux
… for the boiling curve prediction, while for the critical heat flux the prediction error is limited within +/-20%, which equals or supersedes most available semi-empirical models or correlations. This model captures and correctly describes the stochastic nature of the flow and thermal variations, …
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Post critical heat flux heat transfer to water in a vertical tube.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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An Experimental Investigation of Critical Heat Flux Performance of Hypervapotron in Subcooled Boiling
… model was developed to give predictions of critical heat flux on both plain and hypervapotron surfaces. It was developed on observations of bubble formation, departure and coalescence, and on the confirmation of nucleation structure on the heating surface. Finally, a numerical code was …
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Multiphase CFD benchmark of experimental critical heat flux data at PWR operating conditions
Critical Heat Flux (CHF) in flow boiling represents the fundamental upper limit for thermal hydraulic performance of PWR fuel. Currently, the nuclear industry relies on expensive, prototypical experiments using electrically heated, full-height rod assemblies to determine the limit of the boiling …
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Experimental Investigation of Critical Heat Flux Enhancement on Engineered Surfaces with Infrared Thermometry
… The prediction and enhancement of the heat flux at which this boiling crisis occurs (also known as critical heat flux, or CHF) has been the focus of boiling heat transfer research for over a century, as CHF sets an upper limit to the operating heat flux for applications cooled by …
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The effect of nonuniform axial heat flux distribution on the critical heat flux.
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1966. Sc.D.
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Critical heat flux enhancement via surface modification using colloidal dispersions of nanoparticles (Nanofluids)
… nanofluids include higher thermal conductivity, heat transfer coefficients (HTC) and boiling critical heat flux (CHF) than that of the respective base fluid. Nanofluids have been found to exhibit a very significant enhancement up to 200% of the boiling CHF at low nanoparticle concentrations. In …
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Post critical heat flux heat transfer in a vertical tube including spacer grid effects
Thesis. 1978. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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Nano-engineering the boiling surface for optimal heat transfer rate and critical heat flux
… effects on pool boiling characteristics such as critical heat flux and the heat transfer coefficient of different surface characteristics such as surface wettability, roughness, morphology, and porosity are not well understood. Layer-by-layer nanoparticle coatings were used to modify the surface …
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Influence of wettability on boiling heat transfer and critical heat flux in vertical flow boiling
The critical heat flux (CHF) marks the upper limit of safe operation of heat transfer systems that utilize two-phase boiling heat transfer. In a heat-flux-controlled system, exceeding the CHF results in rapid temperature excursions which can be catastrophic for system components. In nuclear power …
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Direct Measurement of Boiling Water Heat Flux for Predicting and Controlling Near Critical Heat Flux
A novel method for measuring heat flux of boiling water is designed and built to study critical heat flux (CHF) and observe the response of a heat flux sensor when CHF occurs. A high temperature heat flux sensor is embedded in the wall of a pipe to get a direct measurement of the surface heat flux …
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An experimental study of critical heat flux with surface modification and its analytic prediction model development
The critical heat flux (CHF) condition causes a drastic reduction of heat transfer coefficient and sometimes involves physical failure of the heating surface in heat flux-controlled systems. Understanding of CHF phenomena and reliable CHF prediction model development are necessary to design various …
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Subcooled flow boiling heat transfer and critical heat flux in water-based nanofluids at low pressure
… have shown that nanofluids can improve the critical heat flux (CHF) by as much as 200%. In this study, subcooled flow boiling heat transfer and CHF experiments were performed with low concentrations of alumina, zinc oxide, and diamond nanoparticles in water (< 0.1 % by volume) at atmospheric …
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