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High heat flux loop heat pipes
Space technology and applications international forum (STAIF - 97), 1997Loop heat pipes (LHPs) can transport very large thermal power loads over long distances, through flexible, small diameter tubes against gravitational heads. In order to overcome the evaporator limit of LHPs, which is of about 0.07 MW/sq m, work was carried out to improve the efficiency by threefold to tenfold.
Mark T. North +4 more
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International Journal of Heat and Mass Transfer, 2019
Abstract In order to investigate the heat transfer characteristics of hypervatron in the divertor dome of the International Thermonuclear Experimental Reactor (ITER), the off-center electrically heating method was used simulate the one-side heating condition in the engineering application. The heat transfer experiments of subcooled water were carried
Ge Zhu +4 more
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Abstract In order to investigate the heat transfer characteristics of hypervatron in the divertor dome of the International Thermonuclear Experimental Reactor (ITER), the off-center electrically heating method was used simulate the one-side heating condition in the engineering application. The heat transfer experiments of subcooled water were carried
Ge Zhu +4 more
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Burnout at very high heat fluxes
Wärme- und Stoffübertragung, 1992The paper provides a brief overview of the present state-of-the-art in the field of the critical heat flux (CHF) in subcooled flow conditions, with particular regard to high liquid velocity and highly subcooled conditions. These thermofluid-dynamic conditions to reach very high values of the CHF (up to 80 MW/m2) as requested by fusion technology ...
G. P. Celata, M. Cumo
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High temperature heat flux measurements
29th Aerospace Sciences Meeting, 1991The Heat Flux Microsensor is a new heat flux gage system that is made using microfabrication techniques. The gages are small, have high frequency response, can measure very high heat flux, and output a voltage directly proportional to the heat flux. Because the gage is made directly on the measurement surface and the total thickness is less than 2 pm ...
J. HAGER +3 more
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International Communications in Heat and Mass Transfer, 1995
Transient conduction and nongray radiation in an absorbing, emitting and isotropically scattering glass slab with reflective boundaries is solved by the application of an implicit finite difference/discrete ordinates method. Solutions are presented for predicting temperatures and heat fluxes in a one dimensional slab geometry being externally heated by
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Transient conduction and nongray radiation in an absorbing, emitting and isotropically scattering glass slab with reflective boundaries is solved by the application of an implicit finite difference/discrete ordinates method. Solutions are presented for predicting temperatures and heat fluxes in a one dimensional slab geometry being externally heated by
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Journal of Thermal Science, 2021
The subcooled water flow boiling is beneficial for removing the high heat flux from the divertor in the fusion reactor, for which an accurate critical heat flux (CHF) correlation is necessary. Up to now, there are many CHF correlations mentioned for subcooled water flow boiling in the open literatures.
Ping Liu +8 more
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The subcooled water flow boiling is beneficial for removing the high heat flux from the divertor in the fusion reactor, for which an accurate critical heat flux (CHF) correlation is necessary. Up to now, there are many CHF correlations mentioned for subcooled water flow boiling in the open literatures.
Ping Liu +8 more
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DESIGN CONSIDERATIONS OF HIGH HEAT FLUX HEAT PIPE EVAPORATORS
Journal of Electronics Manufacturing, 2000A numerical model was developed to describe the liquid and vapor flows inside porous wicks in heat pipe evaporators. The evaporator design parameters, including pore radii distribution, wick permeability and thickness, were calculated for various heat flux conditions.
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High Heat Flux Removal Using a Hypervapotron–I: High Heat Flux–Side Controlling Parameters
Fusion Science and Technology, 2015A hypervapotron is an excellent candidate for single-side high heat flux removal (HHFR). Hypervapotron HHFR is accomplished by subcooled two-phase flow boiling and conjugate heat transfer involving...
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An observation of a high heat flux in a laser-heated plasma
Journal of Physics D: Applied Physics, 1982A small volume of an initially uniform plasma is heated with a CO2 laser focused to an intensity of 1.3*1011 W cm-2. The evolving thermal and rarefaction wave is measured by Thomson scattering. Comparison of these measurements with a one-dimensional simulation shows that the heat flux reaches 15% of the free-streaming limit.
E S Wyndham +3 more
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High Temperature Heat Flux Calibration
Heat Transfer: Volume 3, 1997Abstract Today heat flux sensors are available with temperature ratings up to 800°C. In many situations these sensors do not have to be cooled at all, and therefore do not produce aerodynamic or thermal disturbances. However, the variation of their sensitivity with temperature can be an important source of error.
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