An experimental study of high heat flux removal by shear-driven liquid films

Intensively evaporating liquid films, moving under the friction of a co-current gas flow in a mini-channel (shear-driven liquid films), are promising for the use in cooling systems of modern semiconductor devices with high local heat release. In this work, the effect of various parameters, such as the liquid and gas flow rates and channel height, on the critical heat flux in the locally heated shear-driven water film has been studied. A record value of the critical heat flux of 1200 W/cm2 has been achieved in experiments. Heat leaks to the substrate and heat losses to the atmosphere in total do not exceed 25% for the heat flux above 400 W/cm2. Comparison of the critical heat fluxes for the shear-driven liquid film and for flow boiling in a minichannel shows that the critical heat flux is an order of magnitude higher for the shear-driven liquid film. This confirms the prospect of using shear-driven liquid films in the modern high-efficient cooling systems

Cooling technique based on evaporation of thin liquid films in microgap channels, ECI

Keynote lecture KN13, publication on CD-ROMinfo:eu-repo/semantics/publishe

Limits of Thin Film Cooling in Microgap Channels

info:eu-repo/semantics/publishe

Vapor Condensation on Curvilinear Disk-Shaped Fin

info:eu-repo/semantics/publishe

Gravitational effects in an evaporative cooling technique with shear-driven liquid films

info:eu-repo/semantics/publishe

Experimental Study of Film Condensation of FC-72 Vapour on Disk-Shaped Fin

The results of activity made in the framework of preparation of the experiment SAFIR (Single fin condensAtion: FIlm local measuRements) of European Space Agency are presented. First prototype of the test cell has been developed and tested. Confocal technique has been adopted for condensate film thickness measurements. Experiments on condensation of the liquid FC-72 have been carried out. Average heat transfer coefficient has been measured in the range of 880-1440 W/m 2 K and compared to the Nusselt theory. © 2011 Springer Science+Business Media B.V.SCOPUS: ar.jinfo:eu-repo/semantics/publishe