Abstract
An experimental study of the influence of thermo-capillary forces and shear stresses with the side of the gas flow to the evaporation flow rate has been made. The experiments were carried out at various thicknesses of the liquid layer and constant gas velocity. The influence of the thickness of the liquid layer on the evaporation flow rate (the intensity of evaporation) has been analyzed. It is shown that the thermocapillary forces have a direct effect on the evaporation flow rate of the liquid layer.
Highlights
One of the main directions of modern technology development is the miniaturization of electronic equipment [1]
Experiments were conducted to study the influence of the liquid layer thickness on the evaporation flow rate at various temperatures of the “liquid-gas” system and at a constant gas flow rate
Infrared study and measurements of the temperature field on the surface of horizontal liquid layer evaporating into gas flow has been performed
Summary
One of the main directions of modern technology development is the miniaturization of electronic equipment [1]. For removing high heat fluxes, promising two-phase cooling system in which a thin layer of liquid moves in a flat mini or micro channel under the action of a gas stream is used. In such systems, the relationship between evaporation and convection in the liquid layer has a direct effect on heat and mass transfer. Intensive evaporation from the free surface of a liquid under the action of a gas flow causes different convection currents in the liquid layer. The shape and structure of these flows are quite complex and can have a significant effect on the intensity of evaporation and, on the efficiency of heat exchangers
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