METHOD OF EXPERIMENTAL DETERMINATION OF SURFACE HEAT-TRANSFER COEFFICIENT AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC G01N25/18 G01N27/18 

FIELD: physics.

SUBSTANCE: at the boundary of the fluid-solid surface, preheating of the heat exchange surface (1), made of a non-conductive material, is carried out by passing a current of high magnitude through the conductive layer (2) - a thin metal foil with a high temperature coefficient of resistance glued onto this surface. In the flow of the cooling medium, the cooling rate of the heat-exchange surface (1) is measured, for which a minimum current is passed through the foil (2). The current is sufficient to measure its electrical resistance, the value of which determines the temperature of the foil by the resistance thermometer. The heat-transfer coefficient is determined by the cooling rate of the heat-exchange surface (1) under steady-state conditions.

EFFECT: reduction of the error in determining the heat-transfer coefficient due to the use of the same elements for heating the heat-exchange surface and measuring its temperature, as well as the labour intensity of the experiments.

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