METHOD AND DEVICE FOR DETERMINATION OF THERMAL PROPERTIES OF SOLID BODIES

摘要

The invention relates to the area of thermophysical studies of media and is intended for the determination of thermal properties of solid media by placing a measuring device on the surface of the medium. A heater, which is made in the form of a flexible membrane capable of taking the shape of the solid body surface under the action of the hold-down pressure and which additionally serves as a temperature sensor, is pressed to the solid body surface by using a hold-down element in such a way as to ensure that the heater shape fits the shape and irregularities of the solid body surface. The heater temperature is registered throughout the heater surface during and after the heating. The thermal conductivity and thermal diffusivity of the solid body are determined by processing the heater temperature measurement data both in the time range from the start of the solid body heating to the start of the thermal convention of the ambient medium and after the termination of the solid body heating process.