METHOD FOR DETERMINING THE INTEGRAL HEMISPHERICAL DEGREE OF EMISSIVITY OF SURFACES OF SOLID BODIES AND COATINGS Russian patent published in 2023 - IPC G01J5/12 G01N21/72 

FIELD: thermal physics.

SUBSTANCE: invention relates to the field of thermal physics and relates to a method for determining the integral hemispherical emissivity of surfaces of solids and coatings. The method consists in heating a sample consisting of one plate with the surface under study from the side opposite to the surface under study to a predetermined temperature and holding until a steady state is established. The free thermocouple is placed horizontally and parallel to the investigated surface of the plate at a distance of 2-3 mm from the investigated surface. The temperature of the investigated surface T_n is determined, the reading of the free thermocouple T_m and the ambient temperature T_c are recorded. According to the data obtained, the integral hemispherical emissivity is calculated.

EFFECT: reducing the number of measurements, simplifying the processing of experimental data, increasing the accuracy and reliability of the results obtained and providing the possibility of carrying out measurements in a vacuum and a gaseous medium.

1 cl, 3 dwg