FIELD: thermal-physical property research.
SUBSTANCE: invention relates to the field of research and analysis of the thermophysical properties of materials and can be used to determine the heat transfer coefficient and the thermal conductivity coefficient of thermal insulation coatings based on hollow microspheres. The proposed method for determining the heat transfer coefficient and the thermal conductivity coefficient of thermal insulation coatings based on hollow microspheres by measuring the actual heat loss in stationary conditions consists in using an installation consisting of a pipeline section with a thermal insulation coating based on hollow microspheres connected to a heating element, measuring the temperature of the coolant at the inlet of the section tin, at the outlet of the section tout, the surface temperature of the pipeline section T, water flow through the tested section Gwt, determination of the actual heat losses Q, the heat transfer coefficient Aht and the thermal conductivity coefficient Ltc according to the calculated formulas.
EFFECT: invention allows determining with a high degree of accuracy the coefficient of heat transfer coefficient and the thermal conductivity coefficient of thermal insulation coatings based on hollow microspheres in stationary conditions when conducting studies of the thermophysical characteristics of materials, excluding the influence of external factors, allowing measurements to be made in a wide range of heating temperatures of the surface of the test sample from +1°C to +200°C, and also makes it possible to determine the actual heat loss on existing main heat lines and pipelines that are thermally insulated with coatings based on hollow microspheres.
1 cl, 2 dwg
