METHOD OF DETERMINING THERMAL CONDUCTIVITY COEFFICIENT OF LIQUID HEAT INSULATION AT NON-STATIONARY THERMAL MODE

摘要

FIELD: measuring equipment.;SUBSTANCE: invention relates to nonstationary methods for determining thermal conductivity coefficient of liquid heat-insulating materials. Developed method may be used in construction and heat power engineering for analysis of heat conducting properties of super-thin liquid heat-insulating coatings. Essence of the method lies in the local application of a layer of liquid thermal insulation of a known thickness to the surface of a flat heat source. In the cooling mode of the surface of a flat heat source at an arbitrary time according to the known values of the temperature of the surface of a flat heat source, the surface temperature of a thermally insulated section and the ambient temperature, and also the known thermal layer thickness of a thermal insulation layer is calculated by the special design formula for the thermal conductivity of liquid thermal insulation.;EFFECT: technical result consists in increased accuracy of determining thermal conductivity coefficient of liquid heat insulation.;1 cl, 5 dwg