Universal TPC-installation with thermoelectric converters.

Introduction. Universal ТPC-installation on the basis of thermoelectric converters is designed for the study of the effective coefficients of thermal conductivity and thermal resistance of a wide range of samples of solid, granular and viscous materials. It can be implemented in the research and certification laboratories of various gala-sectors of the industry, including food, grain processing, construction, etc. Methods of investigations. The installation is implemented symmetric scheme of the method of determining the coefficient of thermal conductivity of the materials with the use of primary thermoelectric converters of heat flow (thermometers) [1]. The essence of the method-do is to create a stationary heat flow through the flat sample, directed perpendicular to the face (the largest) surfaces. The constructive solution of the installation measuring cell allows simultaneous testing of up to four samples empirical material, which significantly reduces the duration of the research and reduces measurement error. Coefficient of thermal conductivity is determined by the results of measurements of the thickness of the sample, the difference of temperatures of the working surfaces and the surface density of a thermal stream, passing through the sample. Calculation of thermal resistance, RT, K•m/W, and the coefficient of thermoconductivity of the sample λ,), is performed by formulas:  