PROBLEM SOLUTION FOR CONSTRUCTION OF THERMAL CONDUCTIVITY METER FOR THERMAL INSULATION MATERIALS

Abstract

The problems of constructing thermal conductivity meter for thermal insulating materials are
considered in the article. Different versions of the constituent elements of the device are given.
Three ways to assemble thermal conductivity meter (three structural model of a framework) are
worked out and produced. Selected balanced circuit of the meter eliminates the need for heat meter
in the instrument, which is quite problematic measurement means. The tests show satisfactory reliability
and acceptable accuracy of thermal conductivity meter. Positive experience of the use of the
meter in the laboratory and a number of scientific and research work is indicated. The meter is also
suitable for measuring thermal resistance of the thermal conductivity of the sample, including a multilayer
one.
Keywords: thermal conductivity coefficient, heat-measuring cell, heat flow density, heater,
cooling radiator, heat meter, thermal insulation materials.