DEVICE FOR MEASURING THERMAL CONDUCTIVITY Russian patent published in 2017 - IPC G01N25/18 

FIELD: measuring equipment.

SUBSTANCE: device for measuring thermal conductivity refers to devices for measuring high values of thermal conductivity by a stationary method that involves the use of a longitudinal heat flow in a sample of the test material. The device is proposed for measuring high values of thermal conductivity by the method of stationary heat flow in a sample containing a thermostat that cools one end of the test sample and ensures the constancy of the set value of its temperature; a heater located at the other end of the sample; sensors that measure the temperature difference on the sample and are connected to the meter of their signals. The device also includes the first Peltier battery connected to the power source and acting as a thermostat, on the surface of which the heat flow sensor is sequentially arranged and pressed tightly together, the heat flow concentrator plate with the first temperature sensor, the sample with the surrounding heat insulation, the contact plate with the second temperature sensor, the second Peltier battery, also connected to the power source and acting as a heater.

EFFECT: increasing the accuracy of measuring high values of thermal conductivity of solids with guaranteed reliability of the results obtained without involving samples with the known values of thermal conductivity.

1 dwg