FIELD: construction materials.
SUBSTANCE: invention relates to the determination of the thermophysical characteristics of solid construction materials and can be widely used in various fields of technology, for example in thermal power engineering, construction, etc. A method for determining the complex of thermophysical characteristics of solid construction materials includes a test sample, on the middle of the surface of which temperature sensors are installed on the side of the refrigerator and heater. The sample is placed in a device for implementing the method between the heater and the refrigerator, the ends are closed with sealed lids to stabilize the temperature and heat flow passing through the sample under study. The temperature of the heater, the temperature of the refrigerator, the thickness of the sample are set in the electronic control unit and the device is switched on. The thermocouples of the heater and refrigerator are connected to the electronic control unit, as well as a heat flux sensor mounted on the refrigerator to measure the stationary heat flux density, which is recorded in the memory unit of the electronic control unit. The surface temperature of the test sample measured using an additional thermocouple from the refrigerator side, as well as the measured surface temperature of the test sample from the heater side, are entered into the computer device and the control unit, with the necessary data to determine the thermal resistance coefficient in the control unit’s computing device. The computer device, using the experimental data obtained, calculates the desired thermophysical characteristics of the sample under study, and, in addition, additionally calculates thermal conductivity and thermal insulation.
EFFECT: increase in the accuracy of determining the thermophysical characteristics of construction materials while simultaneously expanding the functionality.
1 cl, 2 dwg
