FIELD: measurement technology; building.
SUBSTANCE: invention relates to the field of determining the thermophysical characteristics of enclosing structures and can be used in construction to evaluate heat-shielding properties based on test results in full-scale conditions. Method of determining the changes in the thermal resistance and the thermal conductivity coefficient over the thickness of the outer wall fence according to the results of thermophysical tests in full-scale conditions is notified, including measurement of temperatures on the inner and outer surfaces, as well as throughout the thickness of the structure by placing sensors in the thickness of the fence, the incoming information from which is sent to the computer's data bank, where it is processed and systematized in the form of graphs, with the use of which, on the cross-section of the external fence being studied, constructed on a selected scale and pre-divided into layers at the locations of the sensors, graph of the distribution of temperatures over the layers is constructed. To plot the distribution of temperatures over layers, an arbitrary scale is used to show the thickness of the wall of the sample to be analyzed, broken down into layers at the points where thermocouples are established. In parallel to the wall surface, a vertical temperature scale is drawn from which points of the corresponding temperatures taken from the graph obtained from the computer data bank are transferred to the selected layers. In parallel with the first incision, a second cut is constructed, where the same wall of the test sample is constructed on the scale of thermal resistance. Then we transfer the points of the temperature profile to the outer and inner surfaces from the first cut to the second cut and connect them by a straight line. We transfer the remaining points of the first cut to the oblique graph in the form of a straight line on the second cut and project the points downwards onto the horizontal line. Obtained segments on the horizontal line numerically express the thermal resistances of the fence layers. Knowing the thickness of the layer and the resulting values of thermal resistances, the value of the coefficient of thermal conductivity of each layer is determined by the formula 
, where λ – coefficient of thermal conductivity, W/m K; δ – thickness of the wall layer, m; R – thermal resistance of the wall, m2 K/W; value of the coefficient of thermal conductivity of each layer is determined.
EFFECT: increase the information content of the data.
1 cl, 2 dwg
