METHOD FOR DETERMINING REDUCED THERMAL RESISTANCE OF NON-UNIFORM ENCLOSING STRUCTURE IN CLIMATIC CHAMBER Russian patent published in 2018 - IPC G01N25/18 

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular, to a method for determining the reduced thermal resistance of non-uniform enclosing structures or their fragments in a climatic chamber. Method for determining the reduced thermal resistance of an non-uniform enclosing structure in a climatic chamber includes installation of the studied structural fragment in the chamber opening, creation of the conditions of stationary heat exchange for the structure and measurement of the temperatures of the internal and external air, the temperatures of the surfaces of the enclosing structure, as well as the density of the heat flux passing through it, based on which the values of the corresponding unknown quantities are calculated by the formulas. To fragment 5 of the non-uniform enclosing structure over the entire area of the inner surface, aluminum sheet 7 is attached, the thickness of sheet 7 being determined by calculation from the conditions providing a one-dimensional temperature field to which heaters 8 and temperature sensors 9 are placed. In this case, sheet 7 can be formed of several sheets of smaller thickness connected by a detachable fixture. In addition, aluminum sheet is attached over the entire surface area of the non-uniform enclosure structure, while thickness of the sheet is determined by calculation from the conditions providing a one-dimensional temperature field to which heaters temperature sensors 10 are attached.

EFFECT: increase in the accuracy of determining the reduced thermal resistance of the fragment of the external non-uniform enclosing structure in the climatic chamber.

1 cl, 1 dwg