METHOD FOR DETERMINING HEAT CONDUCTIVITY Russian patent published in 2015 - IPC G01N25/18 

FIELD: heating.

SUBSTANCE: method is implemented by heat action on a specimen with further cooldown, measurement of temperature difference at boundaries of the test section of the specimen and amount of heat supplied to it during a difference integration period. In addition, the second heat action is performed; temperature drops are measured at these boundaries relative to environmental temperature; time of the beginning of integration is set at the stage of the first cooldown, and its end is determined at the second cooldown, at the moment of equality of weighted sums of temperature drops at the specified points of time: Δt(0, τ₂)+pΔt(L, τ₂)=Δt(0, τ₁)+pΔt(L, τ₁), where τ₁, τ₂ - time of the beginning and end of integration, p - weight coefficient. Heat conductivity is determined by the formula.

EFFECT: increasing accuracy of determination of heat conductivity.

2 dwg