Saint Gobain Isover

Florent Alzetto

Guillaume Pandraud

Johann Meulemans

Benjamin Herout

A method for determining a quantity representative of the thermal resistance of a dividing wall between a first environment and a second environment, including, over at least two successive time periods Dcorresponding to distinct heating powers Pof the first environment, measuring the heat flow rate through the wall qand the temperature in the first environment Tand determining the temperature in the second environment T, at closely spaced time intervals; the quantity representative of the thermal resistance of the wall being determined by bringing into convergence: a thermal model expressing the temporal variation of a temperature in one environment divided off from another environment by a wall, as a function of the heat flow rats: through the wall, the temperature in the other environment, and physical parameters of the wall; and the measured evolution T(t) of the temperature in the first environment over time.

Determination of the thermal resistance of a wall

A method for determining a heat loss coefficient of a premises includes undertaking application of first and second heating powers, respectively, in the premises over two successive time periods, selecting for each of the first and second time periods, a time interval for which the evolution is substantially linear, determining the slope of the tangent to the curve (T(t))over each time interval; and deducing the value of the heat loss coefficient of the premises on the basis of the slopes.

Growing community of inventors

Levallois Perret, France

Florent Alzetto