MODE OF DEFINITION OF THE COEFFICIENT OF HEAT TRANSFER OF THE BODY OF TRANSPORT ISOTHERMAL VEHICLES Russian patent published in 2008 - IPC G01N25/18 

FIELD: invention refers to definition of the coefficient of heat transfer of the body of transport isothermal vehicles.

SUBSTANCE: essence is in that successive heating of air is executed inside the transport vehicle with the aid of the source of heat, cooling during 10-12 hours with by the hour measuring of the inner and the exterior temperature, metering of the power of the source of heat in the process of heating and cooling, definition of the difference of temperatures with following calculation of the sought characteristic, after that they execute investigation of the four-hour intervals of the processes of heating and cooling on deviation of regular curves of exponent function 1nθ-f(τ) in half-graphic coordinates from direct 1nθ-τ in the same coordinates, where θ=t_ins-t_out - difference of temperatures inside (t_ins)and outside (t_out) of the transport vehicle; τ-counting out of time in an hour, then they choose two sectors on the line of heating and cooling, maximally closed to direct line of the regular process, differential equations of thermal balance on these sections are liniarized and in integral form used for definition of sought coefficient of thermal transfer according to the definite mathematical formula.

EFFECT: increases accuracy of definition of the coefficient of thermal transfer of the body of transport isothermal vehicles and also for reducing labor-intensity of the approximation of experimental curves.

1 dwg