Heat Exchange Simulation Of The Method And Portable Device For Measuring The Emissivity

A new method of measuring the emissivity is proposed, which is a combination of the relative radiation and calorimetric methods and allows to compensate for the influence of the convective component of heat exchange in the measuring cell. Conducted here is the computer simulation of complex radiation and convective-conduction heat exchange processes in cylindrical working cells of a portable device for measuring the emissivity. It has been established that the convective heat exchange in the cell is commensurate with the radiation heat exchange and leads to an uneven distribution of heat flow on the surface of the sensor.