The zonal model of calculation of heating of bars supposes the division of working space of nagrevatel'nogo well on by volumes calculation areas which are parted between itself by fictitious surfaces. The account of unevenness of heating of bars is carried out by determination of temperatures of gas from the calculation of thermal balance in every area.
Development of mathematical model for determination of temperature of the bars located in different areas of chamber is the purpose of this work, and finding out of possibility of the standard heating of bars.