On the issue of determining heat losses through thermal insulation structures of pipelines of heat supply systems at the pre-design stage

In the work of obtained the dependences of specific heat transfer coefficients for different conditions of laying a thermal network and different soils from the flow rate of the coolant. Deviations of the specific heat transfer coefficient for different types of thermal insulation of pipelines do not exceed 1,9 %, which makes it possible to ignore this condition. A method for determining heat losses based on the distributed load of the coolant is proposed. For the model of the thermal network, a comparison of the total losses of thermal energy is made: normative; real, obtained on the because of thermal engineering calculation, losses obtained by the distributed load method. The discrepancy between the methods of finding thermal energy losses in relation to distributed losses was less than 8 %.