The paper considers the problem of reducing heat losses in the heat supply systems of the FEC facilities (fuel and energy complex) due to the the use of heat insulation of the pipelines. A comparative analysis of heat insulation of the heat lines: PUF (polyurethane foam), mineral wool, foam rubber, ultrathin heat insulation of the mark “Corund”. The graphical dependences of heat losses and the efficiency factor of heat insulation on a diameter the pipelines are obtained.

The thermal method of increasing the efficiency of high-viscosity fluid transportation is considered, using the example of M100 fuel oil. The graphical dependences of the dynamic fluid viscosity on the temperature, the kinematic viscosity on the consumption of a heating steam and on the power of heating pads provided that high-viscosity fluid is heated, as well as the Prandtl number on the heat output of a heater, are obtained.