The features of thermodynamic calculations for achieving the technologically necessary temperature of bitumen in the process of its heating with the help of a coil heater are considered. Based on the results of experimental studies, refined mathematical models were developed for calculating the main thermophysical properties (density, kinematic viscosity, isobaric heat capacity, coefficient of thermal conductivity and volume expansion) of bitumen grade BND 60/90 and hot coolant of thermal oil AMT-300, which used for heating bitumen. Analytical dependences are proposed, which make it possible to adequately estimate the value of heat transfer coefficients for various types of heat exchange, depending on the type of container where bitumen is stored. A detailed algorithm for calculating the necessary bitumen heating time is presented, taking into account the criteria of similarity of speed and thermal fields, physical properties of the coolant and bitumen, storage temperature and ambient air. Approbation of the proposed methodology was carried out on the example of the calculation of BND 60/90 bitumen stored in a horizontal tank with thermal insulation. Graphical dependences have been obtained, which make it possible to estimate the technologically necessary time to heat up BND 60/90 bitumen to a given temperature, depending on the ambient temperature, volumetric flow rate, and the temperature of the hot coolant at the entrance to the heat exchanger