Statement of the problem. When carrying out design calculations of heating networks, in particular, calculating the thickness of thermal insulation structures, thermal elongations during thermal expansion, standard losses during the transportation of thermal energy to the consumer, it is often necessary to use the design values of the average annual temperatures of the coolant indicated depending on the design temperature schedule in modern standards [18, 24]. According to a number of researchers, the recommended values of average annual coolant temperatures do not take into account climatological characteristics and their use can lead to significant errors [1--3]. In addition, recommended temperatures have changed over the past few years and there has been a contradiction in regulations. Currently, there are no substantiated values of the design average annual temperatures of the heat carrier in the heating network, taking into account climatological data. Results. For the design temperatures of the temperature graphs of the central quality regulation95 / 70--150 / 70 for the settlements of the territory of the central federal district, presented in the latest edition of building climatology, the values of the average annual water temperatures in the supply line of the heating network have been determined. The averaged values of temperatures for the considered temperature graphs are obtained.Conclusions. For most of the temperature graphs, significant discrepancies have been established between the calculated values of the average annual water temperatures in the heating network and those recommended by the JV “Heating Networks” of the latest edition. The maximum difference is observed for the 150/70 graph and is 12 ° C.
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