Background. The efficiency of district heating depends on technological losses, such as overheating losses. Such losses are caused by the need to maintain a network water temperature sufficient to heat the water for hot water supply to the standard values, but not higher than the heat medium temperature for heating. In closed heat supply systems, without automatic regulators in heating systems, the uneven consumption of hot water leads to a decrease in the supply of network water for heating, and, consequently, to a decrease in the temperature of the air inside the premises. The drawback of existing solutions is the difficulty of maintaining hydraulic regimes in the heat network. Increasing energy efficiency and rational use of energy resources is an urgent task, therefore. The efficiency of the district heating system is affected by the operating mode of heating systems and heat-using equipment, so it is now also important to optimize the thermal-hydraulic regimes.
Materials and methods. To build the mathematical model, we applied methods of mathematical modeling of nonlinear physical processes. However, we did not take into account hydraulic resistance in the lateral branches of the tees in the thermohydraulic distributor.
Results. A new scheme for connection of consumer units in an individual heat point is proposed. The scheme makes it possible to exclude the influence of sharply variable load in the hot water supply system during the day on the temperature regime of consumer premises without automatic regulators in the heating system, and to eliminate the overheating of consumers.
Conclusions. The obtained results can be used in individual and central heat points of a district heating system with the constant hydraulic resistance of the consumer units making it possible to connect the hot water heater in parallel with any ratio of maximum heat flows for hot water and heating supply and to eliminate overheating.