Heating management for buildings with low-temperature modes of heat supply

The problem of temperature control of a building is considered due to a change in the coolant flow rate to its heating system with a significant decrease in the temperature of the water in the supply heat pipe. Several variants of the solution of this problem have been proposed, including under the condition that the consumer, using the available equipment, removes the amount of heat required by the weather. Some extreme cases of heat supply are analyzed. It is shown that the results obtained are qualitatively consistent with simple physical considerations. At the same time, as it is generally accepted, the heat supply object is represented by an equivalent heating device. The permissible range of temperature drop in the supplying heat pipe is determined, at which the task of 100% heat supply can still be solved by increasing the coolant flow rate. It is indicated that this range is rather limited and depends on the outside air temperature due to the dependence on this value of the coolant temperature in the basic mode (the so-called qualitative method for regulating the heat supply process is used). It is shown that the range of the coolant temperature decrease in the supplying heat pipe can be significantly increased if a certain deterioration in the quality of heat supply is possible - the amount of heat delivered. The results of the work can be used both in the development of low-temperature heat supply regimes - schedules for the quantitative regulation of heat release (heat load), as well as in the algorithmic support of automated control systems for heat supply and heating of buildings.