SELECTING THE SCHEME OF TECHNOLOGICAL CONNECTION OF SUBSCRIBERS TO THE HEAT NETWORK UNDER CONDITIONS OF TRANSITION TO PULSE CIRCULATION OF THE HEATER IN THE EQUIPMENT OF HEAT SUPPLY UNITS

Abstract

Objectives. The aim is to justify the expediency of a transition en masse to independent connection of heat consumption systems under the conditions of pulse circulation of the coolant through the equipment of a heat supply unit in order to increase the overall energy efficiency of district heat supply systems.Methods. The research is based on methodologies for the effective use of technologies providing a means of effecting a pulsed motion of the coolant in the heat supply system. The advantages and disadvantages of known technical solutions are identified and summarised. Hydraulic accumulators or any other devices for damping a hydraulic shock can be used as devices for preventing the propagation of a wave of hydraulic shock into the transport mainline.Results. An analysis of approaches to heat consumption system connection is carried out in order to assess power efficiency; the most effective ways for improving the efficiency of heat and power devices are identified; a synthesis of the technical solution for the implementation of a technological connection of heat consumption systems is performed. The expediency of transition to independent connection of heat consumption systems under the conditions of pulse circulation of coolant in heat supply units is demonstrated. The independent scheme of connection of subscribers to the heat network is indicated as the most appropriate. The factors constraining the en masse transition to independent connection of the heat load are determined. Based on the analysis and scientific research in the field of increasing the energy efficiency of heat and power systems, the transition to pulse circulation of the coolant in the heat supply unit of the independent heat consumption system is selected. The presented technical solutions are confirmed by Russian Federation patents of inventions and utility models.Conclusion. It is shown that the use of pulse coolant circulation in the equipment of heat supply units for independent connection of heat consumption systems will increase the reliability and long-term operation of the recuperative heat exchanger, as well as increase the overall energy efficiency of the heat supply system.

Keywords

• heat supply system
• heat network
• heat consumption system
• heat supply unit
• dependent and independent scheme of heat load connection