Abstract
A simulation dynamic model of thermo-hydraulic conditions of heat supply systems (HSS) is presented. The model makes it possible to analyze in time HSS operating conditions with arbitrary configuration and structure, dissimilar loads of heat consumers, taking into account the transport lag of the coolant, cooling along the length of the pipelines, under different weather conditions, disturbances in the system and a given control scenario in the control nodes. To assess the quality, indicators of the degree of heat supply to consumers are proposed. Formulas are given for determining the total, average and average expected deficit (excess) of heat, as well as heat losses in the network, for a calculated period of time under the given control rules. It is proposed to evaluate the efficiency of the operating conditions by the coefficient of efficient use of energy for the billing period. To take into account the real cost of heat, a mathematical model and a method for calculating nodal prices are presented.
Highlights
In developed countries, energy conservation has been given close attention for several decades [1,2,3,4,5,6,7,8,9]
In Russia, this problem became especially acute in the early 1990s, when, in the emerging market economy, the need arose for direct payments for energy resources
The heat supply system (НSS) of the city is a complicated technological and socio-economic complex that ensures the vital activity of a huge number of consumers
Summary
Energy conservation has been given close attention for several decades [1,2,3,4,5,6,7,8,9]. Four factors can serve as a measure for assessing the quality and efficiency of the HSS operating conditions: quality, reliability, cost of heat supply services and ecology. Economic efficiency is achieved due to: reduction of circulation flow of network water; optimization of heat supply schedules from sources; reduction of excess heat losses through insulation; reducing the cost of electricity for pumping the coolant. The ISEM SB RAS has developed a simulation model of dynamic thermohydraulic conditions of НSS, which allows simulating the operating conditions of НSS of arbitrary configuration and structure, with different loads of heat consumers, taking into account the transport delay of the coolant, cooling along the length of pipelines, under various weather conditions and disturbances on sources, pumping stations, heat points, consumers and [11,16,20-26]
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