Optimization of the Effective Heat Supply Radius for the District Heating Systems

Abstract

The problem of determining the effective (optimal) heat supply radius is considered. Heat supply radius is transportation distance of heat energy in the district heating systems (DHS), under which the highest indices of economic efficiency of district heating to consumers are respected. To solve this difficult and multifactorial problem, a bi-level approach has been proposed. This approach allows finding the optimal frameworks of territorial areas of district heating while fulfilling the necessary requirements for thermal-hydraulic modes in heat networks and for reliability of heating to consumers. Methodology for solving the formulated problem is based on bi-level programming methods, models of Theory of hydraulic circuits, nonlinear optimization methods, nodal reliability indices (availability factor, failure-free operation probability), Markov random processes models and other methods and models. A case study has been conducted using the developed methodological apparatus for the actual DHS scheme of the Irkutsk city (Russia, Siberia).

Determination of an Effective Heating Radius in District Heating Systems in terms of Reliability

“…Normally, the connection of new consumers in the case of available heat source capacity and the throughput of pipelines leads to an increase in operating costs, which must be compensated for by the consumer that has an individual heat tariff set. The effectiveness of connecting a new consumer to the existing heat network within the EHR is assessed based on an additional criterion, the so-called local EHR, which allows estimating the economically feasible distance between the consumer and the point of connection to the system [26,27].…”

“…Figure 3 indicates the specific costs of heat supply for the most extended transmission pipeline of heat network in comparison with their system-average level. The relationship between the heat load and the material characteristic of the heat network has the main effect on the specific heat supply costs [26,27]. The higher the specific material characteristic, the higher the specific costs, and vice versa.…”

Condition and trends of energy construction in the Russian Federation for 2023 based on the results of the implementation of energy supply contract programmes

“…Based on all of the above, it can be stated that the energy sector of our country today is in strong need for additional investment in the industry and the introduction of advanced domestic technologies, which is a priority problem today for the industry and the entire state as a whole. [2,12]…”

Optimization of the Geometric Parameters of the Thermal Insulation of the Heating System by Using Multi-Pipe Circular Thermal Insulation

“…Vigants et al [2] studied energy usage in DHS in dependence on flow and temperature conditions in networks. Stennikov at al [3] showed results of optimization of heat supply radius for DHS in a town in Russia. Ruseljuk et al [4] studied legal, climate and economic factors to highlight weak points in DHS in Estonia and Serbia networks.…”