scholarly journals Management of modernization of heat supply system of the region in the context of its sustainable development

2020 ◽  
pp. 20-36
Author(s):  
Tetiana Zheliuk
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Heat Supply ◽  
District Heating ◽  
Heat Supply System ◽  
Heating System ◽  
Energy Sector ◽  
Supply System ◽  
District Heating System ◽  
The Sustainable Development

Introduction. One of the main directions of ensuring the sustainable development of the national economy and its regions is the reform of the energy sector, which can take place through the modernization or innovation of its components. An important component of these reforms is to provide the population with the environmentally friendly and socially safe thermal energy. At the present stage of management, the heat supply is the most costly branch of public utilities, which is supplemented by the problems of the inefficient fuel balance structure; worn-out infrastructure and low energy efficiency. This highlights the need to study the management of modernization of the heat supply system in the region in view of the declared vectors of the long-term development. Object of research is the process of managing the modernization of the heat supply system in the region. Subject of the research is a set of scientific approaches and practical mechanisms of modernization of the heat supply system of the region in the context of ensuring its sustainable development. Objective. The conceptual foundations of modernization of the heat supply system of the region in the context of its sustainable development through the introduction of the innovative technologies both in the management process and in the energy sector itself is substantiated in the paper. Methods. The following general scientific methods were used during the research process: system, structural analysis, grouping, when studying the structural elements and isolation of problems of development of the heat supply system of the region; historical analysis, when considering the scientific principles and institutional mechanism of modernization of the region’s heat supply system; comparative analysis in assessing the possibilities of the green transition of the heat supply system of the region and also when considering the features of the use of grant resources in the modernization of the heat supply system of the region; economic analysis in assessing the current state of the district heating system, etc. results. The essential determinants of the heat supply system of the region are analyzed, the objective need, organizational and economic mechanisms for managing the modernization of the heat supply, taking into account the need for the balanced development of the energy sector of the region are verified. The scientific novelty of the obtained results lies in the substantiation of the conceptual approaches to the management of modernization of the heat supply system of the region by innovating the forms and methods of managerial influence on the heat supply system of the region. The conclusion is made about the following effective approaches in managing the modernization of the district heating system: planning of the sustainable development of the energy sector, development of programs for modernization of the district heating, implementation of the infrastructure and soft projects, implementation of the international projects, motivation of households and entrepreneurship in the heat sector, participation in the grant requests, in state crediting programs, realization of the business projects in the field of production of environmentally friendly fuel; conducting an information campaign among the population and other key market players to raise the awareness of the energy efficiency financing mechanisms. The practical significance of the obtained results is that the developed recommendations will be used to improve the organizational and economic mechanism of management of the district heating system modernization and ensure its sustainable development.

scholarly journals The development of the district heat supply system of the city of Karaganda

2019 ◽  
Vol 135 ◽  
pp. 01031
Author(s):  
Mereke Agilbayeva ◽  
Alexey Kalinin
Keyword(s):  
Heat Supply ◽  
District Heating ◽  
Heat Supply System ◽  
Heating System ◽  
Supply System ◽  
The State ◽  
District Heating System ◽  
Pipeline Networks ◽  
The City ◽  
Heat Loads

The district heating system of Karaganda (Kazakhstan) is considered in the article. The characteristics of the existing cogenerators and the state of the pipeline networks are given. Given the analysis of the existing state of the entire district heating of Karaganda. Proposed the program for the integrated development of the heat supply system bringing world experience in implementing the main development and modernization of heating networks. Shown the experience of reconstruction of heat supply facilities in the city of Karaganda within the framework of the state loan program “Nurly Zhol”. Based on the statistical data on the development of the city of Karaganda and its heat supply system the predicted heat loads are given until 2030. Due to the shortage of available heat capacity, options for the development of a centralized heat supply system in Karaganda are given and analyzed.

scholarly journals Mobile Thermal Energy Storage

2021 ◽  
pp. 44-50
Author(s):  
Vladimir Demchenko ◽  
Alina Konyk ◽  
Vladimir Falko
Keyword(s):  
Heat Supply ◽  
Heat Storage ◽  
Peak Load ◽  
District Heating ◽  
Heat Supply System ◽  
Supply System ◽  
Heat Losses ◽  
Working Fluid ◽  
Heat Accumulator ◽  
District Heating System

The article is devoted to topical issues related to the storage, accumulation and transportation of heat by stationary and mobile heat storage. Analysis of the current state of the district heating system indicates significant heat losses at all stages of providing the consumer with heat. The use of heat storage in heat supply systems leads to balancing the heat supply system, namely, the peak load is reduced; heat production schedules are optimized by accumulating excess energy and using it during emergency outages; heat losses caused by uneven operation of thermal equipment during heat generation are reduced; the need for primary energy and fuel consumption is reduced, as well as the amount of harmful emissions into the environment. The main focus is on mobile thermal batteries (M-TES). The use of M-TES makes it possible to build a completely new discrete heat supply system without the traditional pipeline transport of the heat carrier. The defining parameters affecting the efficiency of the M-TES are the reliability and convenience of the design, the efficiency and volume of the “working fluid”, the operating temperature of the MTA recharging and the distance of transportation from the heat source to the consumer. The article contains examples of the implementation of mobile heat accumulators in the world and in Ukraine, their technical and technological characteristics, scope and degree of efficiency. The technical indicators of the implemented project for the creation of a mobile heat accumulator located in a 20-foot container and intended for transportation by any available means of transport are given.

scholarly journals Improvement of methods of comprehensive assessment of the operation efficiency of centralized heat supply systems in municipal heat power engineering

2021 ◽  
Vol 2 (8 (110)) ◽  
pp. 16-22
Author(s):  
Igor Kozlov ◽  
Vyacheslav Kovalchuk ◽  
Oleksandr Klymchuk ◽  
Katerina Sova ◽  
Inna Aksyonova ◽  
...  
Keyword(s):  
Heat Supply ◽  
Boiler House ◽  
District Heating ◽  
Heat Supply System ◽  
Supply System ◽  
Comprehensive Assessment ◽  
Main Element ◽  
Heat Output ◽  
District Heating System ◽  
Overall Efficiency

The possibility of a comprehensive assessment of the efficiency of the operation of a district heating system based on the indicator of the overall efficiency of the equipment OEE (overall equipment efficiency) and its extension to the system as a whole is considered. The disunity of the direction of existing approaches in assessing the efficiency of operation of district heating systems does not allow a comprehensive assessment of the overall efficiency of the functioning of the technological sequence of the entire system. It is proposed to consider efficiency as the probability of full functioning of all elements of the heat supply system. It is shown that the heat output of the boiler house is proportional to the power consumption of the boiler house and is approximated by a periodic function. It is shown that the main element of the heat supply system, which determines its efficiency, is the heat-generating source. As a result of the study, it is determined that the efficiency of the heat-generating source functioning increases as the maximum value of its efficiency is reached. Numerical modeling has shown that the flexible use of the installed heat generator capacity contributes to an increase in the efficiency factor from 0.53 to 0.70 and the overall efficiency of the heat supply system can be increased by more than 30 %. When designing a boiler house, it was recommended to provide for the installation of capacities with gradation 1; 0.5; 0.25. It is shown that the OEE indicator allows one to characterize the efficiency of both the heat supply system as a whole and its individual components, and can be used in the design and analysis of the operation of systems

scholarly journals The state of modern heat power engineering and increasing the economic efficiency of heat supply

2018 ◽  
Vol 245 ◽  
pp. 05002 ◽  
Author(s):  
Tatiana Kharlamova ◽  
Ksenia Osipova
Keyword(s):  
Economic Development ◽  
Heat Supply ◽  
Heat Supply System ◽  
Electric Heating ◽  
Heating System ◽  
Integrated Approach ◽  
Supply System ◽  
Point Of View ◽  
Power Engineering ◽  
Heat Power

The article analyzes the current state of the Russian heat power engineering and identifies the main problems in its economic development. From the position of an integrated approach, the problems of the Russian heat supply system are divided into three categories: technological, economic and social. The using electricity for the needs of heat supply is determined as an effective way of solution these problems. In this context the electric heat supply is offered as an alternative to the modern heat supply system. The article identifies the main factors of electric heating, showing its economic advantages over other types of heat supply systems. On this basis the authors justify the prospects of electric heating system from the point of view of economic development of the Fuel Energy Complex and the national economy as a whole.

Effect of Operating Conditions on Water Injector of District Heating Supply System

2012 ◽  
Vol 152-154 ◽  
pp. 1041-1045
Author(s):  
Kun Zhang ◽  
Bo Zhang ◽  
Sheng Qiang Shen
Keyword(s):  
Pressure Loss ◽  
Heat Supply ◽  
District Heating ◽  
Heat Supply System ◽  
Area Ratio ◽  
Supply System ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Fluid Temperature

The effect is discussed between operating parameters of District Heat Supply System and injector geometry by calculation. It is illustrated that heat supply load affects injector geometry worst, and suction fluid temperature has great impact on injector’s area ratio, while pressure loss of system offers no effects on diffuser geometry of injector.

The Optimization Analysis of Hydraulic Junction Location of Three-Sources Branched Heat-Supply Network

2014 ◽  
Vol 638-640 ◽  
pp. 2101-2105
Author(s):  
Lin Hua Zhang ◽  
Dong Yang ◽  
Ting Ting Chen ◽  
Shou Jun Zhou ◽  
Ling Liu
Keyword(s):  
Heat Supply ◽  
District Heating ◽  
Heating System ◽  
Optimization Method ◽  
Heat Sources ◽  
Supply Network ◽  
Optimization Analysis ◽  
District Heating System ◽  
Circulating Water ◽  
Water Pumps

In this paper, we shall first briefly introduce the hydraulic junction of three-sources branched heat-supply network and the related optimization method. It's difficult to guarantee that the system runs in optimal state and it increases energy consumption in the system. In view of this situation this paper proposes a method to find the optimal positions of hydraulic intersections based on analyzing a real heating system with three heat sources in Jining. The optimization objective is to minimize the electric power consumption of circulating water pumps in district heating system. Finally, optimization programs are designed and the optimized results verify the feasibility and validity of the method compared with conventional experience values.

scholarly journals Methodology of Indicative Analysis to Determine the Municipal Units for Implementation of the Energy-Saving Strategy

2020 ◽  
Vol 24 (2) ◽  
pp. 115-123
Author(s):  
Valery Stennikov ◽  
Ivan Postnikov ◽  
Olga Edeleva
Keyword(s):  
Energy Efficiency ◽  
District Heating ◽  
Heating System ◽  
Eastern Siberia ◽  
District Heating System ◽  
Energy Efficiency Measures ◽  
Second Stage ◽  
Efficiency Measures ◽  
Irkutsk Region ◽  
Order Preference

AbstractThis paper proposes a two-stage approach to choose the priority municipal units for implementing required energy efficiency measures in a district heating system. On the first stage the existing state of district heating system of Irkutsk region (Eastern Siberia) was analysed. On the second stage the choice of municipal units is considered as the Multiple Criteria Decision Analysis (MCDA) problem. The authors selected the most valuable criteria such as tariffs, subsidies and etc. that are rather sensitive for consumers and budget. The Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) was applied to identify the priority municipal units for implementing energy efficiency measures.

scholarly journals Model research of the energy efficiency of a cogeneration backpressure steam turbine installation

2020 ◽  
Vol 207 ◽  
pp. 02004
Author(s):  
Ivan Genovski ◽  
Kaloyan Hristov
Keyword(s):  
Energy Efficiency ◽  
Steam Turbine ◽  
Climatic Factors ◽  
District Heating ◽  
Heating System ◽  
Production Method ◽  
District Heating System ◽  
Mode Of Operation ◽  
Heating Water ◽  
Turbine Installation

In the contemporary district heating systems (DHS) heat energy for the customers is generated by cogeneration method, which leads to the saving of primary energy resources compared to the separate production method. The most widespread technology for combined production is based on steam turbine installations with adjustable steam extraction and backpressure steam turbine. In these technologies district heating water is heated to the required temperature either in district heaters in case of steam turbine with adjustable steam extractions or in boiler-condenser in case of backpressure steam turbine installations. The temperature of the district heat water at the inlet of the CHP installation depends on the mode of operation of the DHS. The heat load, distributed to consumers, is regulated at the heat source (CHP installation) by temperature and flow rate of the district heating water, mainly following the change in climatic factors. Current study presents the development of a simulation model of existing CHP backpressure steam turbine. The object studied is a backpressure steam turbine type SST-300 CE2L/V36S. Presented are results from the validation of the simulated model with data from the design documentation. The model has been used to study the energy efficiency of a steam turbine installation based on multivariate simulation calculations. The results obtained relate the energy efficiency indicators of CHP backpressure steam turbine with the factors that characterize the mode of operation of the district heating system.

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