Optimisation of a Swedish district heating system with reduced heat demand due to energy efficiency measures in residential buildings

Energy Policy ◽  
2011 ◽  
Vol 39 (12) ◽  
pp. 7839-7852 ◽  
Author(s):  
M. Åberg ◽  
D. Henning
Keyword(s):  
Energy Efficiency ◽  
Residential Buildings ◽  
District Heating ◽  
Heating System ◽  
District Heating System ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
Heat Demand

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 Steam system optimization of an industrial heat and power plant

2020 ◽  
Vol 24 (6 Part A) ◽  
pp. 3649-3662
Author(s):  
Risto Filkoski ◽  
Ana Lazarevska ◽  
Daniela Mladenovska ◽  
Dejan Kitanovski
Keyword(s):  
Energy Efficiency ◽  
Power Plant ◽  
Natural Gas ◽  
District Heating ◽  
Heating System ◽  
Operating Costs ◽  
District Heating System ◽  
Significant Potential ◽  
Efficiency Measures ◽  
Steam System

Improvement of the energy conversion processes efficiency helps to achieve a more reliable energy supply, a cleaner environment, more competitive businesses, and higher living standard. Industry data indicate significant potential for improving the efficiency of steam systems and minimizing their operating costs by implementing various measures. The present work is a result of a systematic approach for energy performance analysis and identification of opportunities for optimizing the steam-condensate system of the combined heat and power plant ESM Energetika, Skopje, North Macedonia. The boiler plants provide superheated steam used in a hot-water station for the district heating system, for electricity generation, and as process steam for industrial customers. As the main operating costs of the plant stem from the natural gas consumption, the implementation of a set of energy efficiency measures will lead to its reduction, accompanied by less environmental impact. As a result of the system analysis, a number of energy efficiency measures have been identified. For each measure, the impact on individual parts of the system, as well as on the system as a whole, is evaluated using the steam system modeller tool. This paper elaborates some of the identified measures that are considered more reliable from an operational and financial aspect, mainly focused on steam production for the district heating system. Based on a conservative approach, significant potential for savings of natural gas, electrical energy, and treated water is estimated, which will lead to annual financial savings of about 245000 Euro.

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.

Determinants of Southern Italian households’ intention to adopt energy efficiency measures in residential buildings

2017 ◽  
Vol 153 ◽  
pp. 83-91 ◽  
Author(s):  
M. Irene Prete ◽  
Luigi Piper ◽  
Cristian Rizzo ◽  
Giovanni Pino ◽  
Mauro Capestro ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Residential Buildings ◽  
Energy Efficiency Measures ◽  
Intention To Adopt ◽  
Efficiency Measures

scholarly journals Excess heat utilization combined with thermal storage integration in district heating systems using renewables

2020 ◽  
Vol 24 (6 Part A) ◽  
pp. 3673-3684
Author(s):  
Borna Doracic ◽  
Marino Grozdek ◽  
Tomislav Puksec ◽  
Neven Duic
Keyword(s):  
Service Sector ◽  
Peak Load ◽  
District Heating ◽  
Thermal Storage ◽  
Heating System ◽  
District Heating System ◽  
Heating Systems ◽  
Excess Heat ◽  
Heat Demand ◽  
District Heating Systems

District heating systems already play an important role in increasing the sustainability of the heating sector and decreasing its environmental impact. However, a high share of these systems is old and inefficient and therefore needs to change towards the 4th generation district heating, which will incorporate various energy sources, including renewables and excess heat of different origins. Especially excess heat from industrial and service sector facilities is an interesting source since its potential has already been proven to be highly significant, with some researches showing that it could cover the heat demand of the entire residential and service sector in Europe. However, most analyses of its utilisation in district heating are not done on the hourly level, therefore not taking into account the variability of its availability. For that reason, the main goal of this work was to analyse the integration of industrial excess heat into the district heating system consisting of different configurations, including the zero fuel cost technologies like solar thermal. Furthermore, cogeneration units were a part of every simulated configuration, providing the link to the power sector. Excess heat was shown to decrease the operation of peak load boiler and cogeneration, that way decreasing the costs and environmental effect of the system. However, since its hourly availability differs from the heat demand, thermal storage needs to be implemented in order to increase the utilisation of this source. The analysis was performed on the hourly level in the energyPRO software

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.

scholarly journals Techno-economic analysis of implementing thermal storage for peak load shaving in a campus district heating system with waste heat from the data centre

2021 ◽  
Vol 246 ◽  
pp. 09003
Author(s):  
Haoran Li ◽  
Juan Hou ◽  
Yuemin Ding ◽  
Natasa Nord
Keyword(s):  
Waste Heat ◽  
Peak Load ◽  
District Heating ◽  
Thermal Storage ◽  
Heating System ◽  
Water Tank ◽  
District Heating System ◽  
Heating Systems ◽  
Heat Demand ◽  
District Heating Systems

Peak load has significant impacts on the economic and environmental performance of district heating systems. Future sustainable district heating systems will integrate thermal storages and renewables to shave their peak heat demand from traditional heat sources. This article analysed the techno-economic potential of implementing thermal storage for peak load shaving, especially for the district heating systems with waste heat recovery. A campus district heating system in Norway was chosen as the case study. The system takes advantage of the waste heat from the campus data centre. Currently, about 20% of the heating bill is paid for the peak load, and a mismatch between the available waste heat and heat demand was detected. The results showed that introducing water tank thermal storage brought significant effects on peak load shaving and waste heat recovery. Those effects saved up to 112 000 EUR heating bills annually, and the heating bill paid for the peak load could be reduced by 15%. Meanwhile, with the optimal sizing and operation, the payback period of the water tank could be decreased to 13 years. Findings from this study might help the heat users to evaluate the economic feasibility of introducing thermal storage.

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