scholarly journals Application of Smart Technologies in Metropolis GZM to Reduce Harmful Emissions in District Heating Systems

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7665
Author(s):  
Grzegorz Kinelski ◽  
Jakub Stęchły ◽  
Adrian Sienicki ◽  
Kai Czornik ◽  
Piotr Borkowski
Keyword(s):  
Large Scale ◽  
District Heating ◽  
Heat Consumption ◽  
Automation System ◽  
Public Attention ◽  
Heating Systems ◽  
Harmful Emission ◽  
Harmful Emissions ◽  
District Heating Systems ◽  
Smart Technologies

Harmful emissions from heating installations have recently received public attention in Poland. Polish municipalities mainly take their heat from local district heating networks with large-scale coal-fired heat sources. Today, transition to nonemissive sources on this scale would be impractical. The easiest way to reduce carbon emissions is to limit heat consumption, but at the same time, to preserve thermal comfort, the application of smart technologies is necessary. Veolia operates on 71 district heating systems in Poland, including Warsaw, Lodz, and Poznan. Since heat consumption in Warsaw and Metropolis GZM is at a similar level, this is a case study of Hubgrade automation system application within the Warsaw district heating network. This paper also presents results of simulation of harmful emission reduction potential in Metropolis GZM. Simulation results show that there is a potential for saving approximately 275 kt of CO2 for the whole Metropolis GZM.

scholarly journals Modelling Influential Factors of Consumption in Buildings Connected to District Heating Systems

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 586 ◽  
Author(s):  
Danica Maljkovic
Keyword(s):  
Prediction Accuracy ◽  
Demographic Data ◽  
District Heating ◽  
Demographic Variables ◽  
Influential Factors ◽  
Comfort Level ◽  
Heat Consumption ◽  
Second Step ◽  
Heating Systems ◽  
District Heating Systems

Assessing the influential factors on measured (or allocated) heat consumption in district heating systems is often limited by the available data. Within a project of modelling consumption in district heating systems in Croatia for the Ministry of Environmental Protection and Environment, an access to a complete billing database of the largest Croatian district heating company was granted. The company supplies approximately 126,400 final consumers (both households and businesses) over 375 km of distribution network. The billing database has 40 vectors in a few million single inputs. In addition to these data, a questionnaire is distributed to the final consumers in several buildings labelled as “model buildings”, gathering behavioural and demographic data of final consumers (such as occupancy, mode of space usage, heat comfort level, age of occupants, etc.). The two sets of data are then merged, and a correlation analysis is performed. Furthermore, a two-step regression analysis is performed based on variables from billing database in the first step, with added behavioural and demographic variables obtained from the questionnaires in the second step. The models from two steps are compared, tested and interpreted. Results of the most influential factors on heat consumption in district heating systems are given and the influence of the behavioural/demographic variables on the prediction accuracy of heating consumption is interpreted.

scholarly journals Testing, Development and Demonstration of Large Scale Solar District Heating Systems

2015 ◽  
Vol 70 ◽  
pp. 568-573 ◽  
Author(s):  
Simon Furbo ◽  
Jianhua Fan ◽  
Bengt Perers ◽  
Weiqiang Kong ◽  
Daniel Trier ◽  
...  
Keyword(s):  
Large Scale ◽  
District Heating ◽  
Heating Systems ◽  
District Heating Systems

scholarly journals Longevity and power density of intermediate-to-deep geothermal wells in district heating applications

2021 ◽  
Vol 136 (1) ◽  
Author(s):  
Eero Hirvijoki ◽  
David Pfefferlé ◽  
Manasvi Lingam
Keyword(s):  
Heat Transfer ◽  
Power Density ◽  
Large Scale ◽  
Hot Spot ◽  
District Heating ◽  
Heat Sources ◽  
Heating Systems ◽  
District Heating Systems ◽  
Geothermal Wells ◽  
The City

AbstractThis paper assesses the potential of intermediate-to-deep geothermal wells for district heating purposes in non-hot spot regions as a means for replacing carbon-intensive heat sources. In analysing the problem of heat transfer from the bedrock to a flowing coolant in the well, we perform parameter scans to assess the longevity and power density of different-size wells and derive analytical estimates to explain salient characteristics of the well behaviour. The results are then utilized to illustrate how intermediate-to-deep geothermal wells would compare with the requirements of typical large-scale district heating systems, by using the city of Helsinki in Finland as an example.

scholarly journals Energy efficient modernization of KVG and TGV boilers

2021 ◽  
Vol 36 ◽  
pp. 22-35
Author(s):  
P. Glamazdin ◽  
D. Glamazdin
Keyword(s):  
Operating Time ◽  
Small Diameter ◽  
District Heating ◽  
Hot Water ◽  
Automation System ◽  
Convective Heating ◽  
Optimized Design ◽  
Efficient Design ◽  
Heating Systems ◽  
District Heating Systems

At present, the district heating systems of Ukrainian cities are in a critical state. They need significant modernization. This especially applies to very important components of district heating systems – heating water boilers. Unsatisfactory condition of boilers is mainly due to the obsolescence of basic equipment, including boilers. The operating time of them exceeds the passport lifetime. There ia a lack of modern automation, especially in terms of controlling operating modes. Nominal power of them exceeds the real heat loads. The range of hot water boilers used is not large. These are low-power boilers of the series NDIST, "Universal", "Energiia", "Fakel" and others, medium-power boilers of the series TVG and KVG and high-power boilers of series PTVM and KVGM. According to their prevalence, special attention should be paid to boilers of the series TVG and KVG. The series are installed on quarter boiler houses. The boilers of these series have an efficient design of the furnace volume and an optimized design of the convective part. Nevertheless, in terms of automation, gas supply and air supply systems, they no longer meet today's requirements. They are outdated comparing to the achieved level of technical solutions. The article discusses the main shortcomings of the design of boilers: insufficient durability of the gas collector in the hearth burner, small diameter of the pipes of the convective part and the use of fireclay materials in the setting of the burners. The first two shortcomings were overcome by the developers by the increase in the diameter of the pipes of convective packages and the modernization of MPIG-3 hearth burners. The third shortcoming should be overcomed by replacing the setting with a modern one during off-season repairs. Reserves for improving the energy efficiency of boilers of these series are found. To do this, it is necessary to install additional convective heating surfaces (economizers or air-heaters), replace the setting and equip the boilers with a modern automation system with cascading the burners. It allows improving efficiency up to 94...95 % and environmental performance according to the modern requirements.

scholarly journals Geothermal resources of Kamchatka and the nearest prospects of their development

2019 ◽  
pp. 50-65
Author(s):  
A. V. Kiryukhin ◽  
V. M. Sugrobov
Keyword(s):  
Heat Generation ◽  
Heat Supply ◽  
District Heating ◽  
Electrical Energy ◽  
Heat Consumption ◽  
Electrical Performance ◽  
Geothermal Resources ◽  
Heating Systems ◽  
District Heating Systems

The forecast geothermal resources of Kamchatka are sufficient to generate 3900 MW of electrical energy. The same resources for heat supply are estimated at a capacity of 1350 MWt (thermal). Thermohydrodynamic TOUGH2 modeling of exploitation of already identified productive hydrogeothermal reservoirs with installed energy properties allows us to predict: 1) the possibility of increasing the electrical performance of already operating areas of the Mutnovsky field up to 105 MW and the Pauzhetsky field up to 11 MW using binary technologies; 2) the possibility of increasing heat generation at the Paratunskoye field with submersible pumps up to 216 MWt, which will fully ensure the heat consumption of the district heating systems of Petropavlovsk-Kamchatsky.

scholarly journals Integration of large-scale heat pumps in the district heating systems of Greater Copenhagen

Energy ◽  
2016 ◽  
Vol 107 ◽  
pp. 321-334 ◽  
Author(s):  
Bjarne Bach ◽  
Jesper Werling ◽  
Torben Ommen ◽  
Marie Münster ◽  
Juan M. Morales ◽  
...  
Keyword(s):  
Large Scale ◽  
District Heating ◽  
Heat Pumps ◽  
Heating Systems ◽  
District Heating Systems

scholarly journals Methods for Large-Scale Monitoring of District Heating Systems Using Airborne Thermography

2014 ◽  
Vol 52 (8) ◽  
pp. 5175-5182 ◽  
Author(s):  
Ola Friman ◽  
Peter Follo ◽  
Jorgen Ahlberg ◽  
Stefan Sjokvist
Keyword(s):  
Large Scale ◽  
District Heating ◽  
Heating Systems ◽  
District Heating Systems

scholarly journals Development of operating conditions of district heating systems with quality regulation

2019 ◽  
Vol 102 ◽  
pp. 03011
Author(s):  
Vyacheslav V. Tokarev ◽  
Zoya I. Shalaginova
Keyword(s):  
Large Scale ◽  
Thermal Characteristics ◽  
District Heating ◽  
Operating Regime ◽  
Operating Conditions ◽  
Engineering Structures ◽  
Heating Systems ◽  
Quality Regulation ◽  
District Heating Systems ◽  
Development Technology

District heating systems (DHS) have developed as large-scale and very complex engineering structures. In different countries of the world, are used various strategies of their regulation: by quality, by quantity, by combining of quality and quantity. The purpose of the operating conditions development is to find such conditions under which the supply of consumers with the required amount of heat by given quality while observing all the technical and technological requirements. The task of calculating the DHS conditions is to find the distribution of flows, pressures and temperatures across all elements of the design scheme for a given topology, hydraulic and thermal characteristics of its elements and boundary conditions. There are two types of calculation of DHS conditions: adjustment and verification. In article presented DHS operating regime development technology. The “Angara-HN” software can perform the whole complex of calculations.

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