A Fault Handling Process for Faults in District Heating Customer Installations

Faults in district heating (DH) customer installations cause high return temperatures, which have a negative impact on both current and future district heating systems. Thus, there is a need to detect and correct these faults soon after they occur to minimize their impact on the system. This paper, therefore, suggests a fault handling process for the detection and elimination of faults in DH customer installations. The fault handling process is based on customer data analysis since many faults manifest in customer data. The fault handling process was based on an analysis of the results from the previous fault handling studies, as well as conducting a workshop with experts from the DH industry. During the workshop, different organizational and technical challenges related to fault handling were discussed. The results include a presentation of how the utilities are currently working with fault handling. The results also present an analysis of different organizational aspects that would have to be improved to succeed in fault handling. The paper also includes a suggestion for how a fault handling process based on fault detection using data analysis may be designed. This process may be implemented by utilities in both current and future DH systems that interested in working more actively with faults in their customer installations.

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METHODS FOR CALCULATING NETWORK PARAMETERS IN REGULATING THE COMPLEX OF WORKS ON MODERNIZATION OF THE HEAT SUPPLY SECTOR

10.32782/2224-6282/164-26 ◽

2020 ◽

Author(s):

Nadiia Yushchenko ◽

Keyword(s):

Heat Supply ◽

Power Plants ◽

Negative Impact ◽

Critical Path ◽

District Heating ◽

Heat Energy ◽

Heating Systems ◽

Network Parameters ◽

District Heating Systems ◽

Heating Networks

In Ukraine, where, unlike the countries of the European Union that use district heating systems and have invested more than €80 billion in their modernization over the past 30 years, during 1990-2020 there was no necessary investment in the modernization of district heating systems, especially badly worn out heating systems combined heat and power plants and heating networks, losses of thermal energy in heat sources and networks are the largest in Europe, rational work is needed to further improve the technical level of heat supply systems based on innovative, highly efficient technologies and equipment; reduction of non-production losses of heat energy and fuel consumption; ensuring controllability, reliability, safety and efficiency of heat supply; reducing the negative impact on the environment. And in this case, the planning of works that are significant in terms of volume, cost and time becomes especially relevant to the use of economic and mathematical models and methods existing in the theory of planning and network management, such as the Critical Path Method, Program Evaluation and Review Technique, Graphical Evaluation and Review Technique, which involve working with networks, and related software like Project Standard, Open Plan, Primavera Project Planner, SureTrak Project Manager and others that will help generate invariants of management decisions regarding the sequencing and timing of use limited resources throughout the entire period of the project, dynamically adjust the timing of the start of each type of work, carry out the optimal distribution of funds allocated to the project in terms of reducing the duration of the entire project, analyze the trade-off relationships between p the costs and timing of various works, taking into account the available reserve of time, when it comes to a large number of interrelated works that must be performed in a strict technological sequence, require timing and control in order to achieve the task. The article is devoted to the systematization and review of such methods for calculating network parameters (network graphics) such as analytical, matrix, tabular and with the use of electronic computers (computers). The expediency of adapting them to the practice of effective planning and management of modernization, reconstruction and replacement of technological equipment of heat points and heating networks of heat power enterprises in order to reduce costs in the production, transmission and distribution of heat energy for the implementation of the Energy Strategy of Ukraine for the period up to 2035 is substantiated.

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Performance indicators of District Heating Systems in Italy – Insights from a data analysis

Applied Thermal Engineering ◽

10.1016/j.applthermaleng.2018.01.125 ◽

2018 ◽

Vol 134 ◽

pp. 194-202 ◽

Cited By ~ 7

Author(s):

Michel Noussan

Keyword(s):

Data Analysis ◽

Performance Indicators ◽

District Heating ◽

Heating Systems ◽

District Heating Systems

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Towards On-line Fault Detection and Diagnostics in District Heating Systems

Energy Procedia ◽

10.1016/j.egypro.2017.03.567 ◽

2017 ◽

Vol 105 ◽

pp. 1960-1966 ◽

Cited By ~ 3

Author(s):

Nathan Zimmerman ◽

Erik Dahlquist ◽

Konstantinos Kyprianidis

Keyword(s):

Fault Detection ◽

District Heating ◽

Heating Systems ◽

District Heating Systems ◽

On Line

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CONCEPTUAL POSITIONS OF MODERNIZATION OF EXISTING INEFFICIENT DISTRICT HEATING SYSTEMS

Energy Technologies & Resource Saving ◽

10.33070/etars.2.2017.02 ◽

2017 ◽

pp. 11-21

Author(s):

Ye.Ye. Nikitin

Keyword(s):

Energy Efficient ◽

Mutual Influence ◽

District Heating ◽

Current Status ◽

Cognitive Approach ◽

Heating Systems ◽

Energy Management Systems ◽

Current State ◽

Self Sufficiency ◽

District Heating Systems

The current situation in the sphere of district heating is analysed on the basis of use of the cognitive approach. The presence of closed chains of cause-effect relationships of negative factors and conflicts of target settings of the subjects in the field of district heating is shown. The conceptual model of energy efficient modernization of district heating systems is proposed. This model includes indicators of the current status of heat sources, networks and heat consumers, energetic and economic models, restrictions, procedure of forming and analysis of the mutual influence of the recommended projects. The quantitative data on indicators of the current state of district heating systems of the cities of Ukraine are presented. The interrelation between indicators of the current state and projects of energy efficient modernization of district heating systems is shown. Assessment of energy self-sufficiency of municipal district heating systems on condition of thermal modernization of buildings is carried out. The creation of energy management systems at the district heating enterprises is proposed. Bib. 6, Fig. 7, Tab. 5.

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Bioenery Combines in District Heating Systems: Prospects for a Future Growth Industry?

SSRN Electronic Journal ◽

10.2139/ssrn.1759964 ◽

2010 ◽

Author(s):

Erik Axelsson ◽

Anders Sandoff ◽

Conny Overland

Keyword(s):

District Heating ◽

Heating Systems ◽

District Heating Systems ◽

Growth Industry ◽

Future Growth

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PUMPED THERMAL ELECTRICITY STORAGE INTEGRATION IN DISTRICT HEATING SYSTEMS

2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) ◽

10.1109/rtucon51174.2020.9316560 ◽

2020 ◽

Author(s):

Dmitrijs Rusovs ◽

Sigurds Jaundalders ◽

Peteris Stanka

Keyword(s):

District Heating ◽

Heating Systems ◽

Electricity Storage ◽

District Heating Systems

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Technology Pathways and Economic Analysis for Transforming High Temperature to Low Temperature District Heating Systems

Energies ◽

10.3390/en14113218 ◽

2021 ◽

Vol 14 (11) ◽

pp. 3218

Author(s):

Pedro Durán ◽

Herena Torio ◽

Patrik Schönfeldt ◽

Peter Klement ◽

Benedikt Hanke ◽

...

Keyword(s):

Sensitivity Analysis ◽

Renewable Energy ◽

High Temperature ◽

Low Temperature ◽

Economic Analysis ◽

District Heating ◽

Heating System ◽

District Heating System ◽

Heating Systems ◽

District Heating Systems

There are 1454 district heating systems in Germany. Most of them are fossil based and with high temperature levels, which is neither efficient nor sustainable and needs to be changed for reaching the 2050 climate goals. In this paper, we present a case study for transforming a high to low temperature district heating system which is more suitable for renewable energy supply. With the Carnot Toolbox, a dynamic model of a potential district heating system is simulated and then transformed to a low temperature supply. A sensitivity analysis is carried out to see the system performance in case space constrains restrict the transformation. Finally, an economic comparison is performed. Results show that it is technically possible to perform the transformation until a very low temperature system. The use of decentralized renewable sources, decentralized heat storage tanks and the placement of a heat pump on each building are the key points to achieve the transformation. Regarding the sensitivity analysis, the transformation is worth doing until the seasonal storage and solar collector field sizes are reduced to 60% and 80% of their values in the reference case, respectively. The economic analysis shows, however, that it is hard for highly efficient low temperature renewable based heat networks to compete with district heating systems based on a centralized fossile CHP solution. Thus, though the presented transformation is technically possible, there is a strong need to change existing economic schemes and policies for fostering a stronger promotion of renewable energy policies in the heat sector.

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