Improving the efficiency of heat release regulation in centralized heat supply systems
DOI:
https://doi.org/10.31548/energiya2020.05.081Abstract
Ensuring optimal hydraulic and thermal regimes in district heating systems (DHS) in the regulation of heat supply is an important factor in improving the energy and economic efficiency of DHS. In addition, high efficiency of the HS system is a factor that can ensure the preservation of its vital functions.
Solving the problem of increasing the energy efficiency of the heat supply system is a complex problem that requires changes at all stages of heat transformation: in the energy source, heating networks and subscriber heating systems of heat consumers.
The purpose of this study is to identify the impact of heat dissipation control processes in district heating systems on their energy and economic efficiency, provide recommendations for improving control processes taking into account modern challenges and regulatory requirements, analyze heat dissipation temperature schedules and select the optimal temperature schedule.
It is shown that the optimal is the combined quantitative and qualitative regulation of heat release, which should be carried out both at the energy source and at consumers. The paper considers the possibility of using combined control systems in the existing district heating systems of Ukrainian cities. It is shown that the achievement of high energy efficiency is possible only with the introduction of automatic individual heating points with weather control and pressure drop regulators at the inlet to the buildings in the subscriber heating systems. Calculations of the amount of heat consumption reduction of centralized heat supply systems with the introduction of optimal control systems are performed.
Key words: centralized heat supply system, heat supply regulation, heat release temperature schedule, reduction of heat losses in heat supply systems
References
Modernizatsiya sistemy tsentralizovannogo teplosnabzheniya v Ukraine: uchet tepla i vnedreniye platezhey na osnove ego fakticheskogo potrebleniya. (2012). [Modernization of the district heating system in Ukraine: heat metering and introduction of payments based on its actual consumption.]. Otchet MBRR po teme «Modernizatsiya sistemy tsentralizovannogo teplosnabzheniya v Ukraine». Izd. Mezhdunarodnyy bank rekonstruktsii i razvitiya, 64.
DBN V.2.5-39:2008 «Teplovi merezhi» (2009). [Thermal networks]. Kyiv: Minrehionbud, 56.
DBN V.2.5-67:2013 «Opalennia, ventyliatsiia ta kondytsiiuvannia» (2013). [Heating, ventilation and air conditioning]. Kyiv, 141.
Pyrkov, V. V. (2007). Sovremennyye teplovyye punkty. Avtomatika i regulirovaniye [Modern heating points. Automation and regulation]. Kyiv: IIDP «Takі spravi», 252.
Bogoslovskiy, V. N. (1991). Otopleniye [Heating]. Moskow: Stroyizdat, 787.
Downloads
Published
Issue
Section
License
Relationship between right holders and users shall be governed by the terms of the license Creative Commons Attribution – non-commercial – Distribution On Same Conditions 4.0 international (CC BY-NC-SA 4.0):https://creativecommons.org/licenses/by-nc-sa/4.0/deed.uk
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
