Dynamics of a boiler with natural water circulation

Sedić, Almir and Katulić, Stjepko and Pavković, Danijel (2013) Dynamics of a boiler with natural water circulation. = Dynamics of a boiler with natural water circulation. In: Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES Conference, 22-27.09.2013., Dubrovnik, Hrvatska.

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Official URL: https://www.bib.irb.hr/704813

Abstract

Republic of Croatia has inherent obligations to decrease its CO2 emissions in accordance with the Kyoto protocol and participation in the European Emissions Trading Scheme (EETS), which may impose notable additional running costs to heavy industries. These restrictive measures should therefore motivate the aforementioned industries (such as oil industry) to adopt low- emission technologies and optimize the production process in order to minimize the production-related emissions. As a basis for the production process emissions minimization, an appropriate detailed model of the production plant needs to be built. To this end, this paper presents the results of modeling of a natural water circulation boiler with one steam generation drum operating in a industrial power plant. The model accounts for all of key static and dynamic disturbance effects which may affect the safe and reliable plant operation. The behavior of the boiler media (water and steam) is modeled based on fundamental physical laws, thus resulting in a comprehensive nonlinear dynamic boiler model. The resulting model can be used to simulate any conceivable boiler operating regime because it does not contain any additional restrictions or operating regime-specific empirical relationships. In order to illustrate the effectiveness of the proposed model, boiler responses to typical disturbances have been analyzed for a wide range of operating regimes, including the case of water level control, which has shown rather good agreement with experimental data. The proposed model can be easily extended/modified for the purpose of dynamics analysis for boiler systems utilizing alternative fuels (bio-fuels), which may be characterized by notably different disturbance response speed, thus enabling optimization of the dedicated control system design.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): natural circulation boiler, nonlinear dynamic model, physical modeling, on-line monitoring, process disturbance analysis
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 500 Department of Energy, Power Engineering and Environment > 510 Power Engineering and Energy Management Chair
900 Department of Robotics and Production System Automation > 910 Chair of Engineering Automation
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 01 Apr 2016 10:15
Last Modified: 13 Sep 2018 11:49
URI: http://repozitorij.fsb.hr/id/eprint/5358

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