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Transactions: INTERNATIONAL JOURNAL of ENERGY
Transactions ID Number: 20-631
Full Name: Jan Hrdlicka
Position: Assistant Professor
Age: ON
Sex: Male
Address: Technicka 4, Prague
Country: CZECH REPUBLIC
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E-mail address: jan.hrdlicka@fs.cvut.cz
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Title of the Paper: Advanced Features of a Small-Scale Biomass Boiler Control for Emission Reduction
Authors as they appear in the Paper: Jan Hrdlicka, Bohumil lSulc
Email addresses of all the authors: jan.hrdlicka@fs.cvut.cz,bohumil.sulc@fs.cvut.cz
Number of paper pages: 8
Abstract: Small scale biomass combustion is a specific field of control issues where one of the most important features is cost effectiveness. It means that any kind of control system improvement should be done with the lowest possible additional costs. Generally, the basic control of such kind of boiler regulates temperature of outlet heating water. This control can be also performed by a PLC. In such a case, there is possibility to enhance this control by additional algorithms that are responsible for extended optimization functions. Main focus of such optimization should be mainly economic viewpoint of the boiler's operation regarding particularly decrease of fuel consumption and therefore cost saving. Other strong interest is reduction of several unwanted gaseous emissions, mainly carbon monoxide and unburned hydrocarbons. In the interest can be also nitrogen oxides emissions that are much more complicated to control in such a small boiler. This previously minor problem !
has become significant with the large expansion of the small-size biomass-fired boilers. The combustion process consists of phenomena that we have little information about for an exact mathematical description. The equations of the chemical reactions are known, but in reality the combustion of biomass is much more complicated and more variable than a mathematical model can express. Therefore, techniques searching extreme are more suitable than controllers requiring a mathematical model in design or tuning. In such a way it is possible to design a controller that is able to control the combustion process effectively over the whole operation range.
Keywords: PI temperature control, Combustion, Emissions, Efficiency, Fuel consumption
EXTENSION of the file: .doc
Special (Invited) Session: On-line Operating Adjustment of Small Biomass Fired Boilers Optimizing CO and NOx Emissions
Organizer of the Session: 650-085
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