Combustion of wood pellets in a low-power multi-fuel automatically stoked heating boiler

• Autorzy: Zima Wiesław , Ojczyk Grzegorz

Identyfikatory

DOI

10.24425/ather.2022.140930

• Języki publikacji: EN

Abstrakty

EN

This paper presents a test stand equipped, among others, with two boilers intended for the combustion of solid fuels. The first is a single-fuel boiler designed to burn wood pellets only. The second is a multi-fuel boiler intended for the combustion of mainly hard coal (basic fuel) with the grain size of 0.005–0.025 m. Wood pellets can also be fired in this boiler, which in such a case are treated as a substitute fuel. There is a developed and verified algorithm for the control of the multi-fuel boiler operation in a wide range of loads for the basic fuel. However, for the substitute fuel (wood pellets) there are no documented and confirmed results of such testing. The paper presents selected results of testing performed during the combustion of wood pellets in a multi-fuel automatically stoked boiler. Several measuring series were carried out, for which optimal operating conditions were indicated. These conditions may serve as the basis for the development of the boiler operation control algorithm. A detailed analysis was carried out of the flue gas temperatures obtained at the outlet of the boiler combustion chamber and of the contents of carbon monoxide and oxygen in the boiler flue gases.

Słowa kluczowe

EN

multi-fuel heating boiler; wood pellets; substitute fuel; thermal tests; boiler optimal operating points

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2022
• Tom: Vol. 43, no 1
• Strony: 169--184
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Zima Wiesław

• Cracow University of Technology, Department of Energy, al. Jana Pawła II 37, 31-864 Kraków, Poland

autor

Ojczyk Grzegorz

• MTHE Modern Technologies in Heating Engineering, Młyńska-Boczna 7/2, 31-470 Kraków, Poland

Bibliografia

• [1] Announcement of the Sejm Speaker of the Republic of Poland on the promulgation of a consolidated text of the Act on renewable energy sources. Journal of Laws – Republic of Poland (Dziennik Ustaw Rzeczypospolitej Polskiej) 2021, Item 610 (in Polish).
• [2] Regulation of the Minister of Development and Finance on the requirements for solid-fuel boilers. Journal of Laws – Republic of Poland (Dziennik Ustaw Rzeczypospolitej Polskiej) 2017, Item 1690 (in Polish).
• [3] EN 303-5:2021: Heating boilers – Part 5: Heating boilers for solid fuels, manually and automatically stoked, nominal heat output of up to 500 kW – Terminology, requirements, testing and marking.
• [4] Poland’s Energy Policy until 2040. Ministry of Climate and the Environment, Appendix to Resolution 22/2021 of the Council of Ministers, 2021 (in Polish).
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• [13] https://www.herz-energie.at/pl/ (accessed 6 Sept. 2021).
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• [16] https://www.keison.co.uk/ (accessed 17 Aug. 2021).
• [17] Kuznetsov N.V., Mitor V.V., Dubovsky I.E., Karasina E.S. (Eds.): Thermal Calculation of Steam Boilers. Normative Method (2nd Edn.). Energia, Moscow 1973 (in Russian).
• [18] Rutkowski Ł., Szczygieł I.: Calculation of the furnace exit gas temperature of stoker fired boilers. Arch. Thermodyn. 42(2021), 3, 3–24.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).