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Förbränning av träpellets och pelleterad halm i en 40 kW rosterreaktor
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2012 (Swedish)Independent thesis Basic level (university diploma), 180 HE creditsStudent thesis
Abstract [sv]

The project focus on combustion of softwood pellets and pellets in a 40 kW grate fire reactor at TEC-Lab. Dept Applied Physics and Electronics at Umeå University. Experiments were performed at four primary airs to fuel ratios (0.7 to 1.3), where aspects such as temperature profile, levels of gases (CO and NO), sintering-/-slagging and unburned fraction of the ashes were studied. Four different fuel loads were used for wood pellets (10, 20 and 30 kW) and one fuel load for straw (10 kW). Combustion of straw proved very difficult to ignite, and also led to other combustion-related technical problem such as slag formation due to the relatively low melting temperature-/-slag temperature of the straw. Causing undesired silicate melt on the grate. The straw was only possible to use low load operation (10 kW) because it was difficult to manage. The temperature of the bed varied between the studied cases with varying fuel loads and air to fuel ratios.

Place, publisher, year, edition, pages
2012. , 43 p.
Keyword [sv]
Förbränning, rosterreaktor, ETPC
National Category
Engineering and Technology Energy Engineering
URN: urn:nbn:se:umu:diva-89014OAI: diva2:718122
Subject / course
Educational program
Bachelor of Science Programme in Energy Engineering
Available from: 2014-05-21 Created: 2014-05-19 Last updated: 2014-05-21Bibliographically approved

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