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Start-up emissions from residential down-draught wood log boilers
Luleå University of Technology, Department of Engineering Sciences and Mathematics.
2009 (English)In: BIOENERGY 2009: Sustainable Bioenergy Business 4th International Bioenergy Conference From 31st of August to 4th of September 2009 / [ed] Mia Savolainen, Jyväskylä: FINBIO - The Bioenergy Association of Finland , 2009, 525-533 p.Conference paper (Refereed)
Abstract [en]

Start-up emissions can be substantial and even dominating in real use. There are few published investigations regarding the relative importance of different parameters on the start-up emissions. It has though recently been stated that for down-draught boilers, best results are achieved if the wood charge is ignited fairly close to the secondary chamber. The objective of the experimental work was to evaluate the effect of different fuel and design parameters on the start-up emissions, using experimental design which enables a direct comparison between different parameters, using three levels of preheating of secondary air, electric preheating of primary air, different moisture and size of the start wood as well as different amounts of birch bark, which was used to spread the fire during the start. The boiler did not use a bypass damper and the full fuel charge was added before igniting the start wood through an ignition door situated slightly above the grate.  The only significant results for the four parameters were that smaller and drier start wood gave lower start-up emissions. Extra amount of birch bark gave the same result. The most important parameters are the fuel parameters, which mean that the result is generally applicable.

Place, publisher, year, edition, pages
Jyväskylä: FINBIO - The Bioenergy Association of Finland , 2009. 525-533 p.
Suomen bioenergiayhdistyksen julkaisuja, ISSN 1239-4874
Research subject
Energy Engineering
URN: urn:nbn:se:ltu:diva-38940Local ID: d8107210-a122-11de-8293-000ea68e967bISBN: 978-952-5135-44-2 (print)OAI: diva2:1012447
International Bioenergy Conference : 31/08/2009 - 04/09/2009
Godkänd; 2009; 20090914 (esbpet)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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Pettersson, Esbjörn
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