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Johansson, Andreas
Publications (8 of 8) Show all publications
Björk, H., Lindecrantz, K., Ericsson, D., Sarv, H., Bolton, K., Börjesson, A., . . . Skrifvars, M. (2009). 20 år med Institutionen Ingenjörshögskolan: historik, nuläge och framtid. Högskolan i Borås
Open this publication in new window or tab >>20 år med Institutionen Ingenjörshögskolan: historik, nuläge och framtid
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2009 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Högskolan i Borås, 2009
Series
Vetenskap för profession: rapport, ISSN 1654-6520 ; 10
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-4430 (URN)2320/5703 (Local ID)978-91-85659-49-4 (ISBN)2320/5703 (Archive number)2320/5703 (OAI)
Note

En jubileumsskrift

Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2017-11-09Bibliographically approved
Andersson, B.-Å. & Johansson, A. (2009). Förbränning och termiska system för hållbar utveckling. Vetenskap för profession (10), 79-81
Open this publication in new window or tab >>Förbränning och termiska system för hållbar utveckling
2009 (Swedish)In: Vetenskap för profession, ISSN 1654-6520, no 10, p. 79-81Article in journal (Other academic) Published
Place, publisher, year, edition, pages
Högskolan i Borås, 2009
Keywords
Energi och material
National Category
Materials Engineering
Identifiers
urn:nbn:se:hb:diva-2724 (URN)2320/5925 (Local ID)978-91-85659-49-4 (ISBN)2320/5925 (Archive number)2320/5925 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2018-01-16Bibliographically approved
Johansson, A. (2008). Siktning av avfall.
Open this publication in new window or tab >>Siktning av avfall
2008 (Swedish)Other (Other academic)
Keywords
siktning, förbehandling, avfallsförbränning, beläggningsbildning, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-5279 (URN)2320/3857 (Local ID)2320/3857 (Archive number)2320/3857 (OAI)
Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2017-11-16Bibliographically approved
Johansson, A. (2008). Waste refinery -joint initiatives towards improved energy recovery from waste. In: Proceedings of World Bioenergy, conference & Exhibition on Biomass for Energy, oral sessions.: . Paper presented at World Bioenergy conference & Exhibition on Biomass for Energy, Jönköping, May 27-29, 2008. (pp. 45-49).
Open this publication in new window or tab >>Waste refinery -joint initiatives towards improved energy recovery from waste
2008 (English)In: Proceedings of World Bioenergy, conference & Exhibition on Biomass for Energy, oral sessions., 2008, p. 45-49Conference paper, Published paper (Other academic)
Keywords
organic waste, combustion, biological conversion, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-2425 (URN)2320/3856 (Local ID)2320/3856 (Archive number)2320/3856 (OAI)
Conference
World Bioenergy conference & Exhibition on Biomass for Energy, Jönköping, May 27-29, 2008.
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2018-03-21Bibliographically approved
Johansson, A., Eskilsson, D., Johansson, L., Wikström-Blomqvist, E., Andersson, B.-Å. & Johnsson, A. (2007). Combustion of Demanding Waste Fractions in a 10 MWe Waste-toEnergy Plant. In: In Proceeding of ISWA/NVRD World Congress 2007: . Paper presented at ISWA/NVRD World Congress 2007.
Open this publication in new window or tab >>Combustion of Demanding Waste Fractions in a 10 MWe Waste-toEnergy Plant
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2007 (English)In: In Proceeding of ISWA/NVRD World Congress 2007, 2007Conference paper, Published paper (Other academic)
Keywords
waste combustion, fluifised bed, automative shredder residue, sewage sludge, deposits, gas composition, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-5759 (URN)2320/2915 (Local ID)2320/2915 (Archive number)2320/2915 (OAI)
Conference
ISWA/NVRD World Congress 2007
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-09-28Bibliographically approved
Johansson, A., Johnsson, F., Niklasson, F. & Åmand, L.-E. (2007). Dynamics of furnace process in a CFB boiler. Chemical Engineering Science, 62(1-2), 550-560
Open this publication in new window or tab >>Dynamics of furnace process in a CFB boiler
2007 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 62, no 1-2, p. 550-560Article in journal (Refereed) Published
Abstract [en]

With the aim of understanding the dynamics of combustion, this work examines simultaneous fluctuations in fluid dynamic parameters and gas composition measured in a CFB furnace operated with coal as a fuel. The fluid dynamic parameters investigated are pressure and air flow entering the furnace. Gas composition was recorded by a zirconia-cell probe and a gas suction probe connected to a mass spectrometer having a high time resolution (10 Hz). The principal fluctuations detected are around I Hz and below 0.3 Hz. The fluctuations below 0.3 Hz mostly originate from variations in the fuel-feed rate. These variations create periods of reducing conditions caused by a momentarily high fuel input accompanied by a pressure rise in the furnace and a reduction of the air feed, which occurs concurrent with the release of an enhanced quantity of volatiles. Modelled pressure fluctuations based on the relation between volatile release and pressure in the furnace give similar pressure fluctuations as the measured pressure fluctuations, with respect to amplitude and characteristic time scale of the fluctuations. There is also a correlation between reducing conditions and the concentration of hydrocarbons. (c) 2006 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
Elsevier, 2007
Keywords
circulating fluidised bed, combustion, gas composition, dynamics, hydrodynamics, fluidisation, fluidised bed, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-2279 (URN)10.1016/j.ces.2006.09.020 (DOI)2320/2913 (Local ID)2320/2913 (Archive number)2320/2913 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-03Bibliographically approved
Johansson, A., Blomqvist, E., Ekvall, A., Gustavsson, L., Tullin, C., Andersson, B.-Å., . . . Peters, G. (2007). Report: Waste Refinery in the Municipality of Borås. Waste Management & Research, 25(3), 296-300
Open this publication in new window or tab >>Report: Waste Refinery in the Municipality of Borås
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2007 (English)In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 25, no 3, p. 296-300Article in journal (Refereed) Published
Place, publisher, year, edition, pages
SAGE Publications, 2007
Keywords
waste treatment, biological treatment, incineration, Energi och material
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:hb:diva-2278 (URN)10.1177/0734242X07079186 (DOI)2320/2912 (Local ID)2320/2912 (Archive number)2320/2912 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-01Bibliographically approved
Johansson, A., Johnsson, F. & Leckner, B. (2007). Solids back-mixing in CFB boiler. Chemical Engineering Science, 62(1-2), 561-573
Open this publication in new window or tab >>Solids back-mixing in CFB boiler
2007 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 62, no 1-2, p. 561-573Article in journal (Refereed) Published
Abstract [en]

The furnaces of circulating fluidized bed (CFB) boilers have substantially lower height-to-width ratios than most of the laboratory CFB risers from which experimental investigations on riser fluid dynamics are published. Therefore, it is uncertain whether literature expressions for prediction of the distribution of solids and the thickness of the wall layers, derived from investigations in laboratory units, are applicable to boilers. In this work, data from laboratory units are compared with boiler data, and the accuracy of literature expressions for prediction of solids distribution, solids flow and wall layer thickness is reviewed. It is found that the height-to-width ratio does have a significant impact on the flow properties. Correlations based on experiments in laboratory units show poor agreement when applied to boilers. Modifications of literature expressions for prediction of solids flow and solids distribution are proposed, and an improved expression is formulated for prediction of the thickness of the wall layer.

Place, publisher, year, edition, pages
Elsevier, 2007
Keywords
circulating fluidised bed, scale-up, hydrodynamics, modelling, fluidisation, particle, wall layers, Energi och material
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:hb:diva-2280 (URN)10.1016/j.ces.2006.09.021 (DOI)2320/2914 (Local ID)2320/2914 (Archive number)2320/2914 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-01Bibliographically approved
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