Robert Johansson

Projektledare at Department of Energy and Environment, Energy Technology

Robert Johansson mainly works with modelling of combustion and heat transfer. The work is focused on conversion of solid fuels and the research covers topics as; combustion of biomass in fixed beds, oxy-fuel combustion and gasfication of biomass. The aim with the work is to provide valuable input to support the scale-up new combustion processes and to assist in the evaluation of experimental data. Robert is also responsible for a course on energy conversion and has experience of teaching combustion engineering and energy technology.

Source: chalmers.se

Projects

2015–2017

Char conversion in indirect gasification in fluidised beds

Robert Johansson Department of Energy and Environment, Energy Technology
Louise Lundberg Department of Energy and Environment, Energy Technology
Anton Larsson Department of Energy and Environment, Energy Technology
Swedish Energy Agency

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Publications

2017

The role of fuel mixing on char conversion in a fluidized bed

Louise Lundberg, Antonio Soria-Verdugo, David Pallares et al
Powder Technology
Scientific journal article - peer reviewed
2016

Heat Transfer Conditions in a Rotary Kiln Test Furnace Using Coal, Biomass and co-firing Burners

Adrian Gunnarsson, Daniel Bäckström, Robert Johansson et al
Clearwater Clean Coal Conference, 2016.06.05-2016.06.09, Clearwater, Florida, USA
Conference paper - non peer reviewed
2016

Influence of Surrounding Conditions and Fuel Size on the Gasification Rate of Biomass Char in a Fluidized Bed

Louise Lundberg, Placid Tchoffor, David Pallares et al
Fuel processing technology. Vol. 144, p. 323-333
Scientific journal article - peer reviewed
2015

3D-modelling of the radiative heat transfer in a rotary kiln for iron ore pellets production

Adrian Gunnarsson, Robert Johansson, Klas Andersson et al
Nordic Flame Days, 2015.10.06-2015.10.07, Helsingör
Conference paper - non peer reviewed
2015

Modelling and measurements of radiation in a 400kWth rotary kiln test furnace

Adrian Gunnarsson, Daniel Bäckström, Robert Johansson et al
Industrial Furnaces and Boilers, 2015.04.07-2015.04.10, Porto Gaia, Portugal
Conference paper - non peer reviewed
2015

Treatment of radiative properties in combustion modelling

Robert Johansson,
Nordic Flame Days
Conference paper - non peer reviewed
2015

Determination of Kinetic Parameters for the Gasification of Biomass Char Using a Bubbling Fluidised Bed Reactor

Louise Lundberg, Placid Tchoffor, Robert Johansson et al
Proceedings of the 22nd International Conference on Fluidized Bed Conversion, p. 456-464
Conference paper - peer reviewed
2015

On the use of alternative fuels in rotary kiln burners - An experimental and modelling study of the effect on the radiative heat transfer conditions

Daniel Bäckström, Robert Johansson, Klas Andersson et al
Fuel Processing Technology. Vol. 138, p. 210-220
Scientific journal article - peer reviewed
2015

Particle composition and size distribution in coal flames - The influence on radiative heat transfer

Daniel Bäckström, Dan Gall, M. Pushp et al
Experimental Thermal and Fluid Science. Vol. 64, p. 70-80
Scientific journal article - peer reviewed
2014

A 1-dimensional model of indirect biomass gasification in a dual fluidised bed system

Louise Lundberg, David Pallares, Robert Johansson et al
11th International Conference on Fluidized Bed Technology, CFB 2014; Beijing; China; 14 May 2014 through 17 May 2014, p. 607-612
Conference paper - peer reviewed
2014

Comparative study of four alternative models for CO oxidation around a burning coal char particle

C. Gonzalo-Tirado, S. Jimenez, Robert Johansson et al
Combustion and Flame. Vol. 161 (4), p. 1085-1095
Scientific journal article - peer reviewed
2014

Measurement and Modeling of Particle Radiation in Coal Flames

Daniel Bäckström, Robert Johansson, Klas Andersson et al
Energy & Fuels. Vol. 28 (3), p. 2199–2210
Scientific journal article - peer reviewed
2013

Influence of particle and gas radiation in oxy-fuel combustion

Robert Johansson, Bo Leckner, Klas Andersson et al
International Journal of Heat and Mass Transfer. Vol. 65, p. 143-152
Scientific journal article - peer reviewed
2012

Influence of ash particles on radiative heat transfer in air- and oxy-fired conditions

Robert Johansson, Klas Andersson, Filip Johnsson et al
37th Clean Coal Conference, Clearwater Florida
Conference paper - non peer reviewed
2012

Gas temperature and radiative heat transfer in oxy-fuel flames

Daniel Bäckström, Robert Johansson, Klas Andersson et al
The 37th International Technical Conference on Clean Coal & Fuel Systems, Clearwater USA, 3-7/6-2012
Conference paper - non peer reviewed
2012

Computational Fluid Dynamics Modeling of Oxy-Fuel Flames: The Role of Soot and Gas Radiation

Stefan Hjärtstam, Robert Johansson, Klas Andersson et al
Energy & Fuels. Vol. 26 (5), p. 2786-2797
Scientific journal article - peer reviewed
2011

Thermal radiation in oxy-fuel flames

Klas Andersson, Robert Johansson, Filip Johnsson et al
International Journal of Greenhouse Gas Control. Vol. 5 (suppl. 1), p. S58-S65
Scientific journal article - peer reviewed
2011

THE INFLUENCE OF PARTICLE AND GASEOUS RADIATION IN OXY-FUEL COMBUSTION

Robert Johansson, Klas Andersson, Filip Johnsson et al
The 36th International Technical Conference on Clean Coal & Fuel Systems, Clearwater USA, 5-9/6 2011
Conference paper - non peer reviewed
2011

Account for variations in the H2O to CO2 molar ratio when modelling gaseous radiatve heat transfer with the weighted-sum-of-grey-gases model

Robert Johansson, Klas Andersson, Bo Leckner et al
Combustion and Flame. Vol. 158 (5), p. 893-901
Scientific journal article - peer reviewed
2010

Evaluation of gas radiation modeling in oxy-fired furnaces

Stefan Hjärtstam, Robert Johansson, Klas Andersson et al
Conference Proceedings; 2010 AIChE Annual Meeting, 10AIChE; Salt Lake City, UT; 7 November 2010 through 12 November 2010
Conference paper - peer reviewed
2010

Models for gaseous radiative heat transfer applied to oxy-fuel conditions in boilers

Robert Johansson, Klas Andersson, Bo Leckner et al
International Journal of Heat and Mass Transfer. Vol. 53 (1-3), p. 220-230
Scientific journal article - peer reviewed
2009

Modification of the weighted-sum-of-grey-gases model to account for both air- and oxy-fired conditions

Robert Johansson, Klas Andersson,
1st Oxyfuel Combustion Conference, 8-11 September
Conference paper - non peer reviewed
2009

Account for ratios of H2O to CO2 in the calculation of thermal radiation of gases with the weighted-sum-of-grey-gases model

Robert Johansson, Bo Leckner, Klas Andersson et al
Sixth Mediterranean Combustion Symposium, 7-11 June, Proceedings CD
Conference paper - peer reviewed
2008

Radiation measurements and modeling of lignite-fired oxy-fuel flames

Klas Andersson, Robert Johansson, Bo Leckner et al
Scandinavian-Nordic Section of the Combustion Institute – Measuring techniques in Combustion, October 23-24, 2008
Conference paper - non peer reviewed
2008

Evaluation of gas radiation modelling in oxy-fired furn

Robert Johansson, Klas Andersson, Bo Leckner et al
3rd IEA-GHG Oxyfuel Workshop, Yokohama (Japan), 4-6 March 2008
Conference paper - non peer reviewed
2008

Radiation intensity of lignite-fired oxy-fuel flames

Klas Andersson, Robert Johansson, Filip Johnsson et al
Experimental Thermal and Fluid Science. Vol. 33 (1), p. 67-76
Scientific journal article - peer reviewed
2008

Radiation Intensity of Propane-Fired Oxy-Fuel Flames: Implications for Soot Formation

Klas Andersson, Robert Johansson, Filip Johnsson et al
Energy & Fuels. Vol. 22 (3), p. 1535-1541
Scientific journal article - peer reviewed
2007

Radiative heat transfer in oxy-fuel flames for solid and gaseous fuels

Klas Andersson, Robert Johansson, Filip Johnsson et al
AFRC-JFRC conference, Hawaii, 2007
Conference paper - non peer reviewed
2007

Sensitivity Analysis of a Fixed Bed Combustion Model

Robert Johansson, Henrik Thunman, Bo Leckner et al
Energy & Fuels. Vol. 21 (3), p. 1493-1503
Scientific journal article - peer reviewed
2007

Influence of intraparticle gradients in modeling of fixed bed combustion

Robert Johansson, Henrik Thunman, Bo Leckner et al
Combustion and Flame. Vol. 149, p. 49-62
Scientific journal article - peer reviewed
2006

A model for simulation of fixed bed combustion

Robert Johansson, Henrik Thunman, Bo Leckner et al
Report
2006

Influence of intra-particle gradients in modelling of fixed bed combustion

Robert Johansson, Henrik Thunman, Bo Leckner et al
Thirty-first international symposium on combustion
Conference poster
2006

Modelling of biofuel combustion in fixed beds

Robert Johansson,
Licentiate thesis
2005

BiofuelGS Annual Report 2005

Henrik Thunman, Bo Leckner, Federico Ghirelli et al
Report
2005

Limitations of the porous medium approximation in modelling of fixed bed combustion

Robert Johansson, Henrik Thunman, Bo Leckner et al
Swedish - Finnish flamedays 2005
Conference paper - non peer reviewed
2004

BiofuelGS annual report

Henrik Thunman, Bo Leckner, Federico Ghirelli et al
Report