Diode laser-based two-line atomic fluorescence (TLAF) thermometry applied to flames of combusting wood pellets is demonstrated. The temperature above burning wood pellets placed in the hot product gas of gallium seeded laminar flames is measured. The calibration-free technique provides spatially resolved temperatures in one dimension with sufficient temporal resolution to resolve all combustion stages of a pellet, even in highly sooting flames. The temperature above a burning pellet was found to decrease due to the release of volatile gases and the accuracy and precision of the technique is assessed at flame temperatures.
GustavssonL.BörjessonP.JohanssonB.SvenningssonP.“Reducing CO2 Emissions by Substituting Biomass for Fossil Fuels”. Energy. 1995. 20(11): 1097–1113.
2.
BruneD.E.LundquistT.J.BenemannJ.R.“Microalgal Biomass for Greenhouse Gas Reductions: Potential for Replacement of Fossil Fuels and Animal Feeds”. J. Environ. Eng. 2009. 135(1): 1136–1144.
3.
BasuP.ButlerJ.LeonM.A.“Biomass Co-Firing Options on the Emission Reduction and Electricity Generation Costs in Coal-Fired Power Plants”. Renewable Energy. 2011. 36(1): 282–288.
4.
MannM.SpathP.“A Life Cycle Assessment of Biomass Cofiring in a Coal-Fired Power Plant”. Clean Prod. Process. 2001. 3(2): 81–91.
5.
GoerndtM.E.AguilarF.X.SkogK.“Drivers of Biomass Co-Firing in U.S. Coal-Fired Power Plants”. Biomass Bioenergy. 2013. 58: 158–167.
6.
NunesL.J.R.MatiasJ.C.O.CatalãoJ.P.S.“Mixed Biomass Pellets for Thermal Energy Production: A Review of Combustion Models”. Appl. Energy. 2014. 127: 135–140.
7.
MirandaT.MonteroI.SepúlvedaF.J.ArranzJ.I.et al.“A Review of Pellets from Different Sources”. Materials. 2015. 8(4): 1413–1427.
8.
FatehiH.BaiX.-S.“A Comprehensive Mathematical Model for Biomass Combustion”. Combust. Sci. Technol. 2014. 186(4–5): 574–593.
9.
FatehiH.QuZ.SchmidtF.M.BaiX.-S.“Effect of Volatile Reactions on the Thermochemical Conversion of Biomass Particles”. Energy Procedia. 2017. 105: 4648–4654.
10.
BhuiyanA.A.NaserJ.“CFD Modelling of Co-Firing of Biomass with Coal Under Oxy-Fuel Combustion in a Large Scale Power Plant”. Fuel. 2015. 159: 150–168.
11.
JonesJ.M.PourkashanianM.WilliamsA.“Biomass Combustion Modelling”. Int. J. Ambient Energy. 2000. 21(3): 115–123.
12.
DebiagiP.E.A.GentileG.PelucchiM.FrassoldatiA.et al.“Detailed Kinetic Mechanism of Gas-Phase Reactions of Volatiles Released from Biomass Pyrolysis”. Biomass Bioenergy. 2016. 93: 60–71.
13.
WengW.GaoQ.WangZ.WhiddonR.et al.“Quantitative Measurement of Atomic Potassium in Plumes over Burning Solid Fuels Using Infrared-Diode Laser Spectroscopy”. Energy Fuels. 2017. 31(3): 2831–2837.
14.
QuZ.SchmidtF.M.“In Situ H2O and Temperature Detection Close to Burning Biomass Pellets Using Calibration-Free Wavelength Modulation Spectroscopy”. Appl. Phys. B. 2015. 119(1): 45–53.
15.
EngströmJ.NygrenJ.AldénM.KaminskiC.F.“Two-Line Atomic Fluorescence as a Temperature Probe for Highly Sooting Flames”. Opt. Lett. 2000. 25(19): 1469–1471.
16.
DecJ.E.KellerJ.O.“High Speed Thermometry Using Two-Line Atomic Fluorescence”. Proc. Combust. Inst. 1988. 21(1): 1737–1745.
17.
AlkemadeC.T.J.“A Theoretical Discussion on Some Aspects of Atomic Fluorescence Spectroscopy in Flames”. Pure Appl. Chem. 1970. 23(1): 73–98.
18.
BorggrenJ.WengW.HosseinniaA.BengtssonP.E.et al.“Diode Laser Based Thermometry Using Two-Line Atomic Fluorescence of Indium and Gallium”. Appl. Phys. B. 2017. 123: 278.
19.
A.C. Eckbreth. Laser Diagnostics for Combustion Temperature and Species. Amsterdam: Gordon and Breach Publishers, 1996.
20.
BurnsI.S.MercierX.WartelM.ChrystieR.S.M.et al.“A Method for Performing High Accuracy Temperature Measurements in Low-Pressure Sooting Flames Using Two-Line Atomic Fluorescence”. Proc. Combust. Inst. 2011. 33(1): 799–806.
21.
HultJ.BurnsI.S.KaminskiC.F.“Two-Line Atomic Fluorescence Flame Thermometry Using Diode Lasers”. Proc. Combust. Inst. 2005. 30(1): 1535–1543.
22.
ChrystieR.S.M.BurnsI.S.HultJ.KaminskiC.F.“High-Repetition-Rate Combustion Thermometry with Two-Line Atomic Fluorescence Excited by Diode Lasers”. Opt. Lett. 2009. 34(16): 2492–2494.
23.
HaraguchiH.SmithB.WeeksS.JohnsonD.J.et al.“Measurement of Small Volume Flame Temperatures by the Two-Line Atomic Fluorescence Method”. Appl. Spectrosc. 1977. 31(2): 156–163.
24.
WhiddonR.ZhouB.BorggrenJ.AldénM.et al.“Vapor Phase Tri-Methyl-Indium Seeding System Suitable for High Temperature Spectroscopy and Thermometry”. Rev. Sci. Instrum. 2015. 86(9): 093107.
25.
MaragòO.M.FazioB.GucciardiP.G.ArimondoE.“Atomic Gallium Laser Spectroscopy with Violet/Blue Diode Lasers”. Appl. Phys. B. 2003. 77(8): 809–815.
26.
WengW.BorggrenJ.LiB.AldénM.et al.“A Novel Multi-Jet Burner for Hot Flue Gases of Wide Range of Temperatures and Compositions for Optical Diagnostics of Solid Fuels Gasification/Combustion”. Rev. Sci. Instrum. 2017. 88(4): 045104.
27.
ChanQ.N.MedwellP.R.KaltP.A.M.AlwahabiZ.T.et al.“Solvent Effects on Two-Line Atomic Fluorescence of Indium”. Appl. Opt. 2010. 49(8): 1257–1266.
