Measurement of temperature and emissivity of biomass candle flame using spectral thermometry

Zheng，Shu1; Li，Xinyu1; Cai，Weiguang1; Zhang，Jian1; Liu，Zirui2; Zhou，Bo3; Lu，Qiang1

2021-12-01

10.1016/j.ijleo.2021.168019

OPTIK   影响因子和分区

0030-4026

1618-1336

To develop in-situ temperature measurement technology for biomass combustion environment, rose and tea soybean candle flames were experimentally studied using spectral thermometry in this paper. The distributions of temperature and emissivity at different flame heights were calculated using four emissivity models, i.e., the Gray emissivity model, the Hottel and Broughton emissivity model, the polynomial approximation emissivity model and the Rayleigh approximation emissivity model. The results showed that the emissivity calculated by the polynomial approximation emissivity model was larger than that calculated by other models at the same flame height. The average temperature of rose soybean candle flame was 59 K larger than that of tea soybean candle flame. The temperature results were verified by the hyper-spectral imaging device and the polynomial approximation emissivity model performed the best. Normalized emissivity showed that the radiative property of the rose soybean candle flame was stronger than that of the tea soybean candle flame. Moreover, the alkali metal content in the tea soybean candle flame was higher than that in the rose soybean candle flame along the flame height.

Candle flame Emissivity Spectral thermometry Temperature measurement

EI ; SCI

英语

通讯

Stable Support Plan Program of Shenzhen Natural Science Fund Grant[20200925155430003] ; National Natural Science Foundation of China[51976057,51922040,51827808] ; Fundamental Research Funds for the Central Universities["2020JG005","2020DF01"] ; Foundation of State Key Laboratory of Coal Combustion[FSKLCCA2104] ; Hunan Science and Technology Planning Project[2020RC5008]

Optics

Optics

WOS:000728390600007

ELSEVIER GMBH

20213910953730

Alkali metals ; Combustion ; Electromagnetic wave emission ; Polynomial approximation ; Spectroscopy ; Thermometers

Alkali Metals:549.1 ; Electromagnetic Waves:711 ; Numerical Methods:921.6 ; Temperature Measuring Instruments:944.5 ; Temperature Measurements:944.6

PHYSICS

2-s2.0-85115767008

Scopus

1.National Engineering Laboratory for Biomass power Generation,North China Electric Power University,Beijing,102206,China
2.Department of Mechanical and Aerospace Engineering,Princeton University,Princeton,08544,United States
3.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zheng，Shu,Li，Xinyu,Cai，Weiguang,et al. Measurement of temperature and emissivity of biomass candle flame using spectral thermometry[J]. OPTIK,2021,247.

Zheng，Shu.,Li，Xinyu.,Cai，Weiguang.,Zhang，Jian.,Liu，Zirui.,...&Lu，Qiang.(2021).Measurement of temperature and emissivity of biomass candle flame using spectral thermometry.OPTIK,247.

Zheng，Shu,et al."Measurement of temperature and emissivity of biomass candle flame using spectral thermometry".OPTIK 247(2021).