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Author:

Wang, Zhenzhen (Wang, Zhenzhen.) | Kamimoto, Takahiro (Kamimoto, Takahiro.) | Deguchi, Yoshihiro (Deguchi, Yoshihiro.) | Zhou, Wangzheng (Zhou, Wangzheng.) | Yan, Junjie (Yan, Junjie.) | Tainaka, Kazuki (Tainaka, Kazuki.) | Tanno, Kenji (Tanno, Kenji.) | Watanabe, Hiroaki (Watanabe, Hiroaki.) | Kurose, Ryoichi (Kurose, Ryoichi.)

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Abstract:

Two dimensional temperature and concentration distributions are important parameters for pulverized coal combustion used for power plant to understand the combustion field and develop the high efficient combustion technologies. However, it is difficult to measure two dimensional temperature and concentration in pulverized coal combustion field using conventional measurement technologies because pulverized coal combustion produces lots of dust and strong emission from its flame. This paper focused on the application of two dimensional temperature measurement method based on the combination of computed tomography and tunable diode laser absorption spectroscopy using absorption spectra of water vapor at 1388 nm and 1343 nm for each laser scanning using direct absorption spectroscopy, which show the better characteristics of spatial-temporal resolution, fast response, high sensitivity, self-calibration and optical accessibility. Accuracy of temperature measurement using tunable diode laser absorption spectroscopy was improved by applying the corrected spectroscopic database. Computed tomography reconstruction accuracy of 16 laser-paths configuration was evaluated using sum of squared difference (0.001) and zero-mean normalized cross-correlation (over 0.991), which presented the consistent temperature between assumed and reconstructed distributions. This developed computed tomography-tunable diode laser absorption spectroscopy was successfully applied to pulverized coal flame for two dimensional temperature measurement with 1 ms temporal resolution for time-series two dimensional temperature measurement in the range of 300–2500 K. The rationality was demonstrated by comparison of pulverized coal flame and Methane-Air flame temperature distributions due to the main heat release produced by methane fuel. Its applicability to pulverized coal combustion field will be benefit for optimal operation control and combustion efficiency improvement by combustion organization or new design of combustion system. © 2020 Elsevier Ltd

Keyword:

Absorption spectroscopy Coal Coal combustion Coal dust Computerized tomography Diodes Fossil fuel power plants Image reconstruction Methane Power plants Pulverized fuel Semiconductor lasers Temperature distribution Temperature measurement Two dimensional Water absorption

Author Community:

  • [ 1 ] [Wang, Zhenzhen]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; Graduate School of Advanced Technology and Science, Tokushima University, Tokushima; 770-8501, Japan
  • [ 2 ] [Kamimoto, Takahiro]Graduate School of Advanced Technology and Science, Tokushima University, Tokushima; 770-8501, Japan
  • [ 3 ] [Deguchi, Yoshihiro]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; Graduate School of Advanced Technology and Science, Tokushima University, Tokushima; 770-8501, Japan
  • [ 4 ] [Zhou, Wangzheng]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China
  • [ 5 ] [Yan, Junjie]State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an; 710049, China; Graduate School of Advanced Technology and Science, Tokushima University, Tokushima; 770-8501, Japan
  • [ 6 ] [Tainaka, Kazuki]Central Research Institute of Electric Power Industry, Kanagawa; 240-0196, Japan
  • [ 7 ] [Tanno, Kenji]Central Research Institute of Electric Power Industry, Kanagawa; 240-0196, Japan
  • [ 8 ] [Watanabe, Hiroaki]Kyushu University, Fukuoka; 819-0395, Japan
  • [ 9 ] [Kurose, Ryoichi]Kyoto University, Kyoto; 615-8540, Japan

Reprint Author's Address:

  • [Deguchi, Yoshihiro]Tokushima Univ, Grad Sch Adv Technol & Sci, 2-1 Minamijyosanjima, Tokushima 7708501, Japan;;

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Source :

Applied Thermal Engineering

ISSN: 1359-4311

Year: 2020

Volume: 171

5 . 2 9 5

JCR@2020

5 . 2 9 5

JCR@2020

ESI Discipline: ENGINEERING;

ESI HC Threshold:59

JCR Journal Grade:2

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 26

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 12

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