Emissivity Characteristics of Hydrocarbon Flame and Temperature Measurement by Color Image Processing

Junyi Lin, Xiangyu Zhang, Kaiyun Liu and Wenjie Zhang
Additional contact information
Junyi Lin: College of humanities, Xiamen University, Xiamen 361005, China
Xiangyu Zhang: Xi’an Thermal Power Research Institute Co., Ltd, Xi’an 710032, China
Kaiyun Liu: College of humanities, Xiamen University, Xiamen 361005, China
Wenjie Zhang: College of humanities, Xiamen University, Xiamen 361005, China

Energies, 2019, vol. 12, issue 11, 1-14

Abstract: Non-gray radiation should be considered in the temperature and emissivity measurements of hydrocarbon flames. In this paper an improved ratio pyrometry by spectral analysis and color image processing is proposed. A Newton-type iterative method is utilized to analyze the spectrometer signals for the detection of monochromatic emissivity, and then the ratio pyrometry based on color image processing is corrected by the detected monochromatic emissivity without making approximations of the filter profiles of CCD camera. The experiments were conducted on a tubular heating furnace with coal gas and a propane flame. The spectral and spatial distributions of emissivity of hydrocarbon flame were detected, and the temperature measurement results at four conditions coincided with the thermocouple with relative errors less than 8.34%. The soot volume fractions in the turbulent diffusion hydrocarbon flame were approximately estimated from the detected emissivity, and are influenced by the O/C in the combustion. This study will provide a simple and effective method for the detection of non-gray radiation of hydrocarbon flames in the combustion industry.

Keywords: hydrocarbon flame; temperature; emissivity; spectral analysis; color image processing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/12/11/2185/pdf (application/pdf)
https://www.mdpi.com/1996-1073/12/11/2185/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:12:y:2019:i:11:p:2185-:d:238176

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().