Mid-wave IFTS measurements of a laboratory-scale laminar flame

Michael R. Rhoby; Kevin C. Gross

doi:10.1117/12.920651

9 May 2012 Mid-wave IFTS measurements of a laboratory-scale laminar flame

Michael R. Rhoby, Kevin C. Gross

Proceedings Volume 8390, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII; 83900E (2012) https://doi.org/10.1117/12.920651
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

A passive remote sensing technique for accurately monitoring the combustion efficiency (CE) of petrochemical flares is greatly desired. A Phase II DOE-funded SBIR lead by Spectral Sciences, Inc. is underway to develop such a method. This paper presents an overview of the current progress of the Air Force Institute of Technology's (AFIT) contribution to this effort. A Telops Hyper-Cam Mid-wave infrared (MWIR 1800-6667cm^-1 or 1.5-5.5μm) imaging Fourier-transform spectrometer (IFTS) is used to examine a laminar calibration flame produced by a Hencken burner. Ethylene fuel (C₂H₄) was burned at four different equivalency ratios Φ=0.80, 0.91, 1.0 and 1.25. This work focuses on the qualitative spectrally-resolved visualization of a Hencken burner flame and the spatial distribution of combustion by-products. A simple radiative transfer model is then developed and fit to a single-pixel spectrum. The flame spectra were characterized by structured emissions from CO₂, H₂O and CO. For the Φ = 0.91 flame, the spectrally-estimated temperature was T = 2172±28K at a height 10mm above the burner, a favorable result compared to OH-PLIF measurements (T = 2226±112K) made on an identical flame. H₂O and CO₂ mole fractions across the flame at the same height of 10 mmwere measured to be 13.7±0.6% and 15.5±0.8%, respectively.

Citation Download Citation

Michael R. Rhoby and Kevin C. Gross "Mid-wave IFTS measurements of a laboratory-scale laminar flame", Proc. SPIE 8390, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVIII, 83900E (9 May 2012); https://doi.org/10.1117/12.920651

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available