Journal of the Japan Institute of Energy
New Arrival Alert : OFF

You can use this feature after you logged into the site.
Please click the button below.

Log in / Sign up
ONLINE ISSN: 1882-6121
PRINT ISSN: 0916-8753

Journal of the Japan Institute of Energy Vol. 86 (2007), No. 3

  • Spectroscopic Study on Luminous Counterflow Propane-Air Diffusion Flames: Measurement of Local Emissive Properties from Soot Cloud—1st Report: Non-Gray Body Feature of Luminous Flame & Its Applicability to Soot Diagnostics

    pp. 179-185

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.86.179

    Spectroscopic study on local radiative properties of luminous flame, i.e. emission from soot could, is performed by utilizing counterflow burner. By means of propane-air counterflow diffusion flames, measurements of one-dimensional (perpendicular to the flame surface) distributions of temperature and radiative quantities in the stationary flame are accomplished. Examined spectral range is in the visible and near-infrared regime (0.6 μm-1.0 μm). It turns out that bulk emissivity from the luminous flame, εLF, shows apparent wavelength dependency in the observed spectral range (εLFLF)), and its power-law constant, α, varies along the perpendicular to the flame surface. By taking the longer observed wavelength in the visible regime (eg., 0.9 μm), α closes to the constant irrespective of the observed location. By taking the shorter observed wavelength (eg., 0.7 μm), on the other hand, α tends to be monotonically decreased to the high temperature regime (α has inverse correlation to the flame temperature). This trend is somewhat similar to the particle diameter or volume fraction of the soot cloud according to the previous literatures. It is suggested that non-gray body feature of the luminous flame (i.e. wavelength dependency on bulk emissivity) is pronounced when the large soot fragments are coarsely distributed. Adopting the shorter wavelength may work for better diagnostics on local soot status.
    x

    Readers Who Read This Article Also Read

    1. Combustion Characteristics of Hydrogen in a Catalytic Fluidized Bed Journal of the Japan Institute of Energy Vol.86(2007), No.10
    2. Flame Characteristics in a Wick Combustion of GTL Kerosene Journal of the Japan Institute of Energy Vol.86(2007), No.10
    3. A Study on Evaluating Risk in CDM Journal of the Japan Institute of Energy Vol.86(2007), No.11
  • Spectroscopic Study on Luminous Counterflow Propane-Air Diffusion Flames: Measurement of Local Emissive Properties from Soot Cloud—2nd Report: Local Emissive Properties in C1-C4 Flames

    pp. 186-192

    Bookmark

    You can use this feature after you logged into the site.
    Please click the button below.

    Log in / Sign Up

    DOI:10.3775/jie.86.186

    Spectroscopic study on local radiative properties of luminous flame, i.e. emission from soot could, with various hydrocarbon fuels (methane, ethane, propane, butane) are performed by utilizing 1-D counterflow burner. Emission from soot from counterflow diffusion flames is analyzed and bulk emissivities of soot cloud by different kind of fuels are obtained. Model parameter of emissivity, α(εLFLF)): wavelength dependency to the bulk emissivity, is calculated in different locations. Various fuel types and imposed flow velocities are considered as experimental parameters in the present study. As the carbon number of the fuel is increased, the produced soot cloud tends to be optically thick and the wavelength dependency parameter, α, becomes smaller. This trend suggests that the luminous flames provided by high-carbon contained fuel is close to gray-body emitter. An engineering model parameter, ξ, is introduced for precise prediction of the universal local soot condition and it works fairly well in the wide range of the fuel (C1∼C4) under the conditions considered in the present study.
    x

    Readers Who Read This Article Also Read

    1. Combustion Characteristics of Hydrogen in a Catalytic Fluidized Bed Journal of the Japan Institute of Energy Vol.86(2007), No.10
    2. Flame Characteristics in a Wick Combustion of GTL Kerosene Journal of the Japan Institute of Energy Vol.86(2007), No.10
    3. A Study on Evaluating Risk in CDM Journal of the Japan Institute of Energy Vol.86(2007), No.11

Article Access Ranking

04 Aug. (Last 30 Days)

  1. Production and Technology of Iron and Steel in Japan during 2020 ISIJ International Vol.61(2021), No.6
  2. Perspective toward Long-term Global Goal for Carbon Dioxide Mitigation in Steel Industry Tetsu-to-Hagané Vol.105(2019), No.6
  3. Effect of Ore Type and Gangue Content on Carburization and Melting Behavior of Carbon-Iron Ore Composite ISIJ International Vol.61(2021), No.6
  4. Formation and Evolution of Inclusions in High Chromium Steel ISIJ International Advance Publication
  5. Viscosity of Na–Si–O–N–F Melts: Mixing Effect of Oxygen, Nitrogen, and Fluorine ISIJ International Vol.60(2020), No.12
  6. Carbon Enrichment of Austenite during Ferrite-bainite Transformation in Low-alloy-steel Tetsu-to-Hagané Advance Publication
  7. Opportunity and Challenges of Iron Powders for Metal Injection Molding ISIJ International Vol.61(2021), No.7
  8. Behavior of Jet from Nozzle Set on Side Wall of Lance ISIJ International Vol.61(2021), No.6
  9. Comprehensive Research about Critical Interaction Region Named Cohesive Zone in Series of Dissected Blast Furnaces ISIJ International Vol.61(2021), No.6
  10. Numerical Simulation and Fatigue Properties of Laser Spot Weld-Bonding DP590 Dual-Phase Steel Joints MATERIALS TRANSACTIONS Vol.62(2021), No.8

Search Phrase Ranking

04 Aug. (Last 30 Days)

  1. blast furnace
  2. blast furnace productivity
  3. nozzle clogging
  4. high hole expansion ratio
  5. 34crmo4
  6. 34crmo4 pressure vessel
  7. blast furnace permeability
  8. carburization
  9. frp cylinder using cr−mo steel liner for storing high pressure hydrogen gas
  10. gas carburization