Determination of ingredient composition of atmospheric emissions of the turbojet engine combustion gases by the fine-structure spectroscopy

Москаленко, Н. И.; Мисбахов, Р. Ш.; Bagautdinov, I. Z.; Loktev, Nikolay; Dodov, I. R.

doi:10.3103/s106879981603020x

Cited by 6 publications

(6 citation statements)

References 9 publications

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“…The intensity of the spectral lines of combustion products S(T) is measured as follows [10]. The measured spectrum is decomposed into the contours of individual spectral lines by the method of differential moments [21][22][23][24]. Further, the profiles obtained in this way are restored to the influence of the instrumental function of the spectrometer.…”

Section: Determination Of Temperature and Ingredient Compositionmentioning

confidence: 99%

Application of high optical technologies to determine the temperature field, ingredient composition and microstructure of the dispersed phase of combustion products of energy fuels

2020

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Application of high optical technologies for determining the temperature field, ingredient composition and microstructure of the dispersed phase of combustion products of power fuels is considered. The temperature of the combustion products is determined by method of the self-reversal of spectral lines. To determine the ingredient composition, the methods of fine-structure spectroscopy are used, when the absorption spectra of flame radiation are measured with a high spectral resolution. Then the ingredients are identified by the position of the spectral lines, and their concentration – by the intensity of the spectral lines at a fixed temperature. The temperature field in the combustion chambers of power plants is reconstructed by the method of numerical simulation of radiation transfer in combustion products of an inhomogeneous radiation propagation medium. The obtained experimental data on optical characteristics are used to solve problems of radiation heat transfer in combustion chambers of power plants with multi-chamber furnaces. Prospects for the creation of high-temperature atlases of the parameters of spectral lines of the ingredients of the gas phase of combustion products and their application in promising developments of power plants and in rocket technology are considered.

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Section: Determination Of Temperature and Ingredient Compositionmentioning

confidence: 99%

Application of high optical technologies to determine the temperature field, ingredient composition and microstructure of the dispersed phase of combustion products of energy fuels

2020

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“…The main optically active components of the combustion products of hydrocarbon fuels are water vapor, carbon dioxide, OH, CO, nitrogen oxides NO, NO 2 , the dispersed phase of combustion products, which is particles of soot and the mineral fraction of the burnt fuel. For the gas components of combustion products, the spectral transmission functions are calculated by the two-parameter method of equivalent masses [1][2][3], which makes it possible to solve the problems of radiation heat transfer in structurally inhomogeneous media. The spectral transmission functions…”

Section: Parameterization Of Radiation Characteristicsmentioning

confidence: 99%

“…When performing calculations of radiation heat transfer, a wide range of experimental studies was used, carried out on flame measuring complexes in the temperature range of 1500-2500 K and heated measuring complexes with electric heating [1][2][3][4][5][6][7][8][9][10]. As a result of these studies, the influence of non-equilibrium processes on radiation heat transfer was revealed [1][2][3], the radiation characteristics of water vapor in the spectral region 0.2-25 μm [11] were investigated, the spectral transmission functions and parameters of spectral lines were determined, and high-temperature atlases of the parameters of spectral lines of CO 2 were prepared [12]. The environmental impact of atmospheric anthropogenic emissions is considered in [13- 16,18].…”

Section: Parameterization Of Radiation Characteristicsmentioning

confidence: 99%

Numerical modeling of radiation heat exchange in combustion chambers and heat exchangers of power installations

2020

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The application of numerical modeling is considered to solve the problems of radiation heat exchange in structurally inhomogeneous two-phase media which are realized during the combustion of fuel in boiler units atmospheric emissions from air carriers when they move at supersonic speeds. The optically active ingredients of the gas phase of the combustion products have a sharp selection of spectral absorption lines (radiation) which causes a difference in the spectral transmission functions for selective radiation from the spectral transmission functions for non-selective radiation (gray body). In the presence of a dispersed phase of the combustion products acute selection is subjected to such a parameter of the radiation propagation medium as the probability of quantum survival. The number of spectral lines determining the spectral transmission functions increases with temperature and is determined by hundreds of thousands of lines at high temperatures. In this paper we consider a closed simulation of radiation heat transfer in combustion chambers when the temperature field in the combustion chambers is calculated first and then the flux of thermal radiation to the tube heat-receiving surfaces.

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“…The spectral calibration of the upgraded IKS-31 spectrometer was performed according to the position of the centers of the spectral lines SO2, NO2, water vapor H2O, CO, HCl. The length of the optical path in the MPC is 2, 4, 6, ..., 30 m. The analytical laboratory was tested when measuring the composition of the combustion products of automotive fuel, pine timber combustion products in model fire tests in combustion chambers [3][4][5], in fullscale fire tests of a fragment of the PLASTBAU building [6]. In the latter case, the measurements were performed during the entire fire period with full control of the temperature field reconstructed from thermocouple readings, at sampling points and in the vicinity of the firing experiment.…”

Section: Measuring Complex For Examination Of Composition Of Anthropomentioning

confidence: 99%

Measuring complex for examination the combustion products’ composition and the soot particulate sol microstructure

et al. 2019

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A measuring complex of spectral instrumentation for examination of the ingredient composition, optical characteristics and microstructure of the dispersed phase of the combustion products of energy fuels and atmospheric anthropogenic emissions is discussed. The measuring complex includes a multi-pass cell with external and internal electric heating, which makes it possible to change the temperature of the radiation propagation medium in a multi-pass cell in the temperature range of 300-800 K, in the pressure range of 1*10 2 ≤ P ≤ 3*10 6 Pa with optical path L = 2, 4, 6, ... 30 m. Registration of spectra is performed by an upgraded spectrometer IKS-31 with interchangeable sources and radiation receivers, interchangeable diffraction gratings and cut-off light filters, interchangeable quartz windows, CaF2, LiF, MgF2, IKS-25, KRS-5, ensuring their operation in the spectral region of 0.2-100 μm with the spectral resolution limit Δ = 0.2 cm -1 . The measuring complex has a complete metrological assurance. The obtained data on the spectral dependences of the effective cross sections for absorption, scattering, and attenuation of radiation are used to restore the microstructure of the dispersed phase of the combustion products. The atmospheric emissions of combustion products of wood, industrial energy, air carriers, decomposition products of asbestos-cement slabs during their calcinations were analyzed.

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Determination of ingredient composition of atmospheric emissions of the turbojet engine combustion gases by the fine-structure spectroscopy

Cited by 6 publications

References 9 publications

Application of high optical technologies to determine the temperature field, ingredient composition and microstructure of the dispersed phase of combustion products of energy fuels

Application of high optical technologies to determine the temperature field, ingredient composition and microstructure of the dispersed phase of combustion products of energy fuels

Numerical modeling of radiation heat exchange in combustion chambers and heat exchangers of power installations

Measuring complex for examination the combustion products’ composition and the soot particulate sol microstructure

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