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The main method for developing "ecologically clean" power engineering is to create and modernize technologies. The vortex furnace is one of the most promising technological solutions for the combustion of various fuels from gas to lowgrade coals with fewer harmful effluents. One and two-phase aerodynamics, and radiative heat transfer were numerically and experimentally studied in the vortex furnace. Aerodynamics is being modelled on the basis of three-dimension non-stationary Reynolds motion equations. To consider the effect of particles, these equations are being completed by a k-e turbulence equation.
    The calculation of radiative heat transfer is being made on the basis of modernized equations of the zonal method by means of Monte-Karlo determination of irradiance coefficients. The validity of calculations was checked by comparing them with thermoanemometer measurements at an air model of the vortex furnace. Radiative fluxes were also measured with the help of thermal divergators at full-scale setup. The developed set of programs can be considered as the basis for the modeling of furnace processes, and the optimization of the design of vapor-generators with vortex combustion.
    Calculation programs for transfer processes are being developed for other future ecologically safe technologies of solid fuel use, including furnaces with fluidized circulating beds. Water-coal suspensions (WCS) are a new kind of power fuel. They allow one to increase the ecological indexes of natural fuel combustion in power installations. Gasification of WSC is one of the main methods for the development of gas-vapor plants which use coal. Reologic properties of various WSCs were experimentally studied together with the thermophysical aspects of ignition, combustion, and the gasification of suspension drops. Physical-Chemical, aerodynamic, and heat conditions were taken into account. These experiments were carried out on the setup for the studying of single drop combustion with laser heating, with measurement of color temperature on a surface and thermocouple temperature inside a particle, and with gas analysis of reaction products. Different stages of the process are being investigated: heating, water evaporation, extraction and combustion of volatile, and combustion of coke residue. WCS combustion and gasification are being studied in a swirled fluidized circulating bed.
    Transfer processes were experimentally studied in centrifugal-bubbling systems with a wide range of technological applications. The hydrodynamics of swirled gas-liquid flows is being investigated. Aspects of the power strategy of Siberia are being developed. This strategy provides compensation for the depreciating installations by the technological modernization and reconstruction of the power engineering industry.

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The setup for studying the combustion of WCS drops.

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The scheme of the centrifugal-bubbling apparatus.

Combustion of a WCS drop.

Алексеенко С.В., Борисов В.И. и др.
Трехмерное численное и экспериментальное моделирование аэродинамики топочных камер // Теплофизика и аэромеханика. 1994. Т.1, С.347-354

Бурдуков А.П., Карпенко Е.И., Попов В.И. и др.
Экспериментальное исследование динамики горения капель водоугольных суспензий, Физика горения и взрыва, 1996, т. 32, № 4, С. 62-66.

Бушуев В.В.
Новая энергетическая политика России. М.:Энергоатомиздат, 1995. 511 с.

Burdukov A.P., Dorokhov A.R., Kazakov V.J.
Centrifugal-Bubbling Apparatus, Enhanced Heat Transfer, 1997, vol. 3, p. 1-16.

Keyno A.W., Krasinsky D.V., Salomatov V.V., Rychkov A.D.
Experimental and numerical modelling of the vortex furnace acrodynamics //  Russ. J. Eng. Thermophys., 1996, vol. 6, no. 1, p. 47-62.




© 2003 Institute of Thermophysics Sibirian Branch of Russian Academy of Sciences