Abstract
A model is proposed for the thermal-performance coefficient for a screen in a steam-generating boiler.
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Abbreviations
- ψ:
-
thermal performance coefficient of heating surface
- qincand qw.def :
-
radiation flux incident on wall and effective wall radiation flux, respectively
- I(τ, μ):
-
radiation intensity at τ in the direction θ=arc cos μ (angle of observation)
- τ:
-
optical thickness
- τo :
-
total optical thickness of layer
- x:
-
coordinate
- H :
-
absorptivity
- εw, rw, Tw :
-
emissivity, reflectivity, and temperature of surface, respectively
- B:
-
Planck radiation intensity at temperature T
- 1/ν=λ:
-
wavelength
- h, k, c, and σo :
-
constants
- Θ=λT:
-
reduced temperature [3]
- To :
-
gas (medium) temperature at wall
- ef:
-
effective
- res:
-
resultant
- w:
-
boundary surface (wall)
- inc.:
-
incident
- c:
-
layer center
Literature cited
V. V. Mitor, Heat Transfer in Steam Boiler Furnaces [in Russian], Mashgiz, Moscow-Leningrad (1963).
V. P. Trofimov and K. S. Adzerikho, “Calculation of the radiation flux in radiativeconvective heat transfer,” in: Convective Heat and Mass Transfer [in Russian], ITMO Akad. Nauk BSSR, Minsk (1979).
K. S. Adzerikho, A. G. Blokh, V. P. Trofimov, and F. D. Lozhechnik, “Determination of the effective temperature of a planar opaque medium with radiating and reflecting walls,” Teplofiz. Vys. Temp.,17, No. 3, 544–551 (1979).
V. P. Trofimov and K. S. Adzerikho, “Determination of the thermal-performance coefficient for surfaces bounding a planar layer of nonisothermal nonscattering medium,” Inzh.-Fiz. Zh.,39, No. 1, 102–108 (1980).
G. N. Abramovich, Applied Gas Dynamics [in Russian], Nauka, Moscow (1969).
V. V. Mitor, “Ash contamination of screened surfaces,” Energomashinostroenie, No. 7, 6–9 (1957).
V. V. Mitor, “Surface temperatures of contaminated smooth-tube screens,” Energomashinostroenie, No. 10, 6–9 (1957).
R. S. Prasolov, Mass and Heat Transfer in Boiler Devices [in Russian], Énergiya, Moscow (1964).
A. G. Blokh, Thermal Radiation in Boiler Systems [in Russian], Énergiya, Leningrad (1967).
N. V. Kuznetsov et al. (editors), Thermal Calculations on Boiler Systems (Standard Method) [in Russian], Énergiya, Moscow (1973).
T. B. Tiikma, “A laboratory study of the radiation parameters of ash deposits on heating surfaces in steam generators,” Candidate's Dissertation, Tallin Polytechnic Inst. (1977).
A. M. Gurvich and V. V. Mitor, “Thermal performance of radiative heating surfaces,” Energomashinostroenie, No. 2, 5–9 (1957).
V. N. Golovin, “A study of screen contamination in the TP-90 boiler,” Teploenergetika, No. 3, 23–28 (1964).
A. A. Ots, Processes in Steam Generators Burning Shales and Kan-Acha Coals [in Russian], Énergiya, Moscow (1977).
Thermal Calculations on Boiler Systems: Standard Method [in Russian], Gosenergoizdat, Moscow-Leningrad (1957).
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 40, No. 5, pp. 854–863, May, 1981.
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Blokh, A.G., Adzerikho, K.S. & Trofimov, V.P. Thermal-performance coefficient for a screen in a steam-generating boiler. Journal of Engineering Physics 40, 526–532 (1981). https://doi.org/10.1007/BF00822119
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DOI: https://doi.org/10.1007/BF00822119