Skip to main content
SpringerLink
Log in

Experimental and theoretical study on the radiation of gases containing dust particles

Experimentelle und theoretische Untersuchungen des Strahlverhaltens staubbeladener Gasschichten

  • Published:
Wärme - und Stoffübertragung Aims and scope Submit manuscript

Abstract

The attenuation of thermal radiation within a dilute cloud of pulverised coal and ash is investigated experimentally and theoretically, for different ranges of particle size. An empirical expression is developed for obtaining the absorptivity and emissivity of a coal/ash cloud. A new nomogram is also presented on the basis of this expression.

Zusammenfassung

Es wird die Abschwächung thermischer Strahlung in einer verdünnten Wolke aus pulverisierter Kohle und Asche experimentell und theoretisch für verschiedene Bereiche der Partikelgröße untersucht. Zur Bestimmung des Absorptions- und Emissionsvermögens einer Kohle/Asche-Wolke wird ein empirisch gefundener Ausdruck entwickelt, der außerdem Grundlage eines neuen Nomogramms ist.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Abbreviations

A :

specific projected area for particle cloud

a :

absorptivity of dusty cloud or absorption coefficient

B :

dust burden

b :

exponential constant

b v :

peak factor of the magnetic fluctuation

C 3 :

Wien's constant

c v :

peak factor of the electrical fluctuation

D p :

dust factor

d :

diameter of the particles (d=2r)

f v :

solid volume fraction

I :

intensity

i :

√−1

K :

extinction coefficient

k :

total attenuation efficiency

L :

total length of optical path

M 1 :

proportionality constant, Eq. (8)

M 2 :

proportionality constant, Eq. (9)

m :

complex refractive index

n :

index of refraction

N :

number of particles in volumeV

p :

size parameter =πd/λ

Q :

efficiency

r :

particle radius

S :

position vector

T :

radiation source temperature

V :

air volume flow

θ :

polar angle

χ :

index of absorption

λ :

wavelength of incident radiation

ν :

frequency of incident radiation

ϱ :

density of solid material

σ :

scattering coefficient

Φ :

scattering phase function

ω :

solid angle

a :

absorption

b :

blackbody

d :

diffraction

e :

extinction

ref:

reflection

s :

scattering

t :

transmission

λ :

wavelength

References

  1. Blokh, A. G.: The basis of heat exchange by radiation. Energiz Moscow, 1962

  2. Blokh, A. G.: Radiation of a luminous sooty flame. Teploenergetika, (1964) 11, 26–30

    Google Scholar 

  3. Blokh, A. G.: Radiation of carbon particles in a flame, Teploenergetika, 11, No. 7, 16–19

  4. Biermann, P.; Vortmeyer, D.: Radiation of gases containing dust particles. Wärme-Stoffübertrag 2 (1969) 193–202

    Google Scholar 

  5. Buckius, R. O.; Hwang, D. C.: Radiation properties for polydispersions: application to coal. Journal of Heat Transfer 102 (1980) 99–103

    Google Scholar 

  6. Berne, B. J.; Pecora R.: Dynamic light scattering, 1976, New York: J. Wiley

    Google Scholar 

  7. Diermendjian, D.: Electromagnetic scattering of spherical poly-dispersions. New York: American Elsevier Publishing 1969

    Google Scholar 

  8. Grosshandler, W. L.; Monteiro, S. L. P.: Attenuation of thermal radiation by pulverized Coal and Char. J. Heat Transfer. 104 (1982) 587–593

    Google Scholar 

  9. Hottel, H. C.; Sarofim, A. F.: Radiative transfer. 1967. New York: McGraw-Hill

    Google Scholar 

  10. Howell, J. R.: Thermal radiation in participating media: The past, the present and some possible futures. J. Heat Transfer 110 (1988) 1220–1229

    Google Scholar 

  11. Kutateladze S. S.: Fundamentals of heat transfer, 1963. Edward Arnold (Publishers) Ltd. London

    Google Scholar 

  12. Foster, P. J.; Howarth, C. R.: Optical constants of carbons and coals in the infrared. Carbon 6 (1968) 719–729

    Google Scholar 

  13. Kumar, S.; Tien, C. L.: Dependent absorption and extinction of radiation by small particles. J. Heat Transfer 112 (1990) 178–185

    Google Scholar 

  14. Mackowski, D. W.; Altenkirch, R. A.; Menguc, M. P.: A comparison of electromagnetic wave and radiative transfer equation analyses of a coal particle surrounded by a soot cloud. Combustion Flame 76 (1989) 415–420

    Google Scholar 

  15. Ozisik, M. N.: Radiative Transfer and Interactions with conduction and convection, 1973. New York: John Wiley

    Google Scholar 

  16. Siegel, R.; Howell, J. R.: Thermal radiation heat transfer (1981) New York: Hemisphere

    Google Scholar 

  17. Stull, V. R.; Plass, G. N.: Emissivity of dispersed carbon particles. J Optical Society America (1960) 50, 121–129

    Google Scholar 

  18. Stasiek, J.: Determination of extinction factors and scattering cross section in a diffuse medium: air-coal dust under flow conditions. Flow visualization III Ed. by W. J. Yang. 1985, 808–812, New York: Hemisphere

    Google Scholar 

  19. Stasiek, J.; Collins, M. W.: Radiant and convective heat transfer for flow of an optically active gas in a cooled tube with a grey wall. I. H. T. C. 9, 1990, Jerusalem, Israel

  20. Tien, C. L.: Thermal radiation in packed and fluidized beds. J. of Heat transfer 110 (1988) 1230–1242

    Google Scholar 

  21. Van de Hulst, H. C.: Light scattering by small particles, 1957, J. Wiley and Sons Inc. New York

    Google Scholar 

  22. Viskanta, R.; Ungan, A.; Menguc, M. P.: Predictions of radiative properties of pulverised coal and fly-ash polydispersions. 20th National Heat Transfer Conference. ASME paper No 81-HT-24, 1981, Milwaukee, USA

  23. Whitson, M. E.: Handbook of the infrared optical properties of Al2O3, MgO and ZrO2, Vol. I. AD/A-103 722, 1975, The Aerospace Corporation, El Sugundo, California

  24. Gray, W. A.; Kilham, J. K. and Müller, R.: Heat transfer from flames. Paul Elek (Scientific Books) Ltd., 1976

  25. Biermann P.: Dissertation, Stuttgart, 1968

  26. Sato, T.; Kunimoto, T.: Mem. Fac. Eng. Kyoto University, (1965) 27, 75–88

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Technical University of Gdansk, Gdansk, Poland

    J. A. Stasiek

  2. Thermo-Fluids Eng. Research Centre, City University, Northampton Square, EC1V OHB, London, England

    M. W. Collins

Authors
  1. J. A. Stasiek
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. W. Collins
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Stasiek, J.A., Collins, M.W. Experimental and theoretical study on the radiation of gases containing dust particles. Warme - Und Stoffubertragung 28, 185–193 (1993). https://doi.org/10.1007/BF01541189

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01541189

Keywords

Search

Navigation