Radiative enhancement of heat transfer to a gray gas through particle seeding

Journal Article · Thu Jun 01 00:00:00 EDT 1995 · Numerical Heat Transfer. Part A, Applications

DOI:https://doi.org/10.1080/10407789508913725· OSTI ID:78249

Jones, P D ^[1]; Bayazitoglu, Y ^[2]

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1. Auburn Univ., AL (United States). Mechanical Engineering Dept.
2. Rice Univ., Houston, TX (United States). Mechanical Engineering and Materials Science Dept.

Combined effects of radiation and convection are examined in turbulent flow of gray gases, dispersely seeded with absorbing, emitting, scattering particles. Seeding particles are used as a heat transfer enhancement technique, whereby radiatively participating particles receive radiation from hot tube walls, and transfer this heat to the gas. It is found that enhanced heating of the gas is only achieved for low gas optical thicknesses and when the seeding particles are small and either hollow or of low material density. Enhancements are identified for both radiation-dominated and combined mode (radiation/convection) cases, as functions of dimensionless parameters.

• Sponsoring Organization: USDOE
• OSTI ID: 78249
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 6 Vol. 27; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
AUGMENTATION
GASES
HEAT TRANSFER
PARTICULATES
RADIANT HEAT TRANSFER
TURBULENT FLOW