Effective absorption coefficient of a selective medium within a finite spectral range with regard for scattering

German, M. L.; Лемперт, Д. Б.; Nekrasov, V. P.; Nogotov, E. F.; Rozin, S. G.

doi:10.1007/bf02699277

J Eng Phys Thermophys

1999

DOI: 10.1007/bf02699277

|View full text |Cite

Effective absorption coefficient of a selective medium within a finite spectral range with regard for scattering

M. L. German¹,

Д. Б. Лемперт²,

V. P. Nekrasov³

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2005

Publication Types

Select...

Article1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In [11][12][13], computational formulas for determination of the effective spectral-absorption coefficient of molecular gases in a finite spectral interval with allowance for scattering are given, and the results obtained from the formulas derived are compared to the data of other authors and to experiment. The dependences obtained are based on the Elsasser model of an absorption band, a detailed integration of the radiation flux along the contour of the absorption line, and mathematical processing of the results.…”

mentioning

confidence: 99%

Calculation of the Characteristics of Transfer of Thermal Radiation in the Workspace of an Annular Furnace

Тимошпольский

German

Гринчук

et al. 2005

J Eng Phys Thermophys

Self Cite

View full text Add to dashboard Cite

A study has been made of the distinctive features of radiation transfer in the workspace of an annular furnace and the accuracy of calculation of radiation fluxes incident on the furnace walls in operation of the annular furnace and on the surface of cylindrical and rectangular metallic billets worked. The possibility of reducing the dimension of the problem on calculation of thermal-radiation fluxes from a three-dimensional problem to a two-dimensional one has been substantiated. The influence of the selectivity of the radiation of flue gases and the emissivity factor of refractory furnace surfaces on the integral radiation-flux densities has been considered.Annular furnaces with a moving hearth are widely used for heating of billets worked on rolling mills [1]. In these furnaces, billets lying immovably on the rotary hearth traverse, together with it, the continuous, welding, and soaking zones. A billet must be heated to the necessary temperature in one complete rotation of the hearth. The billets are charged and discharged using special machines. The annular hearth of the furnace moves by jerks, rotating by an angle corresponding to the distance between two neighboring billets in each jerk. The rotational velocity of the hearth may change with the size of the billet heated. Special sand or water seals are manufactured to avoid the suction of cold air into the workspace between the furnace walls and the rotary hearth. The general view of an annular furnace is presented in Fig. 1.Annular furnaces may burn both gaseous and liquid fuels. Burners are installed on both the exterior and interior furnace walls. Arch heating of annular-hearth furnaces is finding increasing use. The combustion products are extracted at one or more sites. The arrangement of burners and fume offtakes is one of the most important characteristics of annular-hearth furnaces, depending on which a furnace may operate according to the continuous or chamber regime. One uses flame burners when the arrangement is lateral, plane-flame burners in the case of arch heating, and low-pressure atomizers in fuel-oil heating. Annular-hearth furnaces are usually equipped with recuperators. The most important advantages of annular furnaces concern the possibility of diminishing substantially the overall dimensions of a furnace and of utilizing thermal energy more efficiently.The dimensions of furnaces depend on both their output and the form and size of the billets heated. The output of furnaces reaches 70 tons/h in individual cases; their diameter along the axial line of the hearth is 25-30 m and their width is 6 m or more. The height of a furnace is selected based on the optimum distance between the burners and the heated metal and the furnace arch. To avoid fusion of the metal lateral burners must be above it at a distance no smaller than 450-500 mm and approximately at the same distance from the arch. Billets are spaced 100-200 mm apart in the furnace. In the case of multirow stacking, the distance from the ends of the billets to the furnace walls must b...

show abstract

mentioning

confidence: 99%

Calculation of the Characteristics of Transfer of Thermal Radiation in the Workspace of an Annular Furnace

Тимошпольский

German

Гринчук

et al. 2005

J Eng Phys Thermophys

Self Cite

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Effective absorption coefficient of a selective medium within a finite spectral range with regard for scattering

Cited by 1 publication

References 11 publications

Calculation of the Characteristics of Transfer of Thermal Radiation in the Workspace of an Annular Furnace

Calculation of the Characteristics of Transfer of Thermal Radiation in the Workspace of an Annular Furnace

Contact Info

Product

Resources

About