RADIANT INTERCHANGE FACTORS FOR HEAT TRANSFER IN PARALLEL ROD ARRAYS

A heat transfer analysis of irradiated reactor fuel elements submerged in air requires consideration of radiant heat transfer. A method for calculating the interchange factors for radiant heat transfer within an array of parallel rods is described. Multiple diffuse reflections were considered between rods assumed to be infinitely long and of uniform emissivity. The factors were calculated with an IBM-7090 computer for emissivities ranging from 0.3 to 1.0; rod spacings of 1.1, 1.2, 1.3, 1.4, and 1.5 diameters were considered. Results have been tabulated for rectangular and triangular rod spacing. These should be applicable to rods at least 2 to 4 rows from the edge of the array. Interchange factors for determining radiant heat transfer between whole rows can be obtained by summing the appropriate values shown for individual rods.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number ORNL TM-583.
• Corporate Authors:

  Oak Ridge National Laboratory

  Reactor Projects Division
  Oak Ridge, TN  United States  37830

  UNION CARBIDE CORPORATION

  OAK RIDGE, TN  United States 
• Authors:
  • Klepper, O H
• Publication Date: 0

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Crashes; Design; Heat transfer; Mathematical methods; Mathematical models; Nuclear reactors
• Old TRIS Terms: Collision modeling; Nuclear reactor design
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00026606
• Record Type: Publication
• Source Agency: Maritime Administration
• Contract Numbers: W-7405-eng-26
• Files: TRIS, USDOT
• Created Date: Feb 14 1973 12:00AM