Date of Award
12-1992
Document Type
Thesis
Degree Name
Master of Science
Department
Department of Engineering Physics
First Advisor
Ronald Tuttle, PhD
Abstract
Total hemispherical emittance was measured for the SP-100 reactor fuel cladding alloy (Nb-l% Zr). Based on a standard test method (ASTM C 835-82), experiments were conducted on a reference sample of oxidized stainless steel and then on a sample of actual cladding. The sample is heated in a vacuum by passing DC current through it until reaching equilibrium. Measurements are made of the electrical power dissipated in the sample and of the surface temperature. Using the Stefan-Boltzmann Law and some key assumptions concerning conductive and radiative heat transfer, the measured quantities are used to calculate emittance. Calculated values for unoxidized cladding range from 0.159 ± 5.35% at 913 K to 0.200 ± 4.51% at 1091 K. Highest value measured after onset of visible oxidation was 0.339 ± 3.92% at 1269 K.
AFIT Designator
AFIT-GNE-ENP-92D-1
DTIC Accession Number
ADA270456
Recommended Citation
Thomason, John E. III, "Total Hemispherical Emittance of Niobium-1% Zirconium Fuel Cladding for the SP-100 Space Reactor" (1992). Theses and Dissertations. 7195.
https://scholar.afit.edu/etd/7195
Comments
The author's Vita page is omitted.