Heat transfer in /sup 238/PuO/sub 2/ spheres [report]

R Kent, R Zocher
1976 unpublished
Price: Printed Copy $3.50 Microfiche $2.25 This report wa* prepared «K an account or work ftponiored bv the United Slate* Government. Neither the United Slain nor the United Nfahti Enorgy fcsran-h and Development Ad-miniNtrillion, nor any of their employees, nor any of their conlrnctor«. subranirHctom. or their employees, m»ikc« any wurrnniy. enprnts or implied, or assume* any leffal Hahility or responsihility for tho accuracy, completcnem. or UKerulneiH of ifoti t dt d i l d responsihility or
more » ... responsihility or tho accuracy, completcnem. or UKerulneiH o any information, apparatus, product, or procen diacloaed. o reprewepiM that H* UNO would not infrinxe privately owned ih ABSTRACT The effective thermal conductivity for spherical 23 *PuO 2 specimens (8O' ;Vi 23H Pu) has been calculated from steady-state measurements of the surface-to-core thermal gradients. The specimens had an average density of 80% TD and thermal inventories ranging from 50 to 100 J/s. The experiments were performed in both argon-water and helium atmospheres over the range 300 to 1500°C. The results indicate that helium, produced by the alpha decay of 238 Pu, significantly affects the heat transfer, especially at low temperatures. I.
doi:10.2172/7186482 fatcat:55t7fs33ffgg7fg7ewmcjfx4ri