NS SAVANNAH FUEL DEVELOPMENT PROGRAM. PRESSURE DROP THROUGH 25 ROD PARTIAL PROTOTYPE AT 520F AND 1100 PSI

Experimental pressure drop measurements with subcooled water were made on a 21 rod fuel bundle which is a partial prototype of the N.S. Savannah fuel bundle. The flow section consisted of 21 fuel rods and 4 dead rods, held together with upper and lower tie plates and a spacer at the middle. Tests included measurements at various flows of friction losses, pressure drop at the spacers, distance for spacer expansion recovery and pressure loss at the upper and lower tie plate. The results reveal that (1) experimental pressure loss across the channel mounting assembly is 30% greater than that calculated at a mass flow of 16 lb/sec; (2) losses due to the upper and lower tie plates are 50%-60% more than calculated; (3) pressure loss through a complicated spacer geometry can be calculated more accurately by the sum of the energy losses in several likely independent contractions and expansions through the spacer; (4) friction factions obtained for the channel and rods are 30% higher than would be obtained from a Moody diagram for a roughness of 100 microinches.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number GEAP-3174.
  • Corporate Authors:

    General Electric

    Marine Turbine & Gear Engineer, 1100 Western Ave
    Lynn, MA  USA  01910
  • Authors:
    • Polomik, E E
  • Publication Date: 1959-5-22

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 54 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026195
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: GEAP-3174
  • Contract Numbers: AT-(04-3)-189
  • Files: TRIS, USDOT
  • Created Date: Apr 13 1973 12:00AM