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U.S. Department of Energy
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HEAT TRANSFER AND HYDRAULIC STUDIES FOR SNAP-4 FUEL ELEMENT GEOMETRIES. Topical Report No. 1

Technical Report ·
OSTI ID:4620067
Burnout, pressure drop, and heat transfer data are given for a closely spaced, wire wrapped 12-rod test section cooled by boiling water in vertical upflow at 1200 psia. The bundle consisted of (12) 0.440 in. OD rods, 17 in. long wrapped on a 6 in. pitch with 0.022 OD hypodermic needle tubing. The rods were arranged in 3 rows of 4 rods each forming a 60 deg parallelogram with a minimum spacing of 0.022 in. between adjacent rods and between the outer rods and the shroud walls. The ranges of variables studied were: mass velocities between 0.85 and 4.1 x 10/sup 8/ lb/hr-ft/sup 2/ exit qualities between 8 and 21% and instrumented burnout heat fluxes as high as 0.955 x 10/sup 6/ Btu/hr-ft/sup 2/. (auth)
Research Organization:
Columbia Univ., New York. Engineering Research Labs.
NSA Number:
NSA-17-040345
OSTI ID:
4620067
Report Number(s):
TID-19458
Country of Publication:
United States
Language:
English