INVESTIGATION OF LIQUID METAL BOILING HEAT TRANSFER.

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Abstract:

Critical heat flux determinations with rubidium continued. Burnout results along with other liquid metal burnout data were correlated with a dimensionless relation. A film boiler yielded data over pressure range of 2 - 19mm mercury. The data falls slightly above the predictions of Berenson for potassium film boiling at a pressure of a 0.1 atm. Data obtained for which the surface temperature exceeded the saturation temperature by greater than 700F yielded reasonably consistent results when the flux was calculated by two independent procedures. At lower values of the surface temperature, unusual behavior was encountered which is probably related to transitional effects which began to occur on the wall of the vessel near the boiling plate. A forced circulation apparatus was operated to yield condensing coefficients for sodium over a temperature range of 1240F to 1525F and a range of heat fluxes from 215,000 to 583,000 BTUhr.Sq. ft.. The condensing coefficient was observed to be essentially constant over these ranges at a value of 10,800 3,300 BTUhr.sq. ft.F.

Author(s):
Balzhiser, Richard E. ; Caswell, Bruce F. ; Padilla, Andrew, Jr. ; Barry, Robert E. ; Gahman, Robert L.
Author Organization(s):
MICHIGAN UNIV ANN ARBOR LIQUID METALS LAB
Descriptive Note:
Rept. for May-Aug 65,
Supplementary Note:
See also AD-606 826.
Annotation:
Liquid-metal boiling heat transfer.
Pagination:
0048

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
05750-23-P
Contract/Grant Number(s):
AF33 657 11548
Project Number(s):
ORA 05750
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*LIQUID METALS, HEAT TRANSFER), (*HEAT TRANSFER, LIQUID METALS), (*HEAT EXCHANGERS, LIQUID METAL COOLANTS), (*LIQUID METAL COOLANTS, HEAT TRANSFER), FILM BOILING, CONDENSATION, PRESSURE, TRANSITION TEMPERATURE, ALKALI METALS, SURFACE PROPERTIES, THERMAL CONDUCTIVITY, CESIUM, RUBIDIUM, SODIUM, POTASSIUM
Report Date:
1965 Aug 01