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INVESTIGATION OF LIQUID METAL BOILING HEAT TRANSFER. Quarterly Progress Report No. 3

Technical Report ·
OSTI ID:4722391
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Design of the experimental apparatus was completed and construction initiated in several programs. Potassium will be boiled from the outside of a 3/ 8-in. OD Haynes-25 tube at temperatures up to 2000 un. Concent 85% F and heat fluxes of 10/sup 6/ Btu/hr ft/sup 2/. Equipment is under construction. Film- boiling studies employing potassium as the test fluid and sodium as the heating fluid will be conducted. Boiling will occur from a 0.200-inch Nb-1% Zr disk in a 1-inch Nb-1% Zr tube. A forced-circulation liquid metal loop is being constructed. The facility will circulate potassium at liquid flow rates up to 2 gpm. The maximum fluid temperature in the loop will be 1800 un. Concent 85% F. Potassium will be preheated to various qualities uslng clamshell heaters. Condensing sodium is used to boil the potassium in the test section. Fluxes of up to 10/sup 6/ Btu/hr ft/sup 2/ are anticipated. Two phase flow studies will be conducted as a part of the forced circulation investigation. Pressure drop and void fraction measurements will be made for different qualities and flow rates. This equipment is being assembled and tested. Loop instrumentation will be used in conjunction with the pool boiling studies. Agravic studies wlth mercury are scheduled. Studies will be from 1 to 20 g's with the liquid level varied to insure uniform pressures at liquid-vapor and liquid-solid interfaces. (auth)
Research Organization:
Michigan. Univ., ann Arbor. Coll. of Engineering
NSA Number:
NSA-17-020147
OSTI ID:
4722391
Report Number(s):
AD-282370; ORA-04526-5-P
Country of Publication:
United States
Language:
English

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Related Subjects

BOILING
CONFIGURATION
ENGINEERING AND EQUIPMENT
EVAPORATION
FILM BOILING
FILMS
FLUID FLOW
HEATING
LABORATORY EQUIPMENT
LIQUEFYING
LIQUID FLOW
LIQUID METALS
LIQUIDS
LOSSES
MEASURED VALUES
MERCURY