BASIC STUDIES IN HEAT TRANSFER AND FLUID FLOW. Quarterly Progress Report IX-QPR-3-60 for period July 1, 1960 to September 30, 1960

Technical Report · Tue Oct 31 04:00:00 EST 1961

OSTI ID:4105427

Diskind, T; Lee, D; Lummis, R; Stein, R P; Vohr, J H

The resistance and temperature coefficients of "E.C." films (copper film covered with MgF/sub 2/ film) were measured. The third test section heater (heated portion of each test section consisted of a stainless-steel tube 0.295 in. OD x 0.025 in. wall x 10.5 in. long) was used to determine the critical heat flux density of the heater using the pulse heating technique at conditions of 0.4 ft/ sec water velocity, 170 ts F inlet temperature, and 17 psia. Burn- out occurred at a heat flux of 750,000 Btu/hr/sq ft. Sustained, but not stable, film boiling was achieved in a fourth test section heater using the pulse heating technique. A smooth vapor film was obtained momentarily at relatively low steadystate heat fluxes over a significant portion of the tube surface. In studies on boiling water flow patterns, difficulties are encountered in finding a satisfactory method of thermally insulating the back side of the heating strip to prevent boiling from occurring beneath the strip. (For preceding period see TID- 6035.) (C.J.G.)

• Research Organization: Columbia Univ., New York. Engineering Research Labs.
• NSA Number: NSA-15-008960
• OSTI ID: 4105427
• Report Number(s): TID-6765
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
BURNOUT
COATING
COPPER
ENGINEERING AND EQUIPMENT
FILMS
FLOW MODELS
FLUID FLOW
FRICTION
HEAT TRANSFER
HEATING
LABORATORY EQUIPMENT
MAGNESIUM FLUORIDES
MEASURED VALUES
PULSES
QUANTITATIVE ANALYSIS
STABILITY
STAINLESS STEELS
SURFACES
TEMPERATURE
THERMAL INSULATION
TUBES
VAPORS
VELOCITY
WATER