FORCED CONVECTION BOILING IN TUBES

Journal Article · Sat Mar 31 23:00:00 EST 1962 · Nuclear Sci. and Eng.

OSTI ID:4833671

Schrock, V E; Grossman, L M

Local heat transfer coefficients and pressure gradients were measured for bulk boiling of water in forced flow (vertically upward) in round tubes with internal diameters ranging from 0.1162 to 0.4317 in., lengths of 15to 40 in., heat fluxes of 6 x 10/sulp 4/ to 1.45 x 10/sup 6/ Btu/hr ft/sup 2/, mass fluxes of 49 to 911 lb/sec ft/sup 2/, exit qualities of 5 to 57%, and at pressures ranging from 42 to 505 psia. The local heat transfer coefficients expressed in the form of the Nusselt number were correlated in terms of Reynolds and Prandtl numbers and two dimensionless groups characterizing forced convection vaporization, the Lockhart-Martinelli parameter X/sub tt/, and the boiling number, Bo = (q/A)/Gh/sub fg/. For large values of the latter, nucleate boiling predominates and the dependence of the heat transfer on X/sub tt/ is small. Conversely, at the small values of Bo, convective flow effects are dominant, and there is a strong dependence on X/sub tt/ (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-16-017812
• OSTI ID: 4833671
• Journal Information: Nuclear Sci. and Eng., Journal Name: Nuclear Sci. and Eng. Vol. Vol: 12
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BOILING
CONFIGURATION
CONVECTION
EFFICIENCY
ENGINEERING AND EQUIPMENT
FLUID FLOW
FORCED CONVECTION
HEAT TRANSFER
HEATING
MASS
MEASURED VALUES
NUCLEATE BOILING
NUSSELT NUMBER
PRANDTL NUMBER
PRESSURE
REYNOLDS NUMBER
STANDARDS
TUBES
TURBULENCE
VELOCITY
WATER