Heat transfer with phase change in vertical upward, horizontal, and vertical downward tube flow

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Ind. Eng. Chem. Fundam.; (United States)

DOI:https://doi.org/10.1021/i100008a004· OSTI ID:6103876

Hughmark, G A

Heat transfer coefficients for boiling and condensation with the wall region as the liquid phase and with vapor velocity contributing significantly to the wall shear stress can be calculated from single-phase heat transfer equations and the wall shear stress. There does not appear to be an effect of Prandtl number or mixture composition other than that based on properties of the pure components. With vertical upward flow in the annular regime horizontal, and vertical downward flow, heat transfer coefficients with phase change are predicted by the wall shear stress model. With boiling in vertical upward flow in the slug regime, heat transfer coefficients are about 75% of the coefficients calculated from the wall shear stress. This indicates that the pressure drop with phase change may be less than without phase change for these conditions.

• Research Organization: Ethyl Corporation, Baton Rouge, Louisiana 70821
• OSTI ID: 6103876
• Journal Information: Ind. Eng. Chem. Fundam.; (United States), Journal Name: Ind. Eng. Chem. Fundam.; (United States) Vol. 21:4; ISSN IECFA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
BOILING
CALCULATION METHODS
CONFIGURATION
ENERGY TRANSFER
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
FLUID-STRUCTURE INTERACTIONS
FLUIDS
HEAT TRANSFER
MATHEMATICAL MODELS
MECHANICS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRANDTL NUMBER
PRESSURE DROP
SHEAR
SPACE
THERMODYNAMIC PROPERTIES
TUBES
VAPOR CONDENSATION
WALLS