Condensation heat transfer on horizontal tubes with ribs of constant curvature

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Heat Transfer - Soviet Research; (United States)

OSTI ID:5709669

Kabov, O A; Padyukov, I V

This paper reports on heat transfer data that are obtained for film condensation of pure, saturated, practically nonflowing vapor of refrigerants 11 and 12 on single horizontal tubes with transverse annular fins of constant curvature. The fin and the trough are circumscribed by semicircles of the same radius. The properties of the liquid, the film Reynolds number and the surface curvature radii were varied within wide ranges. There was a three-fold and more intensification of the surface-mean heat transfer coefficient as compared to a horizontal smooth tube of the same diameter at the same difference between the saturated steam and the wall temperatures.

• OSTI ID: 5709669
• Journal Information: Heat Transfer - Soviet Research; (United States), Journal Name: Heat Transfer - Soviet Research; (United States) Vol. 23:2; ISSN 0440-5749; ISSN HTSRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
ANNULAR SPACE
CALCULATION METHODS
CONFIGURATION
DESIGN
ENERGY TRANSFER
FILM CONDENSATION
FINS
FLUIDS
GASES
HEAT TRANSFER
LIQUIDS
REACTIVITY COEFFICIENTS
REFRIGERANTS
REYNOLDS NUMBER
SPACE
STEAM LINES
TEMPERATURE COEFFICIENT
TUBES
VAPOR CONDENSATION
VAPORS
WALLS
WORKING FLUIDS