FALLING FILM EVAPORATION AND BOILING IN CIRCUMFERENTIAL AND AXIAL GROOVES ON HORIZONTAL TUBES Academic Article

abstract

• Evaporation and boiling heat-transfer coefficients are presented for thin water films flowing over the outside of horizontal, electrically heated brass tubes. Tests were conducted with a 5.08-cm-dlameter smooth tube, a 5.08-cm-diameter circumferentially grooved tube, and a 5.08-cm-dlameter axially grooved tube. Both local and average heat-transfer data were obtained for nonboHIng and boiling conditions corresponding to feed-water temperatures ranging from 49 to 127 C and heat-flux values ranging from 30 000 to 80 000 W/m2. Flow rates ranged from 1.16 to 3.79 cm3/s per centimeter length of tube. Correlations of the average heat-transfer coefficients for nonbolllng and bofllng conditions were developed and compared. The results Indicate that both enhanced tubes provided higher heat-transfer coefficients than the smooth tube. 1985, American Chemical Society. All rights reserved.

authors

• Han, Je-Chin

published proceedings

• INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT

author list (cited authors)

• HAN, J. C., & FLETCHER, L. S.

citation count

• 58

complete list of authors

• HAN, JC||FLETCHER, LS

publication date

• July 1985

publisher

• American Chemical Society (ACS)  Publisher

published in

• Industrial and Engineering Chemistry Process Design and Development  Journal

Digital Object Identifier (DOI)

• 10.1021/i200030a009

start page

• 570

end page

• 575

volume

• 24

issue

• 3

URL

• http://dx.doi.org/10.1021/i200030a009