Flooding during reflux condensation of steam in an inclined elliptical tube
Date
2000
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
South African Institution of Mechanical Engineering
Abstract
In this erperimental inuestigation the pressure drop is
measured between the headers located at the ends of an
in,clined air-cooled elliptical tube in which refl,ur condensation of steam occurs. The cross-section of the 7 m long
tube has a height of g7 mm (major aris) and a width
of 16 mm (minor ads). Steam temperatures are in the
range of 45o C to 65o C. The pressure drop can be predicted accurately using the Z apke- I(rri g er pressure drop
model applicable to refl,ur condensers. At a certain steam
fl,ou, rate a sudden sharp increase in the pressure drop
occurs. This phenoTne?t,on is lcnowrt, &s fl,ooding. The
rneasured aapour uelocities at fl,oodin,g agree well with
the ualues predicted by the Zapke-Krciger fl,ooding correlation. The erperimental results also show that flooding
has a detrimental effect on the thermal effectiueness of
Ihe elliptical tube.
Description
CITATION: Schoenfeld, P. D. & Kroger, D. G. 2000. Flooding during reflux condensation of steam in an inclined elliptical tube. R&D Journal, 16(1):1-8.
The original publication is available at https://www.saimeche.org.za
The original publication is available at https://www.saimeche.org.za
Keywords
Condensation, Steam engineering
Citation
Schoenfeld, P. D. & Kroger, D. G. 2000. Flooding during reflux condensation of steam in an inclined elliptical tube. R&D Journal, 16(1):1-8.