RT Journal Article
ID 677ebaf173841f83
A1 Bella, B.
A1 Cavallini, Alberto
A1 Longo, Giovanni Antonio
A1 Rossetto, Luisa
T1 Pure Vapour Condensation of Refrigerants 11 and 113 on a Horizontal Integral Finned Tube at High Vapour Velocity
JF Journal of Enhanced Heat Transfer
JO JEH(T)
YR 1994
FD 1993-03-01
VO 1
IS 1
SP 77
OP 86
AB The experimental apparatus for measuring heat transfer coefficients during condensation of halogenated refrigerants on a single horizontal finned tube is presented.<br>
Two different series of experimental runs, relative to Rll and R113 respectively, have been carried out under vapour velocity ranging from 2 to 30 m/s.<br>
Present experimental data show a heat transfer enhancement due to vapour shear stress: at the highest vapour velocity there is a 50&#37; increase in the heat transfer coefficient with respect to values measured during condensation of stagnant vapour. The enhancement starts to be evident when the vapour Reynolds number is greater than 100000.
Present experimental data are compared with the most recent theoretical models: at almost stationary conditions data are very well reproduced by Honda <i>et al</i>. &#91;1987a, 1987b&#93; model, with a mean percentage deviation around 8&#37;.

PB Begell House
LK https://www.dl.begellhouse.com/journals/4c8f5faa331b09ea,33376bd348754c84,677ebaf173841f83.html