When a liquid film falls from one horizontal tube to another below it, the flow may take the form of discrete droplets, jets, or a continuous sheet; the mode plays an important role in the heat transfer. Experiments are reported that explore the local heat transfer behavior for each of these flow patterns, and the results are related to the important features of the flow. Spatially averaged Nusselt numbers are presented and discussed, and new mode-specific design correlations are provided. This research is part of an overall study of horizontal-tube, falling-film flow and heat transfer.

1.
Armbruster, R., and Mitrovic, J., 1995, “Heat Transfer in Falling-Film on a Horizontal Tube,” Proc. 1995 National Heat Transfer Conference—Vol. 12, ASME HTD-Vol. 314, pp. 13–21.
2.
Chyu
M. C.
, and
Bergles
A. E.
,
1988
, “
Thermal Analysis of the Electrically Heated Cylindrical Test Section for Heat Transfer Experiments
,”
Experimental Thermal and Fluid Science
, Vol.
1
, pp.
19
27
.
3.
Conti, R. J., 1978, “Experimental Investigation of Horizontal-Tube Ammonia Film Evaporators With Small Temperature Differentials,” Proc. 5th Ocean Thermal Energy Conversion Conference, Miami Beach, FL, Vol. 6, pp. 161–180.
4.
Fletcher, L. S., Sernas, V., and Parken, W. H., 1975, “Evaporation Heat Transfer Coefficients for Thin Sea Water Films on Horizontal Tubes,” Industrial Engineering Chemistry, Progress Des. Dev., Vol. 14, pp. 411–416.
5.
Fujita
T.
, and
Ueda
T.
,
1976
, “
Heat Transfer to Falling Liquid Films and Film Breakdown—I
,”
International Journal of Heat and Mass Transfer
, Vol.
21
, pp.
97
108
.
6.
Ganic
E. N.
, and
Roppo
M. N.
,
1980
, “
An Experimental Study of Falling Liquid Film Breakdown on a Horizontal Cylinder During Heat Transfer
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
102
, pp.
342
346
.
7.
Gimbutis, G., 1975, “Heat Transfer in Film Heat Exchangers,” Proc. 14th International Congress of Refrigeration, Paper B I. 49, Moscow, Vol. 2, pp. 1–7.
8.
Honda
H.
,
Uchima
B.
,
Nozu
S.
,
Nakata
H.
, and
Torigoe
E.
,
1991
, “
Film Condensation of R-113 on In-Line Bundles of Horizontal Finned Tubes
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
113
, pp.
479
486
.
9.
Hu, X., 1995, “The Intertube Falling-Film Modes: Transition, Hysteresis, and Effect on Heat Transfer,” Ph.D. Thesis, University of Illinois at Urbana-Champaign, Urbana, IL.
10.
Hu
X.
, and
Jacobi
A. M.
,
1996
, “
The Intertube Failing Film: Part 1—Flow Characteristics, Mode Transitions, and Hysteresis
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
118
, this issue, pp.
616
625
.
11.
Kern
D. Q.
,
1958
, “
Mathematical Development of Tube Loading in Horizontal Condensers
,”
AIChE Journal
, Vol.
4
, pp.
157
160
.
12.
Kutateladze, S. S., 1963, Fundamentals of Heat Transfer, Academic Press, New York.
13.
Kutateladze
S. S.
,
Gogonin
I. I.
, and
Sosunov
V. I.
,
1985
, “
The Influence of Condensate Flow Rate on Heat Transfer in Film Condensation of Stationary Vapour on Horizontal Tube Banks
,”
International Journal of Heat and Mass Transfer
, Vol.
28
, pp.
1011
1018
.
14.
Maron-Moalem
D.
,
Sideman
S.
, and
Dukler
A. E.
,
1978
, “
Dripping Characteristics in a Horizontal Tube Film Evaporator
,”
Desalination
, Vol.
27
, pp.
117
127
.
15.
Marto
P. J.
,
1986
, “
Recent Progress in Enhancing Film Condensation Heat Transfer on Horizontal Tubes
,”
Heat Transfer Engineering
, Vol.
7
, pp.
53
63
.
16.
Mitrovic, J., 1986, “Influence of Tube Spacing and Flow Rate on Heat Transfer From a Horizontal Tube to a Falling Liquid Film,” Proc. 8th International Heat Transfer Conference, San Francisco, Vol. 4, pp. 1949–1956.
17.
Parken, W. H., 1975, “Heat Transfer to Thin Water Films on Horizontal Tubes,” Ph.D. Dissertation, Rutgers University, NJ.
18.
Parken
W. H.
,
Fletcher
L. S.
,
Sernas
V.
, and
Han
J. C.
,
1990
, “
Heat Transfer Through Falling Film Evaporation and Boiling on Horizontal Tubes
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
112
, pp.
744
750
.
19.
Rogers
J. T.
,
1981
, “
Laminar Falling Film Flow and Heat Transfer Characteristics on Horizontal Tubes
,”
The Canadian Journal of Chemical Engineering
, Vol.
59
, pp.
213
222
.
20.
Rogers
J. T.
, and
Goindi
S. S.
,
1989
, “
Experimental Laminar Falling Film Heat Transfer Coefficients on a Large Diameter Horizontal Tube
,”
The Canadian Journal of Chemical Engineering
, Vol.
67
, pp.
560
568
.
21.
Rogers, J. T., Goindi, S. S., and Lamari, M., 1995, “Turbulent Falling Film Flow and Heat Transfer on Horizontal Tubes,” Proc. 1995 National Heat Transfer Conference—Vol 12, ASME HTD-Vol. 314, pp. 3–12.
22.
Rohsenow, W., 1985, “Boiling,” in: Handbook of Heat Transfer Fundamentals, 2nded., Rohsenow, Hartnett, and Ganic, eds., McGraw-Hill, New York, pp. 12–78.
23.
Seban, R. A., 1978, “Transport to Falling Films,” Proc. Sixth International Heat Transfer Conference, Keynote Paper KS-30, Toronto.
24.
Sernas
V.
,
1979
, “
Heat Transfer Correlation for Subcooled Water Films on Horizontal Tubes
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
101
, pp.
176
180
.
25.
Shklover
G. G.
, and
Semenov
V. P.
,
1981
, “
The Flow Mode of Condensate in a Multirow Horizontal Tube Bundle
,”
Heat Transfer—Soviet Research
, Vol.
13
, No.
3
, pp.
127
133
.
26.
Slayzak
S. J.
,
Viskanta
R.
, and
Incropera
F. P.
,
1994
a, “
Effects of Interaction Between Adjacent Free Surface Planar Jets on Local Heat Transfer From the Impingement Surface
,”
International Journal of Heat and Mass Transfer
, Vol.
37
, pp.
269
282
.
27.
Slayzak
S. J.
,
Viskanta
R.
, and
Incropera
F. P.
,
1994
b, “
Effects of Interactions Between Adjoining Rows of Circular, Free-Surface Jets on Local Heat Transfer From the Impingement Surface
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
116
, pp.
88
95
.
28.
Solan, A., and Zfati, A., 1974, “Heat Transfer in Laminar Flow of a Liquid Film on a Horizontal Cylinder,” Proc. 5th International Heat Transfer Conference, Tokyo, Sept. 3–7, Vol. 2, pp. 90–93.
29.
Yung
D.
,
Lorentz
J. J.
, and
Ganic
E. N.
,
1980
, “
Vapor/Liquid Interaction and Entrainment in Falling Film Evaporators
,”
ASME JOURNAL OF HEAT TRANSFER
, Vol.
102
, pp.
20
25
.
This content is only available via PDF.
You do not currently have access to this content.