General equation for flow condensation heat transfer coefficient in different orientations of helical coils of smooth tubes using genetic programming
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- @Article{HOSSEINI:2020:ICHMT,
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author = "S. H. Hosseini and M. A. Moradkhani and
Mirza M. Shah and M. Edalati",
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title = "General equation for flow condensation heat transfer
coefficient in different orientations of helical coils
of smooth tubes using genetic programming",
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journal = "International Communications in Heat and Mass
Transfer",
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volume = "119",
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pages = "104916",
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year = "2020",
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ISSN = "0735-1933",
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DOI = "doi:10.1016/j.icheatmasstransfer.2020.104916",
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URL = "https://www.sciencedirect.com/science/article/pii/S0735193320304449",
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keywords = "genetic algorithms, genetic programming, Coiled tubes,
Two-phase flow, Heat transfer coefficient,
Condensation, Correlation",
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abstract = "There are several experimental studies on heat
transfer during condensation in coiled tubes. But there
is no well-verified method for calculating of heat
transfer coefficient. In this study, a general
non-linear correlation for estimation of heat transfer
coefficient during flow condensation in different
orientations of smooth coiled tubes is proposed. The
correlation has been obtained by correlating the
Nusselt number with two-phase Reynolds number, reduced
pressure, Froude number, tube to coil diameter ratio,
and inclination angle of coil axis to horizontal using
Genetic programming (GP). This model has been validated
with 503 experimental data points from 9 sources, which
include different tube diameters, coil diameters,
inclination angles, orientations, working fluids, mass
fluxes and saturation temperatures. The new correlation
predicts experimental data points with an excellent
value of average absolute relative deviation (AARD) of
9.20percent. The same database is also compared to 9
available correlations for straight and coiled tubes.
Their deviations are significantly higher than the
present correlation. In addition, impact of each input
parameter on heat transfer coefficient in coiled tubes
has been discussed",
- }
Genetic Programming entries for
Seyyed Hossein Hosseini
Mohammad Amin Moradkhani
Mirza M Shah
M Edalati
Citations