TY  - JOUR
T1  - New Correlation Equations for Finned Tube Heat Exchangers
AU - Lafta Ghashim, Sajida 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 5
SP  - 1538
EP  - 1548
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.1538.1548
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.1538.1548
KW  - Circular finned tubes
KW  -staggered array
KW  -in line bundle arrangement
KW  -heat transfer coefficient
KW  -fin
diameter
KW  -transverse tube pitch
AB  - A new correlation equations were conducted on heat transfer parameters of air-side in circular
finned-tube heat exchangers of staggered and in line arrangement. A Nusselt number and Euler number
correlation are derived. The effects of fin height, fin spacing, fin pitch, tube outside diameter, fin diameter,
transverse tube pitch, longitudinal tube pitch and number of rows are reflected in the correlations. The study
covered the range of Reynolds number (8&times;10<sup>3</sup>-5&times;10<sup>4</sup>). Number of bundles used in this correlation 56 staggered
and 33 in line. A numerical solution based on (DGA V1.00) and Excel programs were used to find constants
of correlation equations. Also, Tecplot program is used to draw curves of results. Results show maximum
deviation are in Nusselt number and Euler number correlations (6, 18% for staggered and 10, 11% for in line),
respectively in addition, the effect of fin spacing or fin height on Nusselt number and Euler number in one
bundle (S1 staggered and I1 in line) are investigated. Results showed that in staggered bundle arrangement S1,
the Nu number increased and Eu number decreased when the fin spacing increased and fin height decreased.
While the effect of decreased fin spacing and increased fin height led to in increased Nu number and Eu number
at bundle I1 in line arrangement.
ER  -