Various methods for steady-state and transient analysis of temperature distribution and efficiency of continuous-plate fins are presented. For a constant heat transfer coefficient over the fin surface, the plate fin can be divided into imaginary rectangular or hexangular fins. At first approximate methods for determining the steady-state fin efficiency like the method of equivalent circular fin and the sector method are discussed. When the fin geometry is complex, thus transient temperature distribution and fin efficiency can be determined using numerical methods. A numerical method for transient analysis of fins with complex geometry is developed. Transient temperature distributions in continuous fins attached to oval tubes is computed using the finite volume - finite element methods. The developed method can be used in the transient analysis of compact heat exchangers to calculate correctly the heat flow rate transferred from the finned tubes to the fluid.

JO - Archives of Thermodynamics L1 - http://rhis.czasopisma.pan.pl/Content/94557/PDF/08_paper.pdf L2 - http://rhis.czasopisma.pan.pl/Content/94557 PY - 2014 IS - No 2 June EP - 133 KW - fin of complex geometry KW - fin efficiency KW - finite volume method KW - finite element method A1 - Taler, Dawid A1 - Taler, Jan PB - The Committee on Thermodynamics and Combustion of the Polish Academy of Sciences JF - Archives of Thermodynamics SP - 117 T1 - Steady-state and transient heat transfer through fins of complex geometry DA - 2014 UR - http://rhis.czasopisma.pan.pl/dlibra/docmetadata?id=94557 DOI - 10.2478/aoter-2014-0017 ER -