Steady-state and transient heat transfer through fins of complex geometry

Archives of Thermodynamics

Jan TalerCracow University of Technology, Department of Thermal Power Engineering, Jana Paw?a II 37, 31-864 Krakow, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Dawid TalerCorresponding authorCracow University of Technology, Institute of Thermal Engineering and Air Protection, Warszawska 24, 31-155 Krakow, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar² 

[1] Cracow University of Technology, Department of Thermal Power Engineering, Jana Paw?a II 37, 31-864 Krakow, Poland;Cracow University of Technology, Institute of Thermal Engineering and Air Protection, Warszawska 24, 31-155 Krakow, Poland

关键词: Keywords: Fin of complex geometry;    Fin efficiency;    Finite volume method - finite element method;   

DOI  :  10.2478/aoter-2014-0017

学科分类：能源（综合）

来源: Polska Akademia Nauk * Oddzial w Gdansku, Instytut Maszyn Przeplywowych / Polish Academy of Sciences, Institute of Fluid-Flow Machinery

【 摘 要 】

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.

【 授权许可】

Unknown