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ע⣺Փڡ?ѧѧ?999,13(4):309-314l
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㽭Wܹо310027

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An analysis on the heat transfer of pin fin array of minimum entropy generation

Yaxin Su Zhongyang Luo Kefa Cen Mingjiang Ni
( Institute of Thermal Power Engineering, Zhejiang University , Hangzhou, 310027 )

Abstract: In this paper , the thermodynamic concept of entropy generation is applied to study the heat transfer of an array of pin fins . Beginning with the minimization of variable irreversibility, an analysis is made on the influence of the parameters such as pin spacing , pin diameter, the property of heat transfer fluid, heat duty et al . Its found that all the dimensionless entropy generation number will have a minimum value under different parameters and a corresponding optimal Reynolds number Red,opt exists. A comparison of an in-line and staggered pin fin array is made . The results will be helpful for the design of pin fins that conserve more available work.
Keywords: pin fin array; irreversibility; entropy generation minimization

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