提出一种新的针肋结构,采用直径为0.25 mm的圆柱型针肋,在一定的错排和顺排相结合的优化布置方式下,能获得较高的换热效率.在三维空间上的对流换热模拟表明,铜制的针肋结构的换热系数要高出百叶窗翅片24%～34%,而流阻仅高出10%～16%.总换热量取决于翅片材料的导热性能,导热系数越高,针肋的强化作用约明显.本文提出的针肋翅片结构可以用来制造紧凑性更高的换热器.
参考文献
| [1] | C J Davenport .Heat TraDSfer and Fluid Flow in Louvered Triangular Ducts[D].CNAA,Lanchester Polytechnic,1980. |
| [2] | Shanoun R L Webb .Prediction of Heat Transfer and Friction for the Louver Fin Geometry[J].J Heat rnansfer,1992,114(04):893-900. |
| [3] | Y J Chang;C C Wang .Air Side Performance of Brazed Aluminum Heat Exchangers[J].Journal of Enhanced Heat Transfer,1996,3(01):15-28. |
| [4] | Min J C;Xu W .Numerical Prediction of the Performances of the Fins with Punched Delta Winglets and the Louvered Fin and their Comparison[J].Journal of Enhanced Heat Transfer,2005,12(04):357-371. |
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