کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
658593 | 1458104 | 2011 | 12 صفحه PDF | دانلود رایگان |
This paper reports the optimization of a heat sink composed of parallel tubes in a solid matrix of fixed dimensions for the following cases: (i) fixed pressure drop; (ii) fixed pumping power and (iii) fixed heat transfer rate density. The method of the intersection of asymptotes is employed using the dimensionless thermal length (x∗) as primary optimization variable, and approximate theoretical expressions for predicting the optimum ratio of diameter to tube length (D/L) are presented for each case. When the system is optimized with fixed heat transfer density it is found that the optimum values of both x∗ and D/L are very close to those that correspond to the joint minimization of pressure drop and pumping power. These results are validated and complemented by means of numerical simulations.
Journal: International Journal of Heat and Mass Transfer - Volume 54, Issues 19–20, September 2011, Pages 4288–4299