Abstract

Super hydrophobic wavy mini channel heat sink is analyzed experimentally for thermal and hydraulic analysis using SiO₂ and TiO₂ aqueous nanofluids with volumetric concentration of 0.01% and 0.02%. The test rig is validated by comparing the data obtained for water (distilled) using simple wavy mini channel heat sink (without super hydrophobic coating) with the theoretical model of Peng and Peterson. Three cartridge heaters were used to supply uniform heat flux to the base of mini channel heat sink. Results were obtained at steady state in laminar regime of flow at Reynolds number ranging from 400 to 1230. Data were acquired at heating powers of 40, 55, and 70 W. Augmentation of 31.37% in heat transfer was recorded for super hydrophobic mini channel heat sink as compared to conventional heat sink with a reduction of 39.02% in pressure drop. The results can be summarized as enhancement of heat transfer with a noticeable diminution in pressure drop and hence reduced power consumption.

摘要

_{使用 SiO 2}和 TiO ₂对超疏水波浪形微型通道散热器进行热分析和水力分析实验分析体积浓度为 0.01% 和 0.02% 的水性纳米流体。通过将使用简单的波浪形微型通道散热器（无超疏水涂层）获得的水（蒸馏水）数据与 Peng 和 Peterson 的理论模型进行比较，验证了试验台。三个筒式加热器用于为微型通道散热器的底部提供均匀的热通量。在雷诺数范围为 400 至 1230 的层流状态下，在稳定状态下获得结果。在 40、55 和 70 W 的加热功率下获取数据。记录了超疏水微型通道热传递增加 31.37%与传统散热器相比，压降降低了 39.02%。