کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
655395 | 1457637 | 2013 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Prediction of micro surface cooler performance for different rectangular type microchannels dimensions Prediction of micro surface cooler performance for different rectangular type microchannels dimensions](/preview/png/655395.png)
• Stagnant points should be eliminated to enhance device’s performance.
• Reducing the short microchannel’s depth enhance the heat transfer.
• Increasing the width of short microchannel enhance the heat transfer.
In this publication the investigation of the heat transfer characteristics and pressure drop in a micro surface cooler for different microchannel geometries by CFD simulation is described. The simulation is considering only a single row of microchannels with laminar flow, taking advantage of symmetry effects for the total micro surface cooler device. A comparison between simulation and experimental results has been carried out. The maximum temperature deviation of 10 K has been found from the comparison study, especially for higher heat flux applied. Changing the microchannel depth and width results in a significant effect to cooling capability and the pressure drop of the system. A microchannel depth decreased by a factor of two provides a heat transfer coefficient increase of about 43% for devices made of polymer. At the same time, the heat transfer surface temperature is decreased by ten degrees.This study is expected to lead to a guideline for the optimization of micro surface coolers with short microchannels.
Journal: International Journal of Heat and Fluid Flow - Volume 44, December 2013, Pages 644–651