Prediction of micro surface cooler performance for different rectangular type microchannels dimensions
详细信息 查看全文
- 作者：Natrah Binti Kamaruzaman ; Flavio Brighenti ; Juergen J. Br ; ner ; Aminuddin Saat
- 关键词：Microchannel ; Heat transfer ; Single-phase flow ; Numerical simulation
- 刊名：International Journal of Heat and Fluid Flow
- 出版年：December, 2013
- 年：2013
- 卷：44
- 期：Complete
- 页码：644-651
- 全文大小：2732 K
文摘
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.