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Numerical analysis and parametric study of micro-channel heat exchanger for single phase water cooling

Publication Date : 10/07/2015

Author(s) :

Patil J.D. , Gaikwad S.M..

Conference Name :
4th International Conference on Recent Trends in Engineering & Technology(ICRTET-2015) July 2-4,2015 Organized by SNJB's KBJ College of Engineering,Chandwad,Nashik,Maharashtra,India

Abstract :

Today with the miniaturization of electronic components with increased speed of computational capabilities, thermal management of microelectronic components is a challenging problem. Overheating of these micro components and micro devices led to the use of mini and micro channels in the above mentioned technologies. The aim is to eliminate as fast as possible the maximum heat quantity from these systems in order to ensure an increased reliability and functional stability. Micro channel heat exchangers with direct liquid cooling are capable of removing high heat flux. Whereas, this high heat removal capability of this device is associated with increased pressure drop penalty. Hence channel size optimization becomes necessary in selecting correct channel geometry for desired application. Present paper deals with the numerical analysis and parametric study of microchannel. This parametric study will be useful for selection of channel geometry according to system requirements. The results shows that for the same cooling requirements (for same ambient to junction temperature difference 60oC, same chip size 10mmX10mm and same heat flux 300 W/cm2) you have a choice of selecting channel geometries for: 1) Channel with hydraulic diameter of 100 μm having high convective heat transfer coefficient of 40000 W/m2 K and maximum pressure drop of 35kPa. 2) Channel with hydraulic diameter of 180 μm having low convective heat transfer coefficient of 20000 W/m2 K and minimum pressure drop of 5KPa.

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