Accession Number : ADA486410


Title :   Two-Phase Flow in High-Heat-Flux Micro-Channel Heat Sink for Refrigeration Cooling Applications. Part 1: Micro-Channel Heat Sink for Direct Refrigeration Cooling


Descriptive Note : Final rept. 1 Apr 2007-30 Sep 2008


Corporate Author : PURDUE UNIV LAFAYETTE IN SCHOOL OF MECHANICAL ENGINEERING


Personal Author(s) : Mudawar, Issam ; Lee, Jaeseon ; Sung, Myung Ki


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a486410.pdf


Report Date : Sep 2008


Pagination or Media Count : 340


Abstract : This report examines the pressure drop and heat transfer characteristics of two-phase micro-channel heat sinks. New models and correlations are proposed for both saturated and subcooled boiling conditions. These tools are shown to provide accurate predictions of pressure drop, two-phase heat transfer coefficient and critical heat flux. Also discussed in this report is a new hybrid cooling system that combines the cooling attributes of micro-channel flow and jet impingement. It is shown this system is very effective at meeting the cooling demands of high-flux defense electronics, including the ability to dissipate in excess of 1000 W/sq cm. Detailed predictive tools are provided to tackle the design of a hybrid cooling module.


Descriptors :   *HEAT TRANSFER COEFFICIENTS , *HEAT SINKS , *ELECTRONICS , *COOLING , *HEAT FLUX , *HEAT TRANSFER , TWO PHASE FLOW , SUPERCOOLING , IMPINGEMENT , SATURATION , PREDICTIONS , PRESSURE


Subject Categories : Electrical and Electronic Equipment
      Air Condition, Heating, Lighting & Ventilating
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE