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

Report Date:

2008-09-01

Pagination or Media Count:

340.0

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 Wsq cm. Detailed predictive tools are provided to tackle the design of a hybrid cooling module.

Subject Categories:

  • Electrical and Electronic Equipment
  • Air Conditioning, Heating, Lighting and Ventilating
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE