NDLI: Optimization of Refrigeration Systems for High-Heat-Flux Microelectronics

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Phelan, P. E. Gupta, Y. Tyagi, H. Prasher, R. Cattano, J. Michna, G. Zhou, R. Wen, J. Jensen, M. Peles, Y.
Copyright Year	2008
Abstract	Increasingly, military and civilian applications of electronics require extremely high heat fluxes, on the order of 1000 W/cm2. Thermal management solutions for these severe operating conditions are subject to a number of constraints, including energy consumption, controllability, and the volume or size of the package. Calculations indicate that the only possible approach to meeting this heat flux condition, while maintaining the chip temperature below 50 °C, is to utilize refrigeration. Here we report an initial optimization of the refrigeration system design. Because the outlet quality of the fluid leaving the evaporator must be held to approximately less than 20%, in order to avoid reaching critical heat flux, the refrigeration system design is dramatically different from typical configurations for household applications. In short, a simple vapor-compression cycle will require excessive energy consumption, largely because of the superheat required to return the refrigerant to its vapor state before the compressor inlet. A better design is determined to be a “two-loop” cycle, in which the vapor-compression loop is coupled thermally to a primary loop that directly cools the high-heat-flux chip.
Starting Page	103
Ending Page	108
Page Count	6
File Format	PDF
ISBN	9780791848678
DOI	10.1115/IMECE2008-69113
e-ISBN	9780791838402
Volume Number	Volume 6: Electronics and Photonics
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Cycles Energy consumption Compression Temperature Military systems Vapors Electronics Microelectronic devices Compressors Critical heat flux Optimization Heat flux Design Heat Fluids Flux (metallurgy) Thermal management Refrigeration Refrigerants
Content Type	Text
Resource Type	Article

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