Thermal Management Capability of Phase Change Material in Additively Manufactured Heat Sinks

reportActive / Technical Report | Accesssion Number: AD1213277 | Open PDF

Abstract:

This study examines the passive thermal management capability of phase change material (PCM) to maintain thermally loaded parts within a defined temperature window as the PCM isothermally absorbs heat during phase change from solid to liquid. The study is application-based, focusing on a model of a central processing unit (CPU) from a desktop computer. Stearic acid (SA) is selected as the primary PCM based on the operating temperature range of the application, but others also are considered. Simulation models are built for transient thermal loading conditions and are used for heat sink design selection. Liquid metal (aluminum 4008) jet printing additive manufacturing with the Xerox ElemX 3D printer is used for printing parts for the study and developing a design space study for other applications using this thermal management strategy. The study found that incorporating stearic acid into a hollow heat sink lowered the average temperature transient of a modeled CPU by up to 36% compared to heat sinks of similar geometry.

Author(s):
Genito, Thomas M.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Funding Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA, MONTEREY, CA
Document Type:
Technical Report/Master's Thesis
Publication Date:
2023 Jun 01
Pagination:
156

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution Code:
A - Approved For Public Release
Distribution Statement: Public Release.
Copyright: Not Copyrighted

RECORD

Collection: TRECMS
Subject Terms
Descriptor(s):
energy storage, heat of fusion, fatty acids, thermodynamics, chemistry, heat energy, heat transfer, phase transformations, material degradation processes, specific heat, latent heat, manufacturing, mechanical engineering, plant oils, radar, microarchitecture, unmanned underwater vehicles
Keyword(s):
PCM(phase-change material), aluminum 4008, CPU(central processing unit)
Subject Categories:
Mechanical, Industrial, Civil and Marine Engineering
Modernization Areas:
Microelectronics
Communities of Interest:
; ; ;
Descriptor(s):
energy storage, chemistry, heat of fusion, fatty acids, heat energy, heat transfer, thermodynamics, manufacturing, material degradation processes, plant oils, energy transfer, specific heat, latent heat, phase transformations, radar, sugar alcohols, thermophysical properties
Creation Date:
2023 Oct 19
Update Date:
2023 Nov 29