MICROSTRUCTURAL SURFACE INCORPORATION OF PHASE CHANGE MATERIALS FOR THERMAL MANAGEMENT APPLICATIONS
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Authors
Anderson, Christopher J.
Subjects
phase change material
PCM
latent energy storage
heat sink
aluminum heat sink
CPU cooling
eicosane
anodization techniques
passive thermal management
PCM
latent energy storage
heat sink
aluminum heat sink
CPU cooling
eicosane
anodization techniques
passive thermal management
Advisors
Luhrs, Claudia C.
Date of Issue
2022-06
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Thermal management strategies employed to mitigate the detrimental effects of elevated temperatures include the use of heat sinks or spreaders, thermal interface materials, and phase change materials (PCM), among others. PCM are substances capable of absorbing or releasing thermal energy when they undergo a phase transition. The goal of this thesis was to engineer a surface layer that contained a phase change material on top of a metallic component used for thermal dissipation and test its performance. The ideal conditions to create a porous anodic layer that could contain phase change material in an aluminum substrate were determined. Vacuum impregnation was used to incorporate the phase change material within the annealed anodic layer. Sealing materials were tested regarding their effectiveness to contain the PCM, their thermal conductivity and ability to withstand thermal cycles. Thermal tests were run to compare the behavior of samples containing PCM with those that were only anodized and raw aluminum. The use of the alkane eicosane as PCM, introduced in pores created by anodization techniques in an aluminum heat sink that served as substrate, resulted in specimens that presented lower temperatures during the heating cycles than those without PCM, proving the potential of this strategy to manage transient thermal loads.
Type
Thesis
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
ESTEP, Monterey, CA 93943
Funder
Format
Citation
Distribution Statement
Approved for public release. Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.