ORCID Identifier(s)

0000-0003-0128-4810

Graduation Semester and Year

2018

Language

English

Document Type

Thesis

Degree Name

Master of Science in Mechanical Engineering

Department

Mechanical and Aerospace Engineering

First Advisor

Dereje Agonafer

Abstract

The growth in the computing and data industry demands high-performance data centers where the thermal management issues are of greater concern. A cooling system paradigm using the immersion cooling technology is a more reliable and effective method. In immersion cooling, servers are directly submerged into a dielectric fluid. A comparative study on the reliability of the passive components cooled by air, mineral oil and EC-100 was carried out. The Accelerated Thermal Cycling test based on ATC JEDEC is applicable only for air cooling. The ASTM standards D 3455 with some suitable modification was adopted to test the material compatibility with Immersion cooling. The experiment is designed to operate at an elevated temperature of 45oC and relative humidity of 35%. For every 72-hour time interval 3 samples each of thick film resistor, an electrolytic capacitor, polymer capacitor and transistors were taken out and the experiment was continued for the remaining samples. The study focuses on analyzing the change in the electrical properties, and the formation of cracks in the microstructural level of the passive components. The electrical properties such as resistance, capacitance etc. are measured using the multimeter and the microstructure study is done using the Scanning Electron Microscope (SEM). This experiment will provide with trend data of the effect of thermal aging on the electrical property of the passive components aged by air, mineral oil and synthetic fluid. This trend data provides with the comparative performance study of the passive components aged by air, mineral oil and synthetic fluid and, provides the advantages and disadvantages of each medium.

Keywords

Immersion cooling, Single-phase immersion cooling, Reliability of passive components, SEM for structural integrity of server components, Scanning Electron Microscope analysis of Electronic Components, Reliability of traditional cooled of servers, Reliability of immersion cooled of servers

Disciplines

Aerospace Engineering | Engineering | Mechanical Engineering

Comments

Degree granted by The University of Texas at Arlington

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