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
Fully immersion of servers in electrically non-conductive (dielectric) fluid has recently become a promising technique for minimizing cooling energy consumption in data centers. The improved thermal properties of these dielectric fluids facilitate considerable savings in both upfront and operating cost over traditional air-cooling. This technology provides an opportunity for accommodating increased power densities. It also minimizes and addresses the common operational issues of air cooling methods like overheating and temperature swing in the system, fan failures, dust, air quality, and corrosion. This paper presents various data about the performance of a fully single-phase dielectric fluid immersed server over wide temperature ranges (environment temperature) from 25°C to 55°C for prolonged periods in an environmental chamber. This work explores the effects of high temperature on the performance of a server and other components like pump, along with potential issues associated with extreme climatic conditions. The experimental data serves as a means to determine failure criteria for the server and pump by subjecting the system to accelerated thermal aging conditions i.e. around 55°C, consequently simulating the most extreme environmental conditions that the server may encounter. Connector seals are inspected for expected degradation upon temperature cycling typically at such extreme conditions. Throttling limit for the server and pump power draw for different temperatures are examined to assess pump performance. Determining the relations between component behavior and operating temperature provides an accurate measure of lifetime of a server. The scope of this paper can be expanded by reviewing the effects of low temperatures (from -20°C to room temperature) on server and component performance. Changes to various performance parameters like power draw of pump and server, lowest operating temperature and an understanding of issues like condensation can be examined to quantify upper and lower limits for pump and server performance.
Keywords
Non-conductive, Immersion cooling
Disciplines
Aerospace Engineering | Engineering | Mechanical Engineering
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Bansode, Pratik Vithoba, "MEASUREMENT OF THE THERMAL PERFORMANCE OF A SINGLE-PHASE IMMERSION COOLED SERVER AT ELEVATED TEMPERATURES FOR PROLONGED TIME" (2018). Mechanical and Aerospace Engineering Theses. 954.
https://mavmatrix.uta.edu/mechaerospace_theses/954
Comments
Degree granted by The University of Texas at Arlington