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Static and Dynamic Thermal Behavior of Carbon Based Nanofluids

Al Samarrai, Omar Hashim
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366734142

Abstract Details

2013, Master of Science (M.S.), University of Dayton, Mechanical Engineering.
Nanofluids are a new class of heat transfer fluids which are engineered by dispersing nanometer-sized solid particles or tubes in conventional heat transfer fluids such as water, ethylene glycol, and engine oil. The first part of this study includes carbon nanotube (CNT)-ethylene glycol (EG) suspension as thermal management fluids. Three types of CNTs with various degrees of crystallinity and surface energy were prepared using heat-treatment temperature. The thermal conductivity of nanofluids tested at varying concentration from 0% to 1.2% using static and dynamic thermal tests. The CNT type and volume concentration were investigated at various shear rates. The thermal resistance of the test suspensions decreased with increasing shear rate. These tests showed that CNT with higher crystallinity and concentration exhibit better thermal performance. However, these CNT tend to break down under high shear. Conversely, CNT with medium crystallinity exhibits the best compromise. The second part of the study includes the formulation of a theoretical model for the effective thermal conductivity of nanofluids. The model is based on a novel point of view regarding the arrangement of nanoparticles in the base fluid. The predictions from the model show a reasonably good agreement with the experimental results.
Khalid Lafdi (Advisor)
kevin Hallinan (Committee Member)
Muhammad Usman (Committee Member)
127 p.
Mechanical Engineering
nanofluid; carbon; nanotube; thermal; CNT

Recommended Citations

Citations

  • Al Samarrai, O. H. (2013). Static and Dynamic Thermal Behavior of Carbon Based Nanofluids [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366734142

    APA Style (7th edition)

  • Al Samarrai, Omar. Static and Dynamic Thermal Behavior of Carbon Based Nanofluids. 2013. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366734142.

    MLA Style (8th edition)

  • Al Samarrai, Omar. "Static and Dynamic Thermal Behavior of Carbon Based Nanofluids." Master's thesis, University of Dayton, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1366734142

    Chicago Manual of Style (17th edition)

dayton1366734142
1,010
© 2013, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.