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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Han, Zenghu Yang, Bao |
| Copyright Year | 2008 |
| Abstract | The use of SOLID-particles has long been a common way of increasing fluid thermal conductivity. In this paper, nanoemulsion fluids—dispersions of LIQUID-nanodroplets—are proposed. As an example, water-in-FC72 nanoemulsion fluids are developed, and their thermophysical properties and impact on natural convective heat transfer are investigated experimentally. A significant increase in thermal conductivity—up to 52% for 12vol% of water nanodroplets (or 7.1 wt%)—is observed in the fluids. The enhancement in conductivity and viscosity of the fluids is found to be nonlinear with water loading, indicating an important role of the hydrodynamic interaction and aggregation of nanodroplets. However, the relative viscosity is found to be about two times the relative conductivity if compared at the same water loading. The presence of water nanodroplets is found to systematically increase the natural convective heat transfer coefficient in these fluids, in contrast to the observation in several conventional nanofluids containing solid nanoparticles. |
| Sponsorship | Nanotechnology Institute |
| Starting Page | 611 |
| Ending Page | 614 |
| Page Count | 4 |
| File Format | |
| ISBN | 0791842924 |
| DOI | 10.1115/MNHT2008-52351 |
| e-ISBN | 0791838137 |
| Volume Number | ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B |
| Conference Proceedings | ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer |
| Language | English |
| Publisher Date | 2008-06-06 |
| Publisher Place | Tainan, Taiwan |
| Access Restriction | Subscribed |
| Subject Keyword | Water Viscosity Nanoparticles Disperse systems Fluids Particulate matter Nanofluids Thermal conductivity Convection |
| Content Type | Text |
| Resource Type | Article |
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