A Study of Silver Nanofluid on Sintered Heat Pipe Thermal Performance
| Autor: | Chia-Ching Huang, 黃嘉慶 |
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| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 Dilute dispersion of silver nanoparticles in pure water was employed as the working fluid for conventional 0.7mm wick-thickness sintered circular heat pipe. The nanofluid used in present study is an aqueous solution of 10nm and 35nm diameter silver nanoparticles. The tested nanoparticle concentrations ranged from 1ppm, 10ppm and 100ppm, respectively. The experiment was performed to measure the temperature distribution and compare the heat pipe temperature difference using nanofluid and DI-water. The condenser section of the heat pipe was placed in a water-cooling jacket that was cooled by water supplied from a constant temperature bath maintained at 40 degrees centigrade. The input power are 30W-70W. As a result, at the same charge filling ratio, the measured nano-fluids filled heat pipe temperature distribution demonstrated that the thermal resistance decreased 21~55% compared to DI-water at an input power of 50W. In addition, the nanofluid as working medium in heat pipe reached to 70W and is higher than pure water about 20W. The study also investigates the thermal performance of silver nanofluid heat pipe under 12 hours testing. The result reappeared that the nanofluid heat pipe was stable and temperature difference was lower than DI-water filled in the test period. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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