Comparative study on heat transfer characteristics of sintered and mesh wick heat pipes using CuO nanofluids
Journal article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Kumaresan G., Venkatachalapathy S., Asirvatham L.G., Wongwises S.
Publisher: Elsevier
Publication year: 2014
Journal: International Communications in Heat and Mass Transfer (0735-1933)
Volume number: 57
Start page: 208
End page: 215
Number of pages: 8
ISSN: 0735-1933
eISSN: 1879-0178
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
An experimental investigation has been carried out to compare the enhancement in the thermal performance of sintered and mesh wick heat pipes by varying the working fluid, inclination angle and heat input. Similar geometrical specifications of 12, 330 and 1. mm respectively are selected for the outer diameter, length and wick thickness and kept constant for both sintered and mesh wick heat pipes. The study focuses on changes in surface temperature distribution, thermal resistance and effective thermal conductivity of heat pipes. The results showed that the maximum reduction in surface temperature is obtained for sintered wick heat pipe at 45ฐ tilt angle and 60ฐ for mesh wick heat pipe with CuO/DI water nanofluid concentration at 1.0. wt.% for both the cases. The reduction in thermal resistance of sintered wick heat pipe is 13.92% higher compared with mesh wick heat pipe for the same heat input, mass concentration and inclination angle. Presence of CuO nanoparticles in DI water and increasing heat input tremendously increases the thermal conductivity of heat pipes. An important observation from this study is the sole effect of sintered wick in heat pipe not only reduces the thermal resistance but also increases the heat transport capacity up to 20. W compared with that of mesh wick. ฉ 2014 Elsevier Ltd.
Keywords
Surface temperature, Wick structure
Contact Information