Next Article in Journal
Predictive Models for Photovoltaic Electricity Production in Hot Weather Conditions
Previous Article in Journal
Force and Motion Characteristics of Contamination Particles near the High Voltage End of UHVDC Insulator
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessFeature PaperArticle
Energies 2017, 10(7), 974; https://doi.org/10.3390/en10070974

Thermal Performance of a Vertical U-Shaped Thermosyphon Containing a Phase-Change Material Suspension Fluid

1
Department of Mechanical Engineering, National Cheng Kung University, Tainan 701, Taiwan
2
Department of Civil Engineering, National Cheng Kung University, Tainan 701, Taiwan
*
Authors to whom correspondence should be addressed.
Received: 6 May 2017 / Revised: 1 July 2017 / Accepted: 7 July 2017 / Published: 11 July 2017
View Full-Text   |   Download PDF [4438 KB, uploaded 12 July 2017]   |  

Abstract

This study investigated the thermal performance of a vertical U-shaped thermosyphon containing a phase-change material (PCM) suspension fluid via experimentation. The heating and cooling sections were located at the top and bottom of the loop, respectively. The lengths of the heating and cooling sections each accounted for one fifth of the height of the loop. Pure water and a PCM (octadecane) suspension fluid were used to fill the loop to compare the thermal performance of the thermosyphon under different heating power, cooling temperature, and PCM suspension concentration conditions. The results showed that, when the PCM suspension concentration was higher than a critical value, the addition of the PCM suspension had no positive effect on reducing the highest temperature of the fluid in the loop but instead resulted in an increase in fluid temperature. More detailed experiments are needed to observe the phenomena and decide critical values under different experimental parameters. View Full-Text
Keywords: phase-change material suspension; thermal performance natural circulation loop; thermosiphon; octadecane phase-change material suspension; thermal performance natural circulation loop; thermosiphon; octadecane
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ho, C.J.; Hsu, H.-I.; Ho, T.-A.; Lai, C.-M. Thermal Performance of a Vertical U-Shaped Thermosyphon Containing a Phase-Change Material Suspension Fluid. Energies 2017, 10, 974.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top