Next Article in Journal
Thermal and Catalytic Cracking of Toluene Using Char from Commercial Gasification Systems
Next Article in Special Issue
Thermal Property Measurement of Nanofluid Droplets with Temperature Gradients
Previous Article in Journal
Improving the Hybrid Electromagnetic Clamping System by Reducing the Leakage Flux and Enhancing the Effective Flux
Previous Article in Special Issue
Assessment of Measurement Accuracy of a Micro-PIV Technique for Quantitative Visualization of Al2O3 and MWCNT Nanofluid Flows
Open AccessArticle

Comparison Study on Photo-Thermal Energy Conversion Performance of Functionalized and Non-Functionalized MWCNT Nanofluid

1
Department of Mechanical Engineering, Graduate school of Chosun University, 309 Pilmundaero, Dong-gu, Gwangju 61452, Korea
2
Department of Mechanical Engineering, Chosun University, 309 Pilmundaero, Dong-gu, Gwangju 61452, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(19), 3763; https://doi.org/10.3390/en12193763
Received: 17 August 2019 / Revised: 27 September 2019 / Accepted: 29 September 2019 / Published: 1 October 2019
(This article belongs to the Special Issue Photo Thermal Conversion and Pool Boiling Heat Transfer of Nanofluid)
Multiwalled carbon nanotubes (MWCNTs) have attracted attention from researchers because of their superior thermal properties and high optical absorption. In this investigation, the thermal and optical properties of functionalized and nonfunctionalized MWCNT nanofluid based on ethylene glycol/water were experimentally studied and compared. The results indicated that the use of the functionalized MWCNT nanofluid improved the thermal properties and optical absorption performance compared with the nonfunctionalized MWCNT nanofluid. The thermal conductivity enhancement of the functionalized MWCNT nanofluid was higher than that of the nonfunctionalized MWCNT nanofluid. The maximum thermal conductivity enhancement (10.15%) was observed in a functionalized MWCNT concentration of 0.01 wt% at 50 °C compared with the base fluid. In addition, the photo-thermal energy conversion efficiency of the functionalized MWCNT nanofluid was higher than that of the nonfunctionalized one owing to its higher light absorption and thermal conductivity. View Full-Text
Keywords: MWCNT (multiwalled carbon nanotubes); functionalized; thermal conductivity; optical transmittance; extinction coefficient MWCNT (multiwalled carbon nanotubes); functionalized; thermal conductivity; optical transmittance; extinction coefficient
Show Figures

Figure 1

MDPI and ACS Style

Boldoo, T.; Ham, J.; Cho, H. Comparison Study on Photo-Thermal Energy Conversion Performance of Functionalized and Non-Functionalized MWCNT Nanofluid. Energies 2019, 12, 3763.

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.

Article Access Map by Country/Region

1
Back to TopTop