TY - JOUR
T1 - Solar thermal absorption efficiency of carbon-based nanofluids
T2 - A comparative analysis
AU - Yu, Shang Pang
AU - Liu, Yan Xing
AU - Wei, Yi Jia
AU - Teng, Tun Ping
N1 - Publisher Copyright:
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
PY - 2025/7
Y1 - 2025/7
N2 - The revised vortex trap method (RVTM) was employed to prepare carbon-based nanofluids (CBNFs). The fundamental characteristics and solar thermal collection performance of CBNFs were evaluated to determine their suitability as working fluids for direct absorption solar collectors (DASCs). The multi-walled carbon nanotube nanofluids (MWNFs) served as a control group to further assess the viability of CBNFs in DASCs. The results indicate that the solar thermal collection performance of CBNFs was significantly higher than that of water, and 0.025 wt% CBNFs exhibiting optimal solar thermal collection performance. Specifically, the final average temperature (Tfa), heating temperature difference (TD), and heating slope (HS) of 0.025 wt% CBNFs were 5.4 °C, 15.4 %, and 15.7 % higher than those of water, respectively. Furthermore, a comprehensive comparison revealed that the solar thermal collection performance of 0.01 wt% and 0.025 wt% CBNFs prepared by RVTM was superior to that of MWNFs at the same concentrations.
AB - The revised vortex trap method (RVTM) was employed to prepare carbon-based nanofluids (CBNFs). The fundamental characteristics and solar thermal collection performance of CBNFs were evaluated to determine their suitability as working fluids for direct absorption solar collectors (DASCs). The multi-walled carbon nanotube nanofluids (MWNFs) served as a control group to further assess the viability of CBNFs in DASCs. The results indicate that the solar thermal collection performance of CBNFs was significantly higher than that of water, and 0.025 wt% CBNFs exhibiting optimal solar thermal collection performance. Specifically, the final average temperature (Tfa), heating temperature difference (TD), and heating slope (HS) of 0.025 wt% CBNFs were 5.4 °C, 15.4 %, and 15.7 % higher than those of water, respectively. Furthermore, a comprehensive comparison revealed that the solar thermal collection performance of 0.01 wt% and 0.025 wt% CBNFs prepared by RVTM was superior to that of MWNFs at the same concentrations.
KW - Carbon-based nanofluids (CBNFs)
KW - Direct absorption solar collectors (DASCs)
KW - Multi-walled carbon nanotube nanofluids (MWNFs)
KW - Revised vortex trap method (RVTM)
KW - Solar thermal collection performance
UR - https://www.scopus.com/pages/publications/105009524668
UR - https://www.scopus.com/pages/publications/105009524668#tab=citedBy
U2 - 10.1007/s12206-025-0632-4
DO - 10.1007/s12206-025-0632-4
M3 - Article
AN - SCOPUS:105009524668
SN - 1738-494X
VL - 39
SP - 4109
EP - 4119
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 7
ER -