Article
Energy & Fuels
Chen Yan, Junfei Liang, Xiaobin Zhong, Chao Li, Daokun Chen, Zewei Wang, Shuxian Li, Junfeng Xu, Han Wang, Yufeng Li, Yangang Zhang, Hantao Liu
Summary: In this study, a composite nanofluid was developed by dispersing hexagonal boron nitride nanosheets into solar salt, which improved the thermal conductivity and specific heat capacity of solar salt, and reduced the supercooling degree, demonstrating superior thermal properties.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Thermodynamics
Zhao Wang, Ling Li
Summary: The boiling heat transfer of a base fluid and nanofluid film on a graphene membrane was studied using molecular dynamics. The results show that nanoparticles act as a heat source to heat surrounding water molecules, enhancing boiling heat transfer, and the thermal conductivity at the interface increases with particle size.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Gabriel J. J. Olguin-Orellana, German J. Soldano, Jans Alzate-Morales, Maria B. Camarada, Marcelo M. M. Mariscal
Summary: Copper nanofluids (Cu NFs) have high thermal conductivity but are prone to oxidation, corrosion, and aggregation. Copper capped by graphene (Cu@G) nanoparticles can shield Cu NPs and exhibit improved thermal conductivity compared to Cu NFs. New Morse potentials were used to simulate the behavior of Cu@G NPs, and their thermal conductivity was evaluated using the Green-Kubo formalism, showing significant improvement compared to Cu NFs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Wagd Ajeeb, S. M. Sohel Murshed
Summary: This study investigates the pool boiling heat transfer performance of hybrid and mono nanofluids containing boron nitride and silicon dioxide nanoparticles. The results show that both types of nanofluids demonstrate improvements in critical heat flux and burnout heat flux compared to the base fluid, with the highest enhancement observed in a boron nitride-based mono nanofluid.
Article
Engineering, Chemical
Xu Ma, Yindong Song, Yang Wang, Shouguang Yao, Kambiz Vafai
Summary: In this study, novel hybrid nanoparticles were prepared using Ag modified functionalized GNP, and the boiling heat transfer properties of the nanofluids were investigated. The GNP-Ag hybrid nanofluids with a weight concentration of 0.001% exhibited the best heat transfer performance, with improved structural modification and wetting properties playing a crucial role in enhancing the heat transfer.
Article
Thermodynamics
Fengjiao Zhou, Liu Yang
Summary: A new model for the thermal conductivity of CNTs nanofluids has been established in this study, taking into account the discontinuity of carbon nanotubes in thermal conduction path and anisotropic characteristics, resulting in accurate predictions for TC.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Physical
Leton C. Saha, Gota Kikugawa
Summary: This study used molecular dynamics simulation to investigate the interfacial heat condition between a PEG self-assembled monolayer and water. The results showed that the thermal boundary conductance of the PEG SAM is higher than that of the alkane-based SAM traditionally used. Structural properties of the PEG SAM were found to greatly influence the TBC of the interface, rather than vibrational properties matching between SAM terminal and water.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Engineering, Chemical
Jianyang Zhou, Xiaoping Luo, Bolin He, Changzheng Li, Lizhe Liang, Zhixin Yin, Zhi Qun Tian
Summary: In this study, graphene was found to significantly enhance the heat transfer performance of nanofluids in minichannel heat sinks. Through a comprehensive evaluation method, the optimal graphene mass concentration and heat transfer coefficient were identified to achieve minimum energy consumption. The results suggest that the evaluation method has good universal applicability for assessing the heat transfer performance of minichannel heat sinks.
Article
Engineering, Mechanical
Zesheng Zhang, Lili Zhang, John Jasa, Mehrdad Negahban, George Gazonas
Summary: Short chains in poly-disperse systems play a central role in creating non-affine volume that accelerates ratcheting, while having no influence in short-chained mono-disperse systems.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Energy & Fuels
Ting Hu, Jingyi Zhang, Joelle Whyte, Benwei Fu, Chengyi Song, Wen Shang, Peng Tao, Tao Deng
Summary: The study presents a method using mesoporous crumpled graphene particles to achieve self-dispersible distribution within medium-temperature silicone oil, maintaining uniform dispersion under elevated temperatures.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Naser Ali
Summary: This study investigates the thermophysical properties and dispersion stability of graphene-based nanofluids, finding that the fabrication temperature, nanomaterial concentration, and surfactant ratio have an impact on the effective properties and stability of the suspension. The specific heat capacity is highly sensitive to the graphene and surfactant concentrations, while the preparation temperature affects the nanofluid viscosity and thermal conductivity.
Article
Materials Science, Multidisciplinary
Cuiqian Yu, Shuyue Shan, Shuang Lu, Zhongwei Zhang, Jie Chen
Summary: Through molecular dynamics simulations, the fundamental characteristics of second sound are explored in a transient heat conduction modeling in single-layer and multilayer graphene and graphite. The results demonstrate that second sound can carry more heat energy and maintain for a longer lifetime than ballistic pulse. The effects of thickness and temperature on second sound propagation are also investigated.
Article
Thermodynamics
Ben Chu, Feiyu Zheng, Cheng Fang, Ruitong Wang, Weizheng Cheng, Jinran Tao, Wanli Zhang, Peng Tao, Chengyi Song, Wen Shang, Jianguang Cao, Benwei Fu, Tao Deng
Summary: Boiling can induce self-assembly of nanomaterials in nanofluids for enhanced heat transfer. However, poor thermal stability at the boiling point limits the practical applications. This study demonstrates that crumpled graphene can remain uniformly dispersed and self-assemble to form a porous structure during boiling, leading to improved heat transfer efficiency.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Mathematics, Interdisciplinary Applications
Mayssaa Jbeili, Junfeng Zhang
Summary: Nanofluids, suspensions of metal or oxide nanoparticles in a fluid, have been extensively studied for their potential in enhancing heat transfer. In this article, a particle-resolved numerical model was presented to simulate nanofluids, considering the explicit interaction between nanoparticles and ambient fluid flows. Simulations were conducted under different conditions, and it was found that adding particles can improve conductive heat transfer but reduce convection contribution, leading to potential deterioration of the overall thermal performance. The model can be extended for future studies on nanofluids.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
Article
Chemistry, Multidisciplinary
Jingyi Zhang, Benwei Fu, Chengyi Song, Wen Shang, Peng Tao, Tao Deng
Summary: By developing stable EG nanofluids uniformly dispersed with low concentrations of monolayer ethanol-wetted graphene oxide nanosheets, this study successfully improved thermal conductivity and heterogeneous nucleation, resulting in reduced supercooling degree and shortened freezing time.
