Article
Thermodynamics
Mohamad Noor Izwan Johari, Irnie Azlin Zakaria, W. H. Azmi, W. A. N. W. Mohamed
Summary: The study found that using Al2O3-SiO2 hybrid nanofluids as a cooling liquid for PEMFC instead of conventional ethylene glycol can significantly improve thermal conductivity and electrical conductivity, thereby enhancing energy conversion efficiency.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Saifuddin Khalid, Irnie Zakaria, W. H. Azmi, W. A. N. W. Mohamed
Summary: The study demonstrates that in PEM fuel cell applications, the 10:90 ratio of Al2O3-SiO2 hybrid can achieve optimal performance, with thermal and electrical conductivity decreasing as the percentage of Al2O3 increases, while viscosity performance exhibits the opposite trend. Considering the dominance of thermal properties over viscosity and electrical conductivity, the 10:90 ratio is the most suitable for implementation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Physical
Abdul Rehman, Sana Yaqub, Majid Ali, Hassan Nazir, Nadia Shahzad, Sehar Shakir, Rabia Liaquat, Zafar Said
Summary: This study investigates the influence of eight surfactants on the properties of hybrid nanofluids containing Aluminum oxide (Al2O3) and Titanium dioxide (TiO2). The results show that polyvinylpyrrolidone (PVP) exhibits the highest stability among all surfactants, while polyethylene glycol (PEG) shows the highest viscosity enhancement. Additionally, all the nanofluids exhibit Newtonian behavior. The study emphasizes the potential of PVP as a surfactant for long-term heat transfer applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
W. A. Shah, X. Luo, B. Rabiu, B. Huang, Y. Q. Yang
Summary: Graphene/CNTs-reinforced alumina ceramic composites were prepared using the spark plasma sintering method at 1500 degrees C, with a study on the distribution behaviors of reinforcements and mechanical properties. Various toughening mechanisms were observed, and the thermal conductivity of the composites was discussed in relation to grain size. The experimental results provided insights into the properties and behavior of these nanocomposites.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Vignesh Vicki Wanatasanappan, Munirah Rezman, Mohd Zulkifly Abdullah
Summary: This study investigates the thermophysical properties of vegetable base oils suspended with Al2O3-TiO2 nanoparticles. The results show that palm oil-based hybrid nanofluids exhibit superior thermal conductivity and viscosity, making them suitable for enhancing the performance of insulation oil in the electrical power sector.
Article
Chemistry, Physical
Wenshuang Tian, Yanqiong Bao, Guangzhao Qin, Lang Liu, Xiong Zheng
Summary: This study investigates the thermal conductivity of carbon nanotube (CNT) nanofluids and reveals the influence mechanism of functionalization on their thermal transport ability.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
S. O. Giwa, Mohsen Sharifpur, Josua P. Meyer, Somchai Wongwises, Omid Mahian
Summary: This study investigated the influence of particle mass ratios on the thermal properties of hybrid nanofluids, revealing that temperature increase significantly reduces the viscosity of hybrid nanofluids while the particle mass ratio positively impacts the electrical conductivity. Additionally, new correlations were proposed to accurately estimate the viscosity and electrical conductivity of the hybrid nanofluids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Energy & Fuels
Praveen Kumar Kanti, Prabhakar Sharma, Manoor Prakash Maiya, Korada Viswanatha Sharma
Summary: This paper investigates the dispersion stability and thermophysical characteristics of water-based alumina (Al2O3), graphene oxide (GO), and their hybrid nanofluids (HNF). The properties of the nanofluids were analyzed, including thermal conductivity (TC) and viscosity (VST), as well as the effect of different surfactants on stability. The study found that GO had higher TC enhancement compared to Al2O3 NF, and the addition of GO increased the TC and VST of HNF. Regression equations were developed to predict the VST and TC of HNFs. Machine learning approaches were also used to model-predict the thermophysical properties of HNFs with high prognostic efficiency.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Green & Sustainable Science & Technology
Waqar Ahmed, S. N. Kazi, Z. Z. Chowdhury, Mohd Rafie Bin Johan, Shahid Mehmood, Manzoore Elahi M. Soudagar, M. A. Mujtaba, M. Gul, Muhammad Shakeel Ahmad
Summary: The research demonstrates that novel ZnO + Al2O3+TiO2/DW based ternary composite nanofluids exhibit enhanced thermal conductivity and heat transfer coefficient at different concentrations, making them suitable for nano coolant applications and energy management in industrial settings.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Talib K. Murtadha
Summary: The main purpose of this study was to cool the photovoltaic panels using nanofluids in order to improve their performance. The study used a 2 wt% Al2O3/TiO2 hybrid nanofluid coolant and compared its effects with those of previous studies that used pure Al2O3 and TiO2 nanoparticles. Three photovoltaic panels were used, one cooled with the hybrid nanofluid, one cooled with water, and one without cooling. The results showed that cooling with the hybrid nanofluid significantly increased the output power and electrical energy efficiency compared to the other cooling methods.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Samah Hamze, Nawal Berrada, Alexandre Desforges, Brigitte Vigolo, Jerome Gleize, Jaafar Ghanbaja, Thierry Mare, David Cabaleiro, Patrice Estelle
Summary: This study investigates the dynamic viscosity of purified multi-walled carbon nanotubes water and water-propylene glycol-based nanofluids at different temperatures, finding that they behave as Newtonian fluids at low concentrations and exhibit shear-thinning behavior at higher concentrations. The presence of aggregates and their sizes observed optically are compared to the modified Maron-Pierce model to determine the viscosity enhancement of nanofluids with MWCNT loading.
HEAT TRANSFER ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Helio Ribeiro, Jose Jaime Taha-Tijerina, Ofelia Gomez, Ever Acosta, Gabriel M. Pinto, Lorena R. C. Moraes, Guilhermino J. M. Fechine, Ricardo J. E. Andrade, Jefferson Reinoza, Victoria Padilla, Karen Lozano
Summary: In this study, nanofluids based on vegetal oil with different weight percentages of carbon nanotubes (CNT), hexagonal boron nitride (h-BN), and a hybrid of both (h-BN@CNT) were produced. The effects of these nano-additives on the thermal conductivity and rheological properties of the nanofluids were investigated. The results showed that the fluids produced with 0.5 wt.% of the hybrid nanomaterials exhibited an increase in thermal conductivity of up to 39%. Furthermore, it was found that the presence of CNT affected the rheological properties of the fluid, while h-BN changed the fluid's Newtonian behavior.
Article
Chemistry, Physical
Ming-yan Ma, Yu-ling Zhai, Zhou-hang Li, Pei-tao Yao, Hua Wang
Summary: This study investigated the impact of different sizes of nanoparticles on the rheological properties of hybrid nanofluids, revealing that volume fraction and nanoparticle size both play significant roles in determining viscosity. Synergistic effects in hybrid nanofluids were found to influence nanoparticle arrangement, allowing for the manipulation of viscosity by adjusting nanoparticle size at different volume fractions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
John Shelton, Nanda K. Saini, Syed M. Hasan
Summary: The present study experiments on the rheological properties of Al2O3-TiO2/MO hybrid nanofluids and finds that the flow behavior of the hybrid nanofluids tends to be more Newtonian compared to conventional nanofluids. The study also observes that the ratio of the hybrid mixture of constituent nanoparticle components affect the rheological characteristics of the nanofluids in an intuitive way.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Thermodynamics
Gokberk Yalcin, Semiha Oztuna, Ahmet Selim Dalkilic, Somchai Wongwises
Summary: This study investigates the thermal properties of water-based ZnO-SiO2 hybrid nanofluids and confirms their potential applications in various thermal systems by experimentally determining thermal conductivity and dynamic viscosity values. The results show that ZnO-SiO2 hybrid nanofluids can enhance system heat transfer rate and efficiency, reduce pressure drop, and power consumption, indicating promising prospects for their use in different thermal applications.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Mohammad Hemmat Esfe, Saeed Esfandeh
Summary: The research focused on the rheological behavior of MWCNT (50%)-ZnO (50%)/5W50 nanofluid at temperatures ranging from 5 to 55 degrees C, different solid volume fractions (SVFs) between 0 and 1%, and shear rates (SRs) of 666.5-10,664 s(-1). The study concluded that an SVF of 0.05% is the most suitable for enriched nano-engine oil with the lowest viscosity influence level and sensitivity. Viscosity sensitivity analysis showed that the highest sensitivity occurs at higher temperatures and SVFs of 1%.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Civil
Calvin Smith, Blair Hill, Greg Wheatley, Reza Masoudi Nejad, Nima Sina
Summary: The objective of this paper is to calculate the fatigue reliability of the newly designed rear suspension system for the JCU motorsports FSAE competition. The paper focuses on the design stages, theoretical and numerical analysis, and the fabrication of suspension components. The results show that reducing inspection intervals and increasing the number of replaced components can maintain the expected reliability of the system.
Article
Energy & Fuels
Behzad Heidarshenas, Nima Sina, A. S. El-Shafay, S. Saleem, Mohsen Sharifpur
Summary: This paper studies a method of using a lithium battery system to heat an office building. By placing the battery packs inside the air duct, the batteries can be cooled and the heat can be directed into the building. Among different models, the one with three outlets can reduce heating energy consumption, but it also results in a larger pressure drop.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Behzad Heidarshenas, Nima Sina, S. Saleem, A. S. El-Shafay, Mohsen Sharifpur
Summary: This research numerically simulates the use of cylindrical li-ion battery packs inside an air duct to heat a guard room. The study shows that increasing airflow velocity leads to higher pressure drop and heat transfer coefficient, but lower outlet temperature and maximum battery temperature. The number of outlets can be adjusted to control the heating effect of the system.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
Alireza Yazdani, Hossein Aberoumand, Yousef Farhadi, Abolfazl Ansari, Sadegh Aberoumand, Nader Karimi, Masoud Afrand, Goshtasp Cheraghian, Seyed Masoud Parsa, Hafiz Muhammad Ali
Summary: The main aim of this paper is to explore the effects of different nanofluid preparation methods on the performance of photovoltaic/thermal (PV/T) systems. The study found that nanofluid prepared using the one-step method had higher stability and improved energy performance compared to the two-step method. Increasing the concentration of nanofluid linearly increased system efficiencies, with the highest enhancement rate observed from 1% to 3% for two-step prepared nanofluid. It was also observed that system performance was higher in the turbulent-flow regime for two-step prepared nanofluid compared to the laminar-flow regime, which was attributed to the stability of the nanofluid.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Construction & Building Technology
Saeed Aghakhani, Ahmadreza Ghaffarkhah, Mohammad Arjmand, Nader Karimi, Masoud Afrand
Summary: This study investigates the thermal performance of a wall with phase change materials using numerical simulations. The findings show that the addition of nanoparticles reduces the melting and freezing time of the phase change materials, and lowers the wall temperature. Increasing the number of cavities speeds up the charge and discharge processes.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Amin Shahsavar, Abbas Goodarzi, Ighball Baniasad Askari, Mehdi Jamei, Masoud Karbasi, Masoud Afrand
Summary: This paper presents a 3D numerical analysis of a battery thermal management system (TMS) with Phase Change Material (PCM). The study found that setting an appropriate tip clearance (TC) between the annular fins and the alumina enclosure improves PCM free convection and enhances the heat transfer rate.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Engineering, Multidisciplinary
Fatih Selimefendigil, Hakan F. Oztop, Masoud Afrand
Summary: The shape effects of TEG mounted vented cavities on the performance characteristic during alumina-water nanofluid convection are numerically assessed. L-shaped cavity achieves the highest hot side temperature, followed by U, T, and R-shaped cavities. The power increases with higher opening ratio and Reynolds number.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Energy & Fuels
Mohammadreza Baghoolizadeh, Afshin Ahmadi Nadooshan, Seyed Amir Hossein Hashemi Dehkordi, Mohammad Rostamzadeh-Renani, Reza Rostamzadeh-Renani, Masoud Afrand
Summary: This study investigates the impact of using photovoltaic shadings on energy consumption and production in buildings. The results show that the optimal tilt angle for maximum sunlight reception is 19.6 in a southern direction. The use of solar shadings can reduce electricity consumption by approximately 4 to 11%, 1 to 4%, and 10 to 22% for an annual period, winter and summer season, respectively.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Mechanical
Reza Masoudi Nejad, Nima Sina, Danial Ghahremani Moghadam, Ricardo Branco, Wojciech Macek, Filippo Berto
Summary: This paper investigates the fracture behavior and fatigue crack growth rate of the 2024-T351 aluminum alloy. Through experimental study and artificial neural network prediction, the best welding parameters and neuron numbers are determined, and the results of different methods are compared. The findings are of great significance for improving the quality of aluminum alloy welding.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Environmental Sciences
Rasool Kalbasi, Bijan Samali, Masoud Afrand
Summary: Adding phase change materials (PCMs) into building envelopes is an effective way to reduce energy consumption and CO2 emissions. However, the presence of phase change in PCMs may not always lead to better energy savings. Installing PCMs near the uppermost layer can enhance energy-saving performance.
Article
Engineering, Multidisciplinary
Shi Fuxi, Nima Sina, S. Mohammad Sajadi, Mustafa Z. Mahmoud, Anas Abdelrahman, Hikmet S. Aybar
Summary: Numerical simulation and artificial neural network modeling of turbulent flow inside a pipe equipped with spring turbulators was conducted to predict heat transfer rates and evaluate fluid performance, with varying factors such as Reynolds number and volume fraction considered.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2022)
Article
Thermodynamics
Saeed Aghakhani, Ahmad Hajatzadeh Pordanjani, Masoud Afrand, Ayoob Khosravi Farsani, Nader Karimi, Mohsen Sharifpur
Summary: This paper presents a thermodynamic analysis of a mini circular heatsink, investigating different types of heatsinks and their performance. The results show that copper heatsinks have better cooling performance than aluminum heatsinks. Additionally, the study found that the addition of nanoparticles to the working fluid has a minimal impact on the thermodynamic performance of the system. Increasing the Reynolds number of the fluid flow reduces the exergy losses and improves the first and second law efficiencies.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Chemistry, Physical
Ahmad Hajatzadeh Pordanjani, Saeed Aghakhani, Masoud Afrand, Ping Zhang, Rongjiang Tang, Omid Mahian, Somchai Wongwises, Mohammad Mehdi Rashidi
Summary: This study investigates lithium-ion battery packs made of compact cylindrical Li-ion batteries. The thermal and electrochemical equations governing the batteries are solved using the finite-element method, coupled with the airflow around the batteries. The results show that better cooling enhances the cells' long-term performance, and increasing the distribution of the batteries at the center improves cooling and reduces temperature gradients.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Mohammad Hemmat Esfe, Mahdi Mollamahdi
Summary: The study investigates the rheological behavior of ZnO-MWCNT/10W40 nanofluid and proposes a mathematical relation to calculate the NF viscosity. Results show a direct relationship between dynamic viscosity and VF, and an inverse relationship with temperature and SR. Sensitivity analysis indicates that viscosity is primarily dependent on temperature.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
