Article
Engineering, Chemical
Ibtissem Elzemzmi, Khaoula Hidouri, Bechir Chaouachi, Hiba Akrout
Summary: This research focuses on the integration of Al2O3, CuO, and TiO2 nanofluids in different solar desalination configurations, demonstrating that the addition of nanofluids can significantly increase productivity. The concentration of nanoparticles plays a role in enhancing productivity, with different nanofluid types showing varying thermal conductivities. The study also indicates that theoretical models align well with experimental results, with Al2O3 nanofluids exhibiting the highest thermal conductivity compared to TiO2 and CuO.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Chemical
Yun Zhang, Xiaojie Xu
Summary: The study developed a Gaussian process regression model to investigate the statistical relationship among temperature, specific heat capacities of nanoparticles and base liquids, nanoparticle volume concentrations, and specific heat capacities of nanofluids. The model is accurate, stable, and applicable to a wide range of nanofluid compositions and temperatures, providing fast and low-cost estimations of specific heat capacities.
Article
Thermodynamics
Saeed Rubaiee, Syed Mohd Yahya, M. A. Fazal, Mohd Danish
Summary: This study investigates the thermal, optical, and suspension stability of graphene oxide nanofluid and its application in photovoltaic thermal systems. The results show that GO/EG:W nanofluid has higher thermal conductivity and stability compared to other nanofluids, making it more effective in enhancing the performance of photovoltaic thermal systems.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Lan Xu, Aboozar Khalifeh, Amith Khandakar, Behzad Vaferi
Summary: Nanofluids have been used in experimental studies to improve the performance of flat plate solar collectors (FPSC). However, the results regarding the effect of nanofluids on FPSC are often ambiguous and contradictory. This research develops a straightforward approach to predict the thermal efficiency of nanofluid-based FPSC and compares different machine learning models to determine the most accurate tool for this task, finding that LS-SVR performs the best.
Article
Physics, Multidisciplinary
V. Hari Haran, P. Venkataramaiah
Summary: This study examines the performance of a parabolic solar collector using Al2O3 water-based and ethylene glycol-based nanofluids with various volume concentrations. The experiment demonstrates that these nanofluids can significantly improve the thermal efficiency of the collector.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Chemistry, Multidisciplinary
Kamel Adnan, Kamel Guedri, Zehba Raizah, Elsayed Tag-Eldin, Waqas Ashraf, Umar Khan, Ahmed M. Galal
Summary: Heat transfer and energy storage are core challenges for industrialists and engineers. Nanofluids and hybrid nanofluids have been introduced as new heat transfer fluids, and a third generation called modified hybrid nanofluids (MHNs) has recently been developed. In this study, the energy storage efficiency of (Al2O3-CuO-Cu/H2O)(mhnf) and (Al2O3-CuO/H2O)(hnf) was investigated, revealing that (Al2O3-CuO-Cu/H2O)(mhnf) has higher thermal energy storage efficiency than traditional nanofluids and hybrid nanofluids. These findings provide new insights into heat transfer and can help address energy storage challenges in the modern technological world.
FRONTIERS IN CHEMISTRY
(2022)
Article
Thermodynamics
Hossain Md Fazle Rabbi, Ahmet Z. Sahin
Summary: This study examined the performance improvement of solar stills using hybrid nanofluids, which proved to be more effective than conventional hot water and nanofluids. The best results were achieved with the use of hybrid nanofluids, showing significant increases in desalinated water yield and energy efficiency. Factors such as water depth, fluid flow rate, temperature, and nanoparticle concentration played crucial roles in enhancing the system performance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(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
Chemistry, Physical
Estefania Torres, Ivan Carrillo-Berdugo, David Zorrilla, Jesus Sanchez-Marquez, Javier Navas
Summary: The study focused on utilizing CuO nanoparticles to improve the thermal properties of heat transfer fluids in CSP plants. Nanofluids prepared with lower sonication energy values demonstrated the highest stability, a 10% increase in heat transfer coefficient, and improvements in isobaric specific heat and thermal conductivity. Molecular dynamics simulations were used to analyze the enhanced thermal conductivity and the formation of a semi-rigid layer which could explain the increase in isobaric specific heat.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Environmental Sciences
Mohammad Shafiey Dehaj, Mehdi Ahmadi, Mostafa Zamani Mohiabadi
Summary: The study indicated that using metal oxide nanofluids can significantly improve the efficiency of heat pipe solar collectors, with a maximum efficiency of 83% achieved. Furthermore, increasing the mass concentration of metal oxide nanoparticles and volume flow rate can further enhance the efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Hallera Basavarajappa Marulasiddeshi, Praveen Kumar Kanti, Mehdi Jamei, Sajjal Basanna Prakash, Somalapura Nagappa Sridhara, Zafar Said
Summary: In this study, Al2O3 and CuO nanoparticles were synthesized using a novel sol-gel method, and water-based Al2O3 and Al2O3-CuO nanofluids were produced. The viscosity and thermal conductivity of the nanofluids were determined, and the results showed significant enhancements in both properties for the hybrid nanofluid compared to the Al2O3 nanofluid.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Ceramics
Dina H. A. Besisa, Emad M. M. Ewais, Hanan H. Mohamed
Summary: This work proposes a new high temperature composite material based on black Al2O3/CuO ceramics, which is produced with a simple and low-cost method. CuO is added to alumina to enhance its sinterability and properties for solar energy absorption. The study includes a detailed investigation of the material processing and evaluation of its phase composition, densification, and microstructural features. Thermal properties and mechanical durability are optimized to ensure the sustainability of the material. The results show that the addition of a small percentage of CuO to Al2O3 significantly enhances its densification, microstructure, thermal and mechanical properties. The composite with 10 wt% CuO exhibits the highest thermal conductivity, best thermal emissivity, lowest thermal expansion, outstanding thermal shock resistance, and mechanical durability. Therefore, Al2O3/CuO composites can be considered as a promising material for high temperature solar receivers.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
P. Ganesh Kumar, N. Thangapandian, V. S. Vigneswaran, S. Vinothkumar, B. Mouli Prasanth, Sung Chul Kim
Summary: The study investigates the effects of shot peening on heat transfer, exergy analysis, and pressure drop in a heat exchanger. The results show that nanofluids can significantly enhance the heat transfer performance and exergy efficiency of the heat exchanger.
Review
Energy & Fuels
Mahmoud Eltaweel, Ahmed A. Abdel-Rehim
Summary: This article discusses the importance of using solar energy as a clean and renewable source of energy, as well as the significance of stationary solar collectors in domestic applications. Nanofluids play a key role in improving the performance of collectors, and the article also explores the application of nanofluids in two circulation types and performance analysis equations.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Environmental Sciences
Babu Sasi Kumar Subramaniam, Arun Kumar Sugumaran, Muthu Manokar Athikesavan
Summary: This research investigates the use of solar energy in a solar dryer with thermal storage. The findings indicate that the energy output of the solar dryer, using waste engine oil and water as the working medium, is lower compared to groundnut, ginger, and turmeric crops. However, this research holds potential value in agriculture, particularly for vegetable drying.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Zhiqiang Li, Xiaoxiao Hu, Zhao-Yun Zeng, Yajiang Chen, Ai-Xi Chen, Xiaobing Luo
Summary: This work demonstrates how the current phase transition of atomic Bose-Einstein condensates in a trap can be controlled by applying an oscillatory driving field. The self-trapping effect in momentum space allows for a suppression of oscillations and a nearly constant directed current. Mean-field chaos serves as an indicator of the quantum phase transition. These findings are supported by an effective three-mode model.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinqin Ye, Yi Li, Jun Ding, Heng Yu, Xianqi Dai
Summary: Constructing van der Waals heterostructures is an efficient approach to enhance the properties and broaden the applications of two-dimensional materials. This study explores the structure, stability, electronic, and optical properties of BlueP/MoSSe heterostructures using density functional theory calculations. It is found that the bandgap and band edge of these heterostructures can be effectively modulated by strain and electric field.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Simone Anzellini, Silvia Boccato, Samuel R. Baty, Leonid Burakovsky, Daniele Antonangeli, Daniel Errandonea, Raffaella Torchio
Summary: The melting line of cobalt was investigated through experimental and theoretical methods, revealing a phase transition from hexagonal close-packed structure to face-centered cubic structure at high temperatures. The melting temperatures obtained from both methods showed good agreement and can be described by a Simon-Glatzel equation. Additionally, a thermal equation of state for the face-centered cubic phase of cobalt was determined.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jiajuan Qing, Shisheng Zhou, Jimei Wu, Mingyue Shao
Summary: This paper investigates the nonlinear chaotic vibrations of fractional viscoelastic PET membranes subjected to combined harmonic and variable axial loads. The viscoelasticity of PET membrane is characterized by the fractional Kelvin-Voigt model. The reliability of the numerical strategy is proved by comparing the results with available fractional systems and examples. The influence of system parameters on chaotic behaviors is described using bifurcation diagrams and detailed responses. This research provides a fundamental framework for controlling viscoelastic substrates in flexible manufacturing.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aly R. Seadawy, Syed T. R. Rizvi, Bazgha Mustafa, Kashif Ali
Summary: In this research, the complete discriminant system of polynomial method is used to analyze the dynamic characteristics of the cubic-quintic nonlinear Schrodinger equation with an additional anti-cubic nonlinear term, with a focus on the introduction of various optical solitons and wave structures. The analysis illustrates the importance of the polynomial method and provides dynamic results for the solutions.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Ruihang Huang
Summary: This study utilized bibliometric analysis to examine the development of multi-scale calculation of carbon nanotubes. Using CiteSpace III software, 1253 relevant articles from the SCI Expanded database were analyzed to identify research trends in this field. The findings revealed significant progress in the research of multi-scale calculation of carbon nanotubes from 1999 to 2023. The analysis of keywords, literature co-citation network, and keyword cluster network provided valuable insights into the knowledge base, important research results, and research hotspots in this field. Additionally, the study predicted future hot research directions using keyword breakout analysis. The research provides profound insights and important guidance for researchers and policymakers in the field of multi-scale calculation of carbon nanotubes to promote further innovation and development.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaohua Zhou, Erhu Zhang, Shumin Zhao, Lei Zhang
Summary: A theoretic model is proposed to study the adhesion behavior of a vesicle adhering inside another vesicle in 2-D case. The model investigates the equilibrium shape equations and boundary conditions, and reveals the phase diagram and critical adhesion condition in different situations.
RESULTS IN PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xin Yi, Jia-Cheng Huo, Yong-Pan Gao, Ling Fan, Ru Zhang, Cong Cao
Summary: The paper introduces an iterative quantum algorithm based on quantum gradient descent to solve combinatorial optimization problems, verifying the effectiveness and robustness of the algorithm through numerical simulations and comparison with other algorithms. Experimental results on a real quantum computer also demonstrate the feasibility and performance of the algorithm.
RESULTS IN PHYSICS
(2024)