Article
Thermodynamics
Zafar Said, Shek M. A. Rahman, Maham A. Sohail, Ammar M. Bahman, Mohammad A. Alim, Saboor Shaik, Ali M. Radwan, Ibrahim I. El-Sharkawy
Summary: This research focuses on utilizing nano-refrigerants and nanolubricants to enhance heat transfer and address global energy security and environmental concerns. Nanofluids have shown significant potential in cooling, air conditioning systems, and heat transfer equipment. Comprehensive understanding of parameters like thermal conductivity and viscosity aims to improve the overall efficiency of refrigeration systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Yangjie Wang, Jige Chen
Summary: This study reveals a crossover of wave-packet dynamics from a phonon-dominated to a soliton-dominated state in a quasi-one-dimensional molybdenum disulfide (MoS2) sheet at high temperatures below its melting point. The anomalous energy transport exhibits a universality class with a thermal conductivity divergence exponent alpha = 2/5 at a finite length scale within 2000 nm when solitons are excited above 600 K, indicating a peculiar solitonlike contribution to thermal conduction in low-dimensional crystalline solids at high temperatures.
Review
Physics, Multidisciplinary
Haiyan Yu, Haochun Zhang, Jinchuan Zhao, Jing Liu, Xinlin Xia, Xiaohu Wu
Summary: This paper summarizes the development of calculation models for the equivalent thermal conductivity of micro/nano-porous polymeric materials in recent years. It points out that there are few studies on the heat transfer of micro/nano-porous polymers, especially on special heat transfer mechanisms at the micro/nanoscale. Further research is needed on aspects such as micro-scale thermal radiation, heat transfer characteristics of particular morphologies at the nanoscales, and heat transfer mechanism and impact factors of micro/nano-porous polymers.
FRONTIERS OF PHYSICS
(2022)
Article
Thermodynamics
Jose Aguiar Santos Junior, Jose Ricardo Ferreira Oliveira, Jefferson Gomes do Nascimento, Ana Paula Fernandes, Gilmar Guimaraes
Summary: This paper proposes an experimental method to simultaneously measure the thermal conductivity and thermal diffusivity of solid conductive and non-conductive materials. The method applies two different thermal models and utilizes Bayesian inference to solve the inverse problem, ultimately determining the thermal properties of the samples.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
Kevin Eduardo de Conde, Alfredo Carlos do Prado, Ezio Castejon Garcia, Elisan dos Santos Magalha
Summary: This study proposed an alternative experimental methodology to determine the thermal conductivity of anisotropic materials and validated the technique by comparing thermal conductivities of isotropic materials. The analysis investigated the anisotropic thermal conductivity coefficients of Celeron-C1001 using experimentally assessed temperature fields and heat fluxes.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Review
Thermodynamics
Sudhir Kumar Pathak, Rajat Kumar, Varun Goel, A. K. Pandey, V. V. Tyagi
Summary: This study summarizes the recent advancements in the thermal performance of nanofluid-charged heat pipes used for various thermal management applications. It discusses the preparation, characterization, and stability enhancement methods of nanofluids. The study found that a porous coating on the wick surface contributes to a decrease in thermal resistance, and nanofluid-charged heat pipes perform best at a filling ratio of 50-70%. The heat transfer coefficient of heat pipes increases by 20-25% with nanofluids compared to distilled water. The higher thermal conductivity and increased nucleation sites of nanofluids improve the thermal efficiency of heat pipes.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
H. Haddad, W. Leclerc, G. Alhajj Hassan, A. Ammar, C. Pelegris, M. Guessasma, E. Bellenger
Summary: This study discusses the numerical approach using the Discrete Element Method to study heat transfer in composite materials, employing a hybrid lattice model based on the equivalence between a particulate domain and a continuous medium. The model is validated and compared with numerical and experimental results to showcase its relevance in evaluating temperature and heat flux density fields.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Engineering, Electrical & Electronic
B. Pan, D. Zhu, M. Zhang
Summary: This paper introduces a flexible thermal sensor that can be used on robotic fingers to achieve rapid measurement of thermal conductivity and thermal diffusivity for different materials. By a single touch of the robot finger, the thermal properties of an object can be measured in less than 2 seconds.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
News Item
Optics
Yuya Morimoto
Summary: A transmission electron microscopy technique allows the recording of movies capturing the dynamic behavior of optical near-fields with a temporal resolution surpassing the oscillation of optical electric fields.
Article
Materials Science, Multidisciplinary
Wei Zhang, Yangyu Guo, Shi-Yun Xiong, Hong-Liang Yi
Summary: This study investigates the frequency-dependent heat transport characteristics in mass disordered Si1-xGex nanowires using the nonequilibrium Green's function method. The results reveal the coexistence of ballistic transport, diffusive transport, and Anderson localization in SiGe alloyed nanowires. Ballistic phonons are observed at low frequencies, with a shift to lower frequencies as the Ge concentration increases.
Article
Nanoscience & Nanotechnology
N. Mori, A. Komada, G. Mil'nikov
Summary: The thermal conductance of one-dimensional mass-disordered systems is calculated using linear and quadratic dispersion models. Different dispersion models exhibit different thermal diffusion behaviors, with super-diffusive nature for the linear model and normal-diffusion behavior for the quadratic model.
Article
Nanoscience & Nanotechnology
Xiaofang Li, Meng An, Peide Li, Jianwen Miu, Qiang Wu, Fenghua Zheng, Juantao Jiang, Hongqiang Wang, Youguo Huang, Qingyu Li
Summary: The study demonstrates that utilizing phenylamine-functionalized graphene deposited on a copper substrate shows significantly higher thermal conductivity, over 30.8% higher than the pristine graphene-copper composite. This innovation provides another solution to establish a conjugated structure between graphene and copper, holding significance in thermal conduction applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Multidisciplinary Sciences
Xin Huang, Yangyu Guo, Yunhui Wu, Satoru Masubuchi, Kenji Watanabe, Takashi Taniguchi, Zhongwei Zhang, Sebastian Volz, Tomoki Machida, Masahiro Nomura
Summary: This study experimentally confirms the existence of phonon Poiseuille flow in graphitic systems, providing important insights into phonon hydrodynamics and advances in heat manipulation applications.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Multidisciplinary
Imtiaz Ali Shah, Sardar Bilal, Ali Akgul, Merve Tastan Tekin, Thongchai Botmart, Heba Y. Zahran, Ibrahim S. Yahia
Summary: The prime motive of this study is to investigate the dispersion characteristics of single wall carbon nanotubes in water-based hybrid nanoliquid. An innovative thermal conductance model is developed considering factors such as nanolayer formation and particle size. The study addresses the fluid transport mechanism, heat and mass transport mechanism, and the porous walls of the channels. The results are obtained through mathematical simulations and computational analysis, and are compared with existing studies.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Ya-nan Li, Ping Wu, Shiping Zhang, Yili Pei, Jinguang Yang, Sen Chen, Li Wang
Summary: The study investigates the enhancement of thermoelectric performance of Ca3Co4O9 ceramic samples by adding nano-MoSi2 particles. The experimental results demonstrate that the appropriate addition of MoSi2 particles can increase the carrier concentration, enhance the electrical conductivity and Seebeck coefficient of Ca3Co4O9, and effectively reduce the thermal conductivity. The ZT value is increased by 44.4%.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Elham Heidari, Salman Movahedirad, Mohammad Amin Sobati
Summary: This study investigates binder evaporation as a significant microscale phenomenon in fluidized bed wet granulation. It models the evaporation of a single droplet, a sessile droplet, and a liquid bridge, taking into account the effects of operational conditions and liquid/particle properties. The results show that higher relative velocity and smaller equilibrium contact angle increase the evaporation rate, while increasing the length of the binder bridge reduces the rupture time.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Ahmad Mortezaee, Salman Movahedirad, Mohammad Amin Sobati
Summary: Oxidative desulphurization of heavy fuel oil faces challenges such as gum formation and waste hydrocarbons. Gum formation increases as the hydrogen/carbon ratio of the diluting solvents decreases. It is caused by polymer formation reactions induced by peroxide radicals. A simple and efficient extractive desulphurization method using dimethylformamide as the solvent is proposed, achieving a high desulphurization rate.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Mohammad Jahandar Lashaki, Salman Movahedirad, Ahmad Rahbar-Kelishami
Summary: The growing importance of metal separation methods and the shortcomings of conventional solvent extraction techniques have led to increasing attention towards the need for new technology. Microfluidics is considered a suitable choice due to its high mass and heat transfer rate, low material consumption, and small size. This study focused on the solvent extraction of chromium (III) ion using a microchannel, investigating the effect of operating parameters and obtaining optimal extraction conditions. The results showed that microfluidic extraction had better mass transfer performance, and CFD simulations agreed well with experimental results in terms of internal flow and extraction efficiency.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Engineering, Chemical
M. Jahandar Lashaki, Ali Akbar Sarbanha, Salman Movahedirad
Summary: This study investigated the particle flow patterns and the impact of the secondary gas nozzle location in a two-zone pseudo-2D fluidized bed with lateral gas injection. At low excess gas flow rates, particles moved downward at the bed center and upward near the walls when the nozzle was in the middle, while the reverse movement trend was observed when the nozzle was at the top. At higher gas velocities, particles moved upward at the bed center and downward near the walls for both nozzle locations. The presence of the nozzle in the middle reduced the formation of large bubbles.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Energy & Fuels
Ahmad Reza Mahdavi, Mohammad Amin Sobati, Salman Movahedirad
Summary: This study investigated the extractive desulfurization of model diesel fuel in a micro-channel device using different deep eutectic solvents. The results showed that sulfur removal, slug length, specific interfacial area, and volumetric mass transfer coefficient were significantly influenced by the type of deep eutectic solvent used. The study achieved high sulfur removal efficiency and volumetric mass transfer coefficient in the micro-channel system.
Article
Engineering, Chemical
Saeed Ghasemzade Bariki, Movahedirad Salman, Majid Ghojavand
Summary: Polycaprolactone nanoparticles (NPs) were produced using a co-flow glass capillary device, with sizes of 990 nm at a continuous phase velocity of 0.05m and 426 nm at a continuous phase velocity of 0.2m/s. The droplet formation process in the co-flow microchannel was simulated using computational fluid dynamics (CFD). A cut-off value of 0.81 for the dispersed phase volume fraction was proposed to determine droplet size. A scenario for NP formation from micro-droplets was expressed. Additionally, a dimensionless exponential form correlation for droplet size estimation was proposed based on 27 CFD simulations. The results showed that increasing the continuous phase velocity led to the formation of more small NPs, and the ratio of micro-droplets to NPs size was between 735 and 755.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Seyed Mostafa Tabatabaei, Salman Movahedirad, Mohammad Amin Sobati
Summary: In this study, extractive desulfurization of stabilized natural gas condensate with initial sulfur content of 1800 ppmw was conducted using a glass microchannel with an inner diameter of 800 μm. Dimethyl formamide (DMF) was selected as the solvent based on different solvent selection criteria. The hydrodynamics and desulfurization efficiency were significantly affected by the fuel to solvent flowrate ratio, with slug flow regime observed within the examined flowrate. The maximum desulfurization efficiency of 66.31% was achieved at a flowrate of 1 mL/min and a solvent-to-fuel flow ratio of 1:1, which corresponded to the highest value of specific surface area of slugs. The best desulfurization result was obtained with five cycles of extraction with fresh solvent, reducing the sulfur content of the treated natural gas condensate below 200 ppmw.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Review
Engineering, Environmental
Faezeh Mirshafiee, Salman Movahedirad, Mohammad Amin Sobati, Reyhaneh Alaee, Sasan Zarei, Hamed Sargazi
Summary: Desulfurization is crucial in oil refining to mitigate the harmful effects of sulfur compounds. Naphtha, a key middle distillate, is extensively used as a fuel for automotive, engine, and jet-B applications. Hydrodesulfurization (HDS) is the conventional method employed to remove sulfur, but oxidative desulfurization (ODS) is gaining attention due to its mild reaction conditions and absence of hydrogen requirement. While ODS of diesel has been extensively investigated, limited studies have focused on ODS of naphtha. Understanding the challenges and optimizing ODS for naphtha, particularly in mini-refinery applications, is essential. This study comprehensively examines naphtha cuts, ODS mechanism, classification and comparative analysis of different ODS methods, various oxidants/catalysts, and kinetics of ODS reaction. Additionally, the impact of temperature, pH, catalyst content, and oxidation time on desulfurization efficiency is investigated, along with discussion on research gaps and suggestions for future studies in the field of ODS of naphtha.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Multidisciplinary Sciences
Saeed Ghasemzade Bariki, Salman Movahedirad
Summary: This study numerically investigates the formation of core/shell microdroplets with uniform size in co-flow microchannels. By adjusting the physical properties and velocity of three immiscible fluids, five main flow patterns are observed. The study provides a correlation for shell thickness and establishes regime transition criteria based on dimensionless variables.
SCIENTIFIC REPORTS
(2022)
Article
Mathematics
Mohammad Soleimani Amiri, Rizauddin Ramli, Ahmad Barari
Summary: This paper presents an optimized adaptive control system for a wearable lower-limb rehabilitation exoskeleton, which demonstrates efficient performance and robustness in real-time joint trajectory tracking.
Article
Green & Sustainable Science & Technology
Meysam Gholamian, Faranak Manteghi
Summary: Modified date tree fiber with MgO particles has the ability to remove nitrate ions from wastewater. The optimum pH value for maximum adsorption is 5. The nano-adsorbent shows good regeneration and reproducibility after four cycles of adsorption and desorption.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Multidisciplinary Sciences
Amir Kazemi, Fatemeh Moghadaskhou, Mahyar Ashourzadeh Pordsari, Faranak Manteghi, Azadeh Tadjarodi, Ahad Ghaemi
Summary: The excessive release of greenhouse gases, especially carbon dioxide (CO2) pollution, has resulted in significant environmental problems all over the world. CO2 capture technologies offer a very effective means of combating global warming, climate change, and promoting sustainable economic growth. UiO-66-NH2 synthesized by the novel sonochemical method has shown high CO2 adsorption capacity and durability.
SCIENTIFIC REPORTS
(2023)
Article
Computer Science, Theory & Methods
Mohammad Soleimani Amiri, Rizauddin Ramli
Summary: This paper presents a visual-based multi-stage error tolerance navigation algorithm using tag-based detection to localize and maneuver drones. The proposed navigation system, based on a closed-loop control system and an APID controller, shows satisfactory performance in simulated complex environments.
INTERNATIONAL JOURNAL OF ADVANCED COMPUTER SCIENCE AND APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Soleimani Amiri, Rizauddin Ramli, Norazam Aliman
Summary: The aim of this research is to develop a multi-joint rehabilitation robot using the Lyapunov Adaptive and Swarm-Fuzzy Logic Control strategy. The experiment shows that this strategy has superior performance in trajectory tracking.
Article
Computer Science, Artificial Intelligence
Mohammad Soleimani Amiri, Rizauddin Ramli
Summary: This paper presents a method for optimizing the PID controller using the ABBO algorithm, and experimental results confirm the applicability of this method in lower limb exoskeleton gait training.
TURKISH JOURNAL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCES
(2022)
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)
