Article
Engineering, Mechanical
Satish C. Sharma, Adesh Kumar Tomar
Summary: The study focuses on utilizing magneto-rheological fluid and micro-grooves to enhance the performance and stability of bearing systems, which is expected to assist in the design and analysis of bearing systems.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Thermodynamics
Ruhang Zhang, Jianhua Liu, Liang Zhang
Summary: The study investigates the two-phase flow boiling heat transfer with ammonia in a horizontal smooth mini-tube and finds that the flow boiling heat transfer for ammonia is more dependent on convective boiling. Additionally, correlations for boiling heat transfer and frictional pressure drop were updated based on the experimental and comparative results.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2021)
Article
Engineering, Mechanical
A. L. Sriram Sudhan, A. Brusly Solomon, I. Darwin Immanuel
Summary: This study presents a comparative heat transfer performance of an internally grooved anodized thermosyphon with eco-friendly refrigerants. The anodization process improved the heat transfer coefficient of the grooved thermosyphon by a significant percentage under specific conditions.
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Pongjet Promvonge, Sompol Skullong
Summary: The article focuses on enhancing the thermohydraulic performance of a solar heat exchanger duct with combined V-shaped baffle-and-groove vortex generators. Experimental results show that using the flapped-baffle and groove VG devices can achieve maximum heat transfer and friction effects, especially for the VU case.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Review
Energy & Fuels
Qi Fan, Lin Wu, Yan Liang, Zhicheng Xu, Yungeng Li, Jun Wang, Peter D. Lund, Mengyuan Zeng, Wei Wang
Summary: Solar evaporation of seawater using micro-nano porous structures in the photothermal layer shows enhanced solar energy absorption, heat energy management, and water transportation capabilities. Challenges identified in current research include the impact of pore structure on evaporation mechanisms, consistency of thermal and flow fields in pores, stability and salt precipitation issues. Further exploration of these issues can accelerate the development and practical applications of interfacial solar evaporation systems with micro-nano structures.
Article
Thermodynamics
Ya'nan Zhao, Lingjiao Wei, Jinghui Cai, Jingtao Liang
Summary: This research experimentally studied ammonia-charged micro heat pipe arrays and demonstrated that ammonia could significantly enhance the energy systems based on micro heat pipe arrays for various applications by improving heat transfer capability and enabling energy saving and efficient utilization.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Pingyang Wang, Xinglin Zhao, Zhenhua Liu
Summary: A new passive enhanced heat transfer technology is proposed for compact heat exchangers in supercritical LNG production by using circumferential micro-grooves on the top and bottom walls of rectangular channels. Numerical simulations were conducted to optimize the dimensions of the micro-grooves and study the heat transfer and flow characteristics of LNG. The effects of working fluid temperature, mass flow, and inlet pressure on heat transfer coefficient and friction factor were investigated, and the heat transfer mechanism near the micro-grooves was analyzed.
JOURNAL OF THERMAL SCIENCE
(2023)
Article
Thermodynamics
Atul Ranjan, Israr Ahmad, Rinku Kumar Gouda, Manabendra Pathak, Mohd Kaleem Khan
Summary: This study reports the creation of Cu(OH)2 nanoneedles on a copper surface using an anodization process, which can enhance critical heat flux (CHF) limit in pool boiling applications by improving surface wettability and wickability. Results show that the anodized surface requires higher wall superheat for nucleation and exhibits a higher CHF value compared to the plain surface.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
Hanyu Jin, Qiang Wu, Shuai Wang, Yurong He
Summary: In this study, the mass and heat transfer behaviors of ellipsoid wet particles in a fluidized bed dryer were investigated using the CFD-DEM method. The heat transfer mechanisms caused by contact, convection, and liquid bridge were analyzed. The study found that a reduction in liquid content weakens the heat flow between particles, and the agglomeration of non-spherical particles during the drying process leads to a lower drying rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuewei Jiang, Hai Tang, Ying Liu, Lixian Lian
Summary: By fabricating multi-layer wick heat pipes, the heat transfer performance in the anti-gravity direction was effectively improved, with a higher critical heat load compared to traditional homogeneous wick heat pipes. This will expand the applications of multi-layer wick heat pipes in terrestrial environments.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Manish Kumar Mohit, Rajesh Gupta
Summary: This paper investigates the thermal and flow characteristics in a microchannel with pin fins through numerical simulation. The results show that heat transfer increases significantly with an increase in fin height and Reynolds number. However, the influence of different fin heights on heat transfer differs after a certain Reynolds number.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
J. Goertz, J. Juergensen, D. Stolz, S. Wieprecht, K. Terheiden
Summary: Understanding and quantifying the heat fluxes between a civil structure and the environment is crucial for estimating cooling and heating requirements and inhibiting strains. Knowledge about incoming and outgoing heat fluxes is also important in low-energy and passive house design. However, accurately defining heat fluxes is complex. This study aims to improve the understanding and quantification of heat fluxes.
Article
Thermodynamics
Kazuya Nakamura, Ai Ueno, Hosei Nagano
Summary: This paper presents an experimental study on an anti-gravity loop heat pipe (LHP) that can transport heat against gravity for a few meters. The results show that the LHP is capable of transporting heat under horizontal and 2 m anti-gravity conditions.
APPLIED THERMAL ENGINEERING
(2022)
Article
Nanoscience & Nanotechnology
Kunihiko Shizume, Naoyuki Hatada, Kazuaki Toyoura, Hirotaka Tai, Tetsuya Uda
Summary: beta-La-2(SO4)(3) is a microporous inorganic crystal capable of accommodating various hydrogen compound molecules, with NH3, H2O, and HF being energetically stable in the crystal. The insertion of NH3 proceeds in two steps, differing from the single step insertion of H2O.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Kun Jiang, Chao Fan, Qiuyang Zhao, Hui Jin
Summary: Using PR-DNS method, this study investigates the gasification process of a single spherical char particle in a high-temperature supercritical CO2/gaseous H2O atmosphere. The effects of reaction temperature and Reynolds number on the drag coefficient, flow field, interphase thermal and mass transfer near the particle surface are analyzed. The results show that higher reaction temperature leads to smaller drag coefficient and improved heat transfer performance. The characteristics of temperature and Reynolds number vary under different reaction temperatures, indicating kinetically-controlled reactions in the gasification process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Thermodynamics
A. L. Sriram Sudhan, K. Ramachandran, A. Brusly Solomon, C. P. Jawahar
Summary: Heat pipes are silent heat transfer devices that utilize boiling and condensation for operation and have undergone several technological upgrades. This paper reviews the performance of heat pipes with nanoparticles deposition and suitable coatings, summarizing various heat transfer mechanisms involved. The study aims to provide a better understanding of the required improvements in cooling devices for future research and development of advanced cooling gadgets.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
R. Raja, Lijin George, Sabitha Jannet, Prudthvi Vijay Simha, Sumanth K. Ratna
Summary: In this study, SiC, TiO2, and Biochar were reinforced in Aluminium Alloy 5083 O using stir casting technique. The reinforced composite exhibited higher ultimate tensile strength, ductility, and microhardness, as well as lower wear rate compared to the base metal. FESEM analysis revealed the distribution of particles in the metal matrix.
ADVANCES IN MATERIALS AND PROCESSING TECHNOLOGIES
(2022)
Article
Thermodynamics
Stephen Manova, Lazarus Godson Asirvatham, Jefferson Raja Bose, Trijo Tharayil, Somchai Wongwises
Summary: Experimental investigation on the heat transport capability of a multiport minichannel thermosyphon revealed that the optimal confluence length of 5 mm and inclination angle of 90 degrees resulted in significant enhancements. These enhancements included reductions in thermal resistance and evaporator wall temperature, as well as an increase in evaporator heat transfer coefficient compared to the case with confluence length of 0 mm. Factors contributing to this enhancement included reduced entrainment effect, surface tension effect, and the presence of thin film at flat sides of the multiports.
APPLIED THERMAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
R. Raja, Sabitha Jannet, Lenin Dallas, Aibel Sam Saju, S. Rajesh Ruban
Summary: Aluminium metal matrix composites have extensive applications in automobile, aircraft, and marine sectors, making them the subject of extensive research. In this study, AA6063MgO/(Al2O3) flyash hybrid surface composites were fabricated using friction stir processing. The mechanical properties were evaluated, and the results showed that the addition of 12% reinforcement improved the tensile strength and hardness of the material but reduced the elongation.
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY
(2022)
Article
Engineering, Chemical
Tao Zhang, Xin Guo, Brusly Solomon, Mohsen Sharifpur, Li-Zhi Zhang
Summary: In this study, a hydrophobic-hydrophilic composite hollow fiber membrane with remarkable antiwetting and antifouling properties was successfully prepared to address the issues of membrane fouling and wetting in seawater desalination. The membrane, prepared using a chemical grafting method, exhibited low moisture transfer resistance and a superhydrophobic surface, resulting in a sustained high permeate flux.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
K. Ajith, Mallolu Jesse Aaron, Archana Sumohan Pillai, I. V. Muthuvijayan Enoch, A. Brusly Solomon, M. Sharifpur, J. P. Meyer
Summary: This investigation focuses on the influence of a magnetic field on the thermophysical properties and heat transfer of low-density ferrofluid. The optimal volume fraction of 0.05% was found to have the highest heat transfer performance at a wall temperature difference of 25 degrees C, with significant improvements compared to water.
APPLIED NANOSCIENCE
(2022)
Article
Engineering, Mechanical
R. S. Anand, C. P. Jawahar, A. Brusly Solomon, Evangelos Bellos, X. Ajay Vasanth
Summary: Nanorefrigerants, such as Al2O3/R134a, are found to improve heat transfer and reduce thermal resistance when applied in a two-phase closed thermosyphon. A new correlation is proposed to predict the heat transfer rate of nanorefrigerants in the thermosyphon.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
R. Jesinthaangel, G. Gomathi Jawahar
Summary: The article presents a new oscillation criteria that improves the existing results for the third order neutral delay difference equation with a negative coefficient in the neutral term.
PRZEGLAD ELEKTROTECHNICZNY
(2022)
Article
Thermodynamics
Stephen Manova, Lazarus Godson Asirvatham, Appadurai Anitha Angeline, Sheno Jerbin, Jefferson Raja Bose, Rajesh Nimmagadda, Russel Jayaseelan, Somchai Wongwises
Summary: This experimental study compared the heat transfer performance of copper screen mesh wick and metal foam inserted evaporator section in miniature loop thermosyphon. Results showed that the metal foam had better heat transfer performance compared to the copper screen mesh wick, making it a superior choice for thermal management in electronic devices.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
G. Pitchayyapillai, M. Jinnah Sheik Mohamed, G. Dhanraj, R. Malkiya Rasalin Prince, M. Rajeshwaran, Amol Mangrulkar
Summary: This research investigates the impact of Boron Carbide on the mechanical and tribological behavior of AZ91 Magnesium alloy composite. AZ91 Magnesium Alloy Particulate-reinforced composites were prepared by addressing the wetting problem between B4C and liquid magnesium metal. K2TiF6 was used as a flux and T6 thermal treatment was performed on the produced magnesium B4C composites. The composite with increased ceramic phase exhibited higher hardness compared to the base alloy.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Thermodynamics
R. S. Anand, C. P. Jawahar, A. Brusly Solomon, Shibin David, Evangelos Bellos, Zafar Said
Summary: This study focuses on the performance evaluation of thermosyphons using refrigerant R134a and Al2O3/R134 as working fluids. Two novel designs, including internal axial fins and a radial cut or gap in the evaporator section, were proposed to enhance the heat transfer. The results show that the thermal resistance of the proposed designs is significantly decreased compared to the conventional thermosyphon. Experimental investigations with nanoparticle Al2O3 mixed with R134a at a concentration of 1.0% were also carried out, showing further improvement in thermal resistance. Machine learning algorithm was used to validate the experimental results, yielding good agreement between predicted and experimental data.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Sireesha Veeramachaneni, Srinivas Kishore Pisipaty, Dharma Rao Vedula, A. Brusly Solomon, V. Sree Harsha
Summary: A novel hybrid nanofluid has been experimentally tested for its effects on the heat transfer performance of flat rectangular loop heat pipe, showing higher performance than water in terms of thermal resistance and effective thermal conductivity.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(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)
