Article
Energy & Fuels
S. Venkatraman, P. Jidhesh, J. David Rathnaraj, C. Selvam
Summary: This article explores the discharging process of phase change materials in latent heat energy storage systems to maintain the temperature of water. Copper tubes and steatite nanoparticles are used to enhance the discharging characteristics of phase change materials. The experimental results show that nano-phase change materials have the potential to maintain water temperature for a specific duration, which is cost-effective.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Nanoscience & Nanotechnology
J. G. Ke, Z. M. Xie, R. Liu, R. Gao, X. P. Wang, X. B. Wu, K. Jing, L. Wang, B. L. Zhao, Q. F. Fang, C. S. Liu
Summary: Nanoscale W particle dispersion strengthened Cu alloys can enhance strength and thermal conductivity by refining grain size, leading to promising heat sink materials for future fusion reactors.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Yunhong Shi, Awatef Abidi, Yacine Khetib, Long Zhang, Mohsen Sharifpur, Goshtasp Cheraghian
Summary: In this study, Molecular Dynamics (MD) is used to investigate the atomic and thermal performance of H2O/Fe nanofluid by inserting Fe nanoparticles with various shapes into H2O molecules. The results show that spherical nanoparticles have a significant impact on the behavior of the nanofluid.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Claudio Cazorla, Massimiliano Stengel, Jorge Iniguez, Riccardo Rurali
Summary: We predict a significant variation in heat conductivity in SrMnO3 thin films near room temperature by applying small electric and/or magnetic fields based on first-principles simulations. This is caused by a phase transition that involves large changes in both magnetization and electric polarization, resulting in a relative heat conductivity variation of about 100%. These findings are attributed to the anharmonic spin-phonon couplings that strongly influence the mean lifetime of phonons.
NPJ COMPUTATIONAL MATERIALS
(2023)
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
Agricultural Engineering
Dexin Huang, Yankui Wang, Gongxiang Song, Song Hu, Hanjian Li, Yanping Zhang, Yi Wang, Sheng Su, Saad A. El-Sayed, Jun Xiang
Summary: Photo-thermal pyrolysis provides a new method for preparing bio-char with high specific heat capacity and thermal conductivity. The final-reaction temperature has a stronger effect than the heating rate, and the physical structure of the char, including density and pore size, significantly influences the thermal conductivity.
BIOMASS & BIOENERGY
(2023)
Article
Energy & Fuels
Seyed Masoud Hashemi, Ali Maleki, Mohammad Hossein Ahmadi
Summary: This study investigated the impact of three different nanofluids on the performance of pulsating heat pipes, finding that the use of nanofluids can increase heat transfer efficiency and reduce thermal resistance. Among the nanofluids used, the nanocomposites with a concentration of 0.25 g/L showed the best performance.
Article
Green & Sustainable Science & Technology
Ting Ma, Zhixiong Guo, Mei Lin, Qiuwang Wang
Summary: Nanofluids have been gaining attention in the research and development of renewable and sustainable energy systems, as the addition of solid nanoparticles with high thermal conductivity can enhance heat transfer. However, the complex nature of nanofluids, including nonlinear effects and contradictory results, presents challenges. Machine learning methods show promise in predicting thermophysical properties and evaluating performance in heat transfer research.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Materials Science, Ceramics
Nazmul Huda, Mark A. Whitney, Mohammad H. Razmpoosh, Adrian P. Gerlich, John Z. Wen, Stephen F. Corbin
Summary: Ceramic materials have the potential to store thermal energy with reasonable cost, with their thermodynamic properties depending on temperature and energy storage capacity varying significantly with microstructure and porosity. The correlation between microstructure change and energy storage capacity is explored through characterization of alumina specimens.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Physics, Multidisciplinary
E. Lerner, E. Bouchbinder
Summary: By studying disordered crystals and structural glasses, we found that the quartic law is applicable in both materials, and disordered crystals have more quasilocalized excitations compared to structural glasses. This research contributes to understanding the essential factors for the emergence of universal nonphononic excitations in disordered solids.
PHYSICAL REVIEW LETTERS
(2022)
Article
Crystallography
Ying-Long Zhou, Jie Liu, Dong-Mei Luo
Summary: This study investigated the microstructure, mechanical and thermal properties of Mg-0.5Ca-xZr alloys in order to evaluate their potential values in heat dissipation applications. The results showed that the increase of Zr content and the extrusion process improved the mechanical strength of the alloys but worsened their thermal performance. The alloys also exhibited an increase in thermal conductivity and mechanical strength with aging time due to the precipitation of Zr and compound Mg2Ca. The Mg-0.5Ca-0.5Zr alloy aged at 473 K for 48 h showed higher thermal conductivity and similar mechanical strength to commonly-used Mg alloys, suggesting its potential as a heat dissipation material.
Article
Environmental Sciences
Aashish Sahu, Devi Prasad Mishra
Summary: This study measured the thermal properties of five coal samples at six different particle sizes using an advanced thermal property analyzer. The thermo-physical properties of coal dust were found to be positively correlated with the particle size and the ash percentage, bulk density, and specific gravity of coal dust. However, they were negatively correlated with the fixed carbon and volatile content of coal. Empirical relations between the thermo-physical properties were established. The thermal conductivity, diffusivity, and specific heat capacity of coal dusts varied within certain ranges, depending on the particle size and coal sample.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Renan C. Lazaro, Carlos Marques, Carlos E. S. Castellani, Arnaldo Leal-Junior
Summary: This paper presents the development of a thermal measurement system for density, specific heat capacity and thermal conductivity in fluids, using Fiber Bragg Gratings (FBGs) for sensor development. The diaphragm system and temperature sensor were employed to estimate density, specific heat and thermal conductivity, with successful implementation of a method to estimate specific heat and thermal conductivity using the heat equation. The proposed system allows for simultaneous measurements of density, specific heat and thermal conductivity with the same structure.
IEEE SENSORS JOURNAL
(2021)
Article
Physics, Condensed Matter
Dongxu Wu, Lin Liang
Summary: Understanding the thermal contact resistance between nanoparticles is crucial for tuning the thermal conductivities of metallic nanoparticle-packed beds (NPBs). In this study, a theoretical model was established to comprehend the heat transport properties in NPBs, including background thermal resistance (Rbulk), thermal contact resistances between particles (Rcontact), and interfacial thermal resistance between solid and air (Rinter). Copper NPBs were prepared and their thermal conductivity (TC) was measured, demonstrating that the model matches the experimental data well. The ultra-low TC of copper NPBs is attributed to the large Rcontact generated at the interface by electron boundary scattering. This study provides valuable insights to tailor the TC of metallic nanoparticles packed beds.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Geosciences, Multidisciplinary
Yiwei Ren, Qiang Yuan, Yanfei Kang, Like Wei, Zongze Li, Deyi Jiang, Huayong He, Hong Xu
Summary: Salt rock is a suitable parent rock for geological disposal of high level radioactive waste. This study measured the thermal conductivity, specific heat, and thermal diffusion coefficient of salt rock, and established models for these properties with temperature. The findings can provide reference for the construction of underground salt rock disposal repositories, and the temperature field evolution of the repository during operation was studied.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Energy & Fuels
Jinxin Zhong, Congliang Huang
Summary: This study proposed an improved heat and mass transfer model for high-temperature vapor system and discussed the influences of main factors on evaporation efficiency and vapor temperature using the finite element method. The results indicated that high-temperature vapor could be achieved by applying optimal porosity and proper absorbers, rather than enhancing the heat-insulating property of the bi-layer systems.
FRONTIERS IN ENERGY
(2022)
Article
Thermodynamics
Changkang Du, Congliang Huang
Summary: Efficient and easy-to-operate vapor condensation method is proposed for solar desalination, with a balance between optimization based on theory and experimentation. The system shows great potential for sustainable freshwater production.
APPLIED THERMAL ENGINEERING
(2022)
Article
Construction & Building Technology
Dongsheng Li, Congliang Huang
Summary: A novel porous carbon material was developed from pressed and carbonized pine sawdust, showing excellent thermal insulation performance and environmental friendliness. The carbonized pine sawdust packed (CPP) bed exhibited low thermal conductivity, high porosity, hydrophobicity, reusability, and structural stability.
ENERGY AND BUILDINGS
(2022)
Article
Thermodynamics
Yi An, Congliang Huang, Xiaodong Wang
Summary: Thermal conductivity plays a more important role than wettability in boiling heat transfer, as high thermal conductivity reduces bubble nucleation activation time. When thermal conductivity is fixed, high wettability enhances boiling heat transfer due to increased bubble-separation frequency. In this experiment, a 2-layered structure combining copper and nickel demonstrated a maximum heat transfer coefficient of about 2.7 x 10(4) W/(m(2).k), which is approximately 1.3 (1.47) times higher than that of single-layer copper (nickel) with the same thickness and porosity, attributed to its high thermal conductivity and wettability.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Engineering, Chemical
Congliang Huang, Qiangqiang Huang
Summary: A coordination-number model for hybrid-particle packed beds was established, and the thermal conductivity model was derived with statistical method. The model showed accurate predictions of coordination-number and thermal conductivities in particle packed beds.
Article
Thermodynamics
Wang Shaoyu, Wang Zijie, Wang Shuolin, Yang Yanru, Huang Congliang, Wang Xiaodong
Summary: The kinetics of Al-Ni and Cu-Ni nanodroplets spreading on a Cu substrate with a temperature difference between them were studied using molecular dynamics simulations. The simulations revealed that significant dissolution reactions occurred in both systems and no precursor film was formed during spreading. The spreading rate of nanodroplets in the Al-Ni/Cu wetting systems increased when they contained fewer Ni atoms, while in the Cu-Ni/Cu wetting systems, the spreading rate remained unchanged regardless of the Cu to Ni ratio due to their similar lattice constants. The simulations also showed that local solidification occurred in the later spreading stage due to the temperature gradient, hindering the spreading process.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Thermodynamics
Lan Yingying, Huang Congliang, Guo Chuwen
Summary: Developing advanced high-temperature thermal storage systems is crucial for improving the efficiency and reducing the costs of solar thermal storage. Two typical systems composed of Cu as the matrix and Sn as the phase change material (PCM) were explored in this study: a 3D structure system with embedded Sn particles and a 2D structure system with embedded Sn wires. The thermophysical properties of PCM and matrix were derived theoretically, and used to estimate the energy storage ability and investigate the influence of structure on heat transfer efficiency. Results showed that the 3D structure system was a better choice due to its larger specific surface area, sensitive heat capacity, and thermal conductivity. The thermal conductivity of the system decreased exponentially when the feature size of the PCM decreased below a critical value, while the heat storage capacity increased linearly. Moreover, when the feature size of the Sn geometry was below a critical value, the Cu matrix could not improve the effective thermal conductivity of the whole system.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Thermodynamics
Changkang Du, Dongtai Han, Congliang Huang
Summary: Solar energy has been utilized for desalination due to its abundance and cleanliness, showing potential in addressing freshwater shortage. Heat-localized solar evaporation systems have recently gained interest for their high efficiency, with new materials and structures being explored for improved performance. The method of thermal redistribution has been proposed to increase vapor condensation by raising the average temperature of generated vapor, showing a 30% increase in condensation rate.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Qiangqiang Huang, Changkang Du, Congliang Huang
Summary: This study proposes a heat-localized solar evaporator made from wasted durian shells, which exhibits high absorption efficiency, evaporation rate, and salt resistance. By carbonization and polypyrrole deposition, a hierarchical solar absorption structure is formed on the surface of durian shells, resulting in improved absorption efficiency. The curved bottom surface and pyramid-shaped structures further enhance the evaporation efficiency and salt resistance.
APPLIED THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Yingying Lan, Congliang Huang
Summary: This study investigates a new type of leakage prevention nanocomposite, which encloses metallic phase change materials with excellent adsorption capacity nanoparticles. The nanocomposite not only prevents liquid leakage during the thermal storage process, but also enhances the specific heat capacity of the system.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Zhihao Zhong, Congliang Huang, Xiaodong Wang
Summary: This study combines the advantages of copper mesh and multilayer nanoparticle-packed beds to improve pool-boiling heat transfer. By adjusting the layer thickness and porosity of the beds and coating them with copper mesh, a significant enhancement in heat transfer performance can be achieved.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Engineering, Multidisciplinary
Li DongSheng, Gao Gang, Huang CongLiang
Summary: This paper presents a facile strategy to prepare a porous foam made from a chitosan matrix reinforced by SiC whiskers, which exhibits good performance in building insulation and mechanical strength. The density of the chitosan-SiC porous foam can be controlled by adjusting the suspension solid and SiC whisker content. The study also investigates the effects of SiC whisker content on the mechanical properties and thermal conductivity of the foam, showing that a SiC whisker content of 30 wt% provides the highest compression modulus and low thermal conductivity.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Thermodynamics
Zhiguo Lv, Yi An, Congliang Huang
Summary: To improve the heat transfer performance, researchers have designed various special porous structures, but little research has been done on the thermal conductivity of materials applied in the porous structure. In this study, the thermal conductivity of copper porous structures was enhanced by adding metalized diamond, resulting in improved pool boiling performance.
APPLIED THERMAL ENGINEERING
(2023)
Review
Chemistry, Physical
Changkang Du, Xinpeng Zhao, Xin Qian, Congliang Huang, Ronggui Yang
Summary: Solar evaporation technology, which is free of fossil fuel consumption and carbon dioxide emission, has attracted significant research interest in recent years. Although many systems have achieved high evaporation efficiency, the upper limit of this efficiency is not bounded by 100%. In this article, the thermodynamic limit of solar evaporation efficiency is analyzed, and the challenges and potential improvements for heat-localized solar evaporation and their hybrid systems are discussed.
Review
Multidisciplinary Sciences
Congliang Huang, Qiangqiang Huang, Changkang Du, Xiao Luo
Summary: The solar steam generation system has attracted significant research attention for its high conversion efficiency. Current research focuses on the heat and mass transfer mechanisms, optimization of the light-to-heat conversion layer, and system structure and material selection. The evaporation efficiency is related to environmental factors and there are technical limitations that need to be addressed for further enhancement of the system.
CHINESE SCIENCE BULLETIN-CHINESE
(2021)
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)
