Article
Thermodynamics
Shuai Tang, Bin Zheng, Yingkai Shen, Peng Sun, Tengfei Gao, Jingbin Hu, Chenxi Qiu, Hong Ji, Yongqi Liu
Summary: A heat transfer model of two-dimensional steady-state particle bed with double vacancy was established to study the effects of double vacancy and the variation of vacancy gap on heat transfer. The results showed that double vacancy hinders heat transfer, while the interaction between double vacancies on the temperature field gradually decreases as the number of gap between them increases.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Environmental
Fabrice Tanguay-Rioux, Martin Heroux, Robert Legros
Summary: This study focuses on characterizing the physical properties of recyclable materials and proposes a novel approach to quantify the shape factor based on the void fraction of a waste item. By analyzing statistical parameters and exploring potential applications, the study demonstrates how these results can be used to improve mechanical sorting in material recovery facilities.
Article
Engineering, Chemical
Mingchao Wang, Zhongliang Zhang, Chenglu Qi, Peng Sun, Youtang Wang, Bin Zheng
Summary: The study establishes a particle flow model of heat exchanger based on the discrete element method to investigate the correlation between surface roughness and particle velocity fluctuation. The study finds that the force chain structure between particles undergoes continuous breaking and reconstructing, leading to constant fluctuation of particle velocity with frequencies ranging from 0.05 Hz to 0.08 Hz. Furthermore, an increase in static friction coefficient causes the force chain distribution to gradually shift horizontally, intensifying the vertical velocity fluctuation. These findings provide insights into the dynamic behavior of particles in heat exchangers and serve as a basis for further improvements.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Review
Thermodynamics
Yiyu Men, Xiaohua Liu, Tao Zhang
Summary: The technology of waste heat recovery from medium-low temperature flue gas has been extensively reviewed, focusing on the principle and characteristics of various systems. More advanced waste heat recovery systems are proposed to enhance the difference between the cold source and the flue gas, with heat recovery efficiency exceeding 80% in some cases. Specific systems, such as heat pump systems and vapor pump boiler systems, are analyzed for their efficiency, economic benefits, and pollutant emissions.
Article
Thermodynamics
D. Di Battista, F. Fatigati, R. Carapellucci, R. Cipollone
Summary: This paper presents a combined solution by coupling two thermodynamic cycles for waste heat recovery in internal combustion engines to improve efficiency. By designing heat exchangers suitable for engine working points, the combined recovery system ensures optimal performance in a wide range of conditions.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Review
Green & Sustainable Science & Technology
Yin Ding, Jun Zhao, Jia-Wei Liu, Jizhi Zhou, Liang Cheng, Jia Zhao, Zhe Shao, Cagatay Iris, Bingjun Pan, Xiaonian Li, Zhong-Ting Hu
Summary: The management of MSW in China still has room for improvement and should be combined with advanced technologies to achieve resource utilization. The amount of MSW generated in eastern coastal regions of China is increasing, but the management efficiency is lower than that of developed countries.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Funda Ates, Hasan Ozcan
Summary: This study investigates Turkey's overall industrial waste heat potential and considers various power and hydrogen conversion technologies to produce useful energy. Different systems are adapted based on the waste heat temperature, and economic analysis shows that the GT-HyS system has the lowest hydrogen generation cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Saleh A. Alhaidari, Sulaiman A. Alarifi
Summary: This study investigated walnut, graphite, and marble as lost circulation materials, and established particle size selection guidelines. The results showed that carrier fluid type had a significant impact on marble particle size degradation, while walnut and graphite were not affected by the carrier fluids and showed consistent performance.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Charlie Wilson, Simon De Stercke, Caroline Zimm
Summary: Granular energy technologies, with smaller unit sizes and costs, have advantages in faster deployment, job creation, and wider distribution of benefits compared to large-scale alternatives. A study analyzed 93 green recovery funding programs in France, Germany, South Korea, and the UK, and found that South Korea's program had the highest technological granularity, focusing on distributed renewables, smart technologies, and low-cost technologies that are quick to implement. The UK, on the other hand, concentrated public funds on a few mega-scale energy projects with high implementation risks, resulting in the least granular portfolio. The study demonstrates the importance of technological granularity in achieving green recovery goals.
Article
Environmental Sciences
Jianguo Liu, Xuezheng Yu, Ying Wang, Yunping Han, Yingnan Cao, Zixuan Wang, Jinxin Lyu, Ziyu Zhou, Ying Yan, Tianlong Zheng
Summary: The release of bioaerosols from solid waste dumps in rural China poses a potential health risk to the local population. This study investigated the emission and dispersion characteristics of bioaerosols from rural solid waste-treatment facilities in northwest China. The concentrations and size distributions of airborne bioaerosols were measured, and the microbial composition was analyzed using high-throughput sequencing. The study found that bioaerosols near the solid waste contained high concentrations of bacteria and fungi, and winter-indicator species with potential pathogenicity were detected. Inhalation was identified as the main exposure route for local residents, particularly children. The results highlight the health risk posed by bioaerosols in rural solid waste dumps and the need for appropriate risk assessment criteria and control measures.
ENVIRONMENTAL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Haibo Gao, Yuqiu Zhang, Yongqi Liu, Yanxia Wang, Bin Zheng, Peng Sun, Xiaochen Hou, Guangdong Tian
Summary: Experimental study shows that proper management of flowing irregular semi-coke can significantly improve heat transfer performance, with particular benefits seen from control of initial temperature and flow velocity. Compared to conditions without steam flow, the heat transfer performance of semi-cokes is enhanced with steam flow, where steam acts as a key factor in improving heat transfer efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Miriam Benedetti, Daniele Dadi, Lorena Giordano, Vito Introna, Pasquale Eduardo Lapenna, Annalisa Santolamazza
Summary: The study aims to develop two databases on waste heat recovery case studies and technologies to enhance knowledge transfer in the industrial sector, providing detailed information to support companies in all phases of heat recovery interventions.
Article
Environmental Sciences
Naila Amin, Muhammad Aslam, Zakir Khan, Muhammad Yasin, Shakhawat Hossain, Muhammad Kashif Shahid, Abrar Inayat, Ahmed Samir, Rizwan Ahmad, Mohammad N. Murshed, Muhammad Shahzad Khurram, Mohamed E. El Sayed, Moinuddin Ghauri
Summary: The global municipal solid waste is generating at an alarming rate, posing severe concerns for its disposal. It leads to climate change, health hazards, and other environmental issues. Waste to energy (WTE) is considered as an alternative renewable energy source to address global waste problems. This review evaluates the sources and management routes of solid waste, highlighting gasification as an efficient and sustainable approach. A framework for the gasification process and recommendations for country-wise waste management solutions are provided. Furthermore, the study discusses the potential perspectives and practical implications of membrane-based separation technology for bioenergy recovery.
Article
Thermodynamics
Junlin Chen, Jingzhi Zhou, Xunfeng Li, Xiulan Huai
Summary: This study investigated the heat transfer characteristics and waste heat recovery of a moving granular bed filter during hot gas clean-up. It was found that moderate granular velocity and superficial velocity are recommended to achieve high waste heat recovery efficiency.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Aaron Brewer, Justyna Florek, Freddy Kleitz
Summary: Critical materials are important for the modern economy but may face supply limitations. Solid-phase extraction is an experimental extraction technology that can selectively extract critical materials from aqueous solutions. Silica monoliths are a cutting-edge sorbent that can be used for the selective extraction of specific critical materials. Further research in solid-phase extraction should focus on scalability, real-world feedstocks, techno-economic analysis, and environmental impact studies.
Article
Green & Sustainable Science & Technology
Karem Elsayed Elfeky, Abubakar Gambo Mohammed, Qiu Wang Wang
Summary: The study investigated the thermal performance of an air rock thermocline TES tank using a DEM-CFD coupled model, showing a reduction in wall effect with the use of a distributor, critical velocity for efficient operation of each subsystem, and varying overall cycle efficiency and capacity utilization ratio at different inlet velocities.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Green & Sustainable Science & Technology
Abubakar Gambo Mohammed, Karem Elsayed Elfeky, Qiuwang Wang
Summary: The paper reviews the research progress in battery thermal management for commercial EVs, focusing on phase change material (PCM) based hybrid thermal management. It also presents a developed passive thermal management for prismatic Li-ion battery module under abuse operation conditions. The hybrid thermal management combining PCM with air/liquid/heat pipes shows superior thermal performance, and further improvements in battery thermal management systems are needed to regulate thermal impact and power consumption.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Kexin Huang, Bo Su, Tong Li, Hanbing Ke, Mei Lin, Qiuwang Wang
Summary: Thermal stratification is the main cause of thermal fatigue failure in rectangular T-junctions. By setting an impeller with a constant rotation speed, the mixing behavior of hot and cold fluids can be improved, and various flow patterns including wall jet, deflecting jet, and impinging jet can be observed. The relationship between mixing length and blade diameter is not monotonic, and the optimal operating point is around D-p* = 0.5 for impellers with 2 blades.
APPLIED THERMAL ENGINEERING
(2022)
Review
Energy & Fuels
Wenxiao Chu, Maria Vicidomini, Francesco Calise, Neven Duic, Poul Alborg Ostergaard, Qiuwang Wang, Maria da Graca Carvalho
Summary: The COVID-19 pandemic has significantly impacted traditional fossil fuel supply chains, with oil refining activity falling beyond expectations, and renewable markets showing resilience. While renewable energy is on track to meet a large portion of electricity demand growth, more efforts are needed to reduce environmental pollution and carbon emissions.
Article
Energy & Fuels
Bingcheng Li, Min Zeng, Qiuwang Wang
Summary: The purpose of this study is to simulate the continuous bend erosion process in different directions using the dense discrete particle model (DDPM). The influence of the length of the straight pipe in the middle of the continuous bend is investigated. The simulation results show that the DDPM has good accuracy in predicting the distribution of the continuous bend erosion processes in different directions.
Article
Thermodynamics
Fei Xin, Qiang Lyu, Qiuwang Wang
Summary: Mini-grooved flat heat pipe (FHP) is an efficient approach to cool electronics within limited space. A three-dimensional model was established to study the working mechanisms of FHP filled with different working fluids under transient and steady states. The type, properties, and input heat of the working fluid were found to affect the performance of FHP.
HEAT TRANSFER ENGINEERING
(2023)
Article
Engineering, Chemical
Wenyao Zhang, Huilong Yan, Qiuwang Wang, Cunlu Zhao
Summary: The study proposes an extended TMS theory applicable to cases with both salinity and temperature gradients, showing good quantitative agreement with experimental data. Results suggest that membrane potential can be enhanced when salinity and temperature gradients are in opposite directions, and can be enhanced or reduced depending on the extent of the TP effect when gradients are in the same direction.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Thermodynamics
Syed Murawat Abbas Naqvi, Qiuwang Wang, Muhammad Waqas, Ranjeetkumar Gupta, Faisal Rafique
Summary: This study evaluates the impact of gradient and multi-layered porous media on the thermo-hydraulic performance of a novel baffle design arrangement. The findings show that linear/stepwise increments in both cases give similar performance evaluation criteria values. A genetic algorithm optimization model is used to identify the optimal arrangement of the porous layers, resulting in a higher performance evaluation criteria value. Testing a nanoparticle solution further improves the heat transfer rate.
HEAT TRANSFER ENGINEERING
(2023)
Article
Engineering, Chemical
Huilong Yan, Wenyao Zhang, Yonghe Cui, Fang Qian, Dongmin Wei, Panpan Guo, Kai Jiao, Jin Huang, Qiuwang Wang, Cunlu Zhao
Summary: This study proposes a method for fabricating lubricant infused surfaces (LIS) on the inner walls of metal capillaries to achieve sustainable drag reduction and anti-corrosion properties. The experimental results show that LIS metal capillaries exhibit durable drag reduction and anti-corrosion characteristics, and the drag reduction performance can be effectively tuned by varying the viscosity of infusion lubricants.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Thermodynamics
Yang Cheng, Yingxiao Li, Jinghan Wang, Lapmou Tam, Yitung Chen, Qiuwang Wang, Ting Ma
Summary: This paper designs a hydrogen cooler with a thermal load of 72 kW and evaluates its performance using the exergoeconomic method. The study shows that operating cost is related to exergy destruction, with thermal exergy destruction being the main factor. The geometrical parameters of the channel are optimized through multi-objective optimization. Compared to coaxial tube evaporators, the printed circuit heat exchanger has better performance in terms of volume and total cost.
Article
Thermodynamics
Zeran Han, Dongjun Xu, Ping Wu, Nongchao Tan, Qiuwang Wang, Ting Ma
Summary: The relativistic backward wave oscillator is a powerful microwave generator that has great potential in various applications. However, the deposition of waste electrons on the collector leads to a rise in temperature, which negatively affects the safety and stability of the oscillator. By using thermal conduction and phase change heat transfer models, this study calculates the temperature characteristics of the collector and proposes methods to reduce its temperature and retardation time.
Article
Metallurgy & Metallurgical Engineering
Jiaqi Tong, Caibin Wu, Ningning Liao, Chengfang Yuan, Zhilong Cheng, Chong Zeng
Summary: In this paper, the authors conducted experiments to compare the fineness indicators commonly used in scientific research and industrial practice. They found that using mass percentage passing 75 p.m as an indicator is more common in industrial practice. Furthermore, they proposed using the relationship between mass percentage passing 75 p.m and the energy-particle size model as a substitute for the relationship between cumulative percentage passing 1/10 of the initial size and the energy-particle size model.
MINING METALLURGY & EXPLORATION
(2023)
Article
Thermodynamics
Jinghan Wang, Kai Chen, Min Zeng, Ting Ma, Qiuwang Wang, Zhilong Cheng
Summary: Heat exchangers are crucial components for ensuring the safe and efficient operation of nuclear energy systems. This study explores the use of additive manufacturing to create advanced heat exchangers based on triply periodic minimal surfaces (TPMS), which offer superior mechanical and thermal-hydraulic performance. Parametric analysis and empirical correlations for convective heat transfer in turbulent regime are established, providing a database for the design and application of TPMS-based heat exchangers. This research contributes to energy-saving and sustainability goals.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Zhilong Cheng, Ruina Xu, Peixue Jiang
Summary: Transpiration cooling using liquid coolants is a promising technique for thermal protection in aerospace vehicles. Additive manufacturing can tailor porous structures with well-controlled pore features, optimizing coolant distribution and enhancing cooling performance. Graded porous media outperforms uniform pore topology in cooling performance, with improved coolant distribution and minimized hot-spot temperature.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Abubakar G. Mohammed, Qiuwang Wang, Karem E. Elfeky
Summary: To curb emissions, the electrification of road transportation is necessary. This paper investigates a battery thermal management system for electric vehicles to improve cooling performance and temperature uniformity in the battery stack.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
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)
