Article
Thermodynamics
Yifan Tang, Yuhao Luo, Pengyuan Du, Huawei Wang, Haonan Ma, Yuanfeng Qin, Pengfei Bai, Guofu Zhou
Summary: LED has clear advantages over traditional halogen headlights in terms of energy consumption, photoelectric efficiency, luminous flux, and lifespan, but faces challenges in thermal management. This paper introduces a novel heat pipe-assisted compact heat sink (HPACHS) design to reduce LED junction temperature, showing promising cooling performance.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Gokhan Sevilgen, Muhsin Kilic, Mehmet Aktas
Summary: This paper conducted thermal and hydraulic analysis of a dual-separated cooling channel for automotive lighting systems, comparing theoretical and simulation results to find that using the dual-separated cooling channel can increase light output by about 10% and reduce junction temperature, resulting in improved operating efficiency.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Jian Qu, Fengbo Guan, Yaojie Lv, Yalin Wang
Summary: The experimental study showed that micro-grooved OHP can significantly enhance the allowable maximum input heat flux and prevent dry-out. The thermal conductivity of OHP varies under different filling ratios. This study provides a promising option for thermal management of high-density power devices.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Xuan Zhang, Chengbin Zhang, Yongping Chen
Summary: This study investigates the thermal management effectiveness of a heat pipe coupled with phase change material (PCM) based latent heat storage (LHS) system for high heat loads in electronic devices. Both experimental and theoretical analyses show that arranging PCM units at the evaporator section optimizes the system's performance under intermittent heat load conditions by stabilizing the heat source temperature and improving temperature uniformity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Xuan Zhang, Dingyi Jiang, He Wang, Xiangdong Liu
Summary: The study focused on the startup behaviors of evaporation heat transfer in trapezoidal grooves, analyzing the effects of heat load and inclined angles. The transition from gradual startup to overshoot startup was found to be influenced by the Bond number and Weber number.
APPLIED THERMAL ENGINEERING
(2021)
Article
Acoustics
Ye Yao, Yue Pan, Shiqing Liu
Summary: In this study, a new type of high-power transducer with heat pipe heat dissipation (HPUT) is proposed by employing the technology of heat pipe. Compared with traditional Langevin ultrasonic transducer (TLUT), the HPUT has lower operation temperature, smaller resonant frequency shift, and higher vibration amplitude.
Article
Thermodynamics
Chunrong Yu, Yulong Ji, Yadong Li, Zhang Liu, Lilin Chu, Hailang Kuang, Zongyu Wang
Summary: In this study, a three-dimensional oscillating heat pipe (3D-OHP) with 18 channels was developed using a hybrid fluid of ammonia and liquid metal as the working fluid. Experimental results showed that the 3D-OHP effectively addressed the thermal management issues associated with high-power and high-heat-flux electronic devices, and demonstrated improved heat transfer performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
K. Zeghari, H. Louahlia, Anne-Lise Tiffonnet, Pierre Schaetzel
Summary: In this paper, the thermal performance of a cylindrical micro-grooved heat pipe was investigated experimentally and mathematically. New correlations for the condensation and evaporation heat transfer coefficients were proposed based on experimental data. A coupled thermal and hydraulic model was developed to predict the heat pipe's local thermal resistances and operating temperature, considering the architectural size. Experimental results showed that the heat pipe's thermal performance was not affected by the inclination angle, but better at horizontal position.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Review
Energy & Fuels
Chenxi Li, Ji Li
Summary: Pulsating heat pipe, as a branch of heat pipes, is a widely recognized passive cooling technique with advantages of small size, simple and compact structure, and high heat dissipation efficiency. Its application in data centers is still in the early stages with limited research and implementation reports available.
FRONTIERS IN ENERGY RESEARCH
(2021)
Article
Thermodynamics
Prem Kumar, Gopinath Sahu, Debartha Chatterjee, Sameer Khandekar
Summary: This study demonstrates the feasibility of using a copper Loop Heat Pipe (LHP) as a thermal management solution for high-power LED modules. Through experiments and computational simulations, the results show that the copper-methanol LHP design can effectively dissipate the heat generated by the module and maintain the junction temperature within a reliable range.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Yongyan Li, Nanxi Li, Bo Shao, Deping Dong, Zhenhua Jiang
Summary: A supercritical startup model for grooved heat pipes was established in this paper, which can predict the startup performance including temperature distribution and startup time. The model showed good agreement with the experimental results and analyzed the effects of different condenser lengths and structural parameters on the startup process. It provides a theoretical basis for the design and optimization of cryogenic grooved heat pipes.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Cristiano Enke, Jorge Bertoldo Junior, Valeri Vlassov
Summary: The study investigated the influence of NCG on the performance of axially-grooved ammonia heat pipes, developing a mathematical model for simulation and conducting experiments to validate it. The results showed that NCG distorts the temperature profile of the pipes and that temperature change rate can be used for more sensitive detection of small amounts of NCG.
APPLIED THERMAL ENGINEERING
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Liping Wang, Ping Su, Jianshe Ma, Jianwei Huang
Summary: This paper proposes a laser-assisted LED car high-beam headlight design, which optimizes the optical design to maximize the advantages of laser light sources, improve the vehicle's high-beam lighting effect, and address the limitations of laser applications in headlights.
AOPC 2021: DISPLAY TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Peisheng Liu, Chenhui She, Lipeng Tan, Pengpeng Xu, Lei Yan
Summary: This review examines the packaging technology and structure of LEDs from the perspective of thermal performance and introduces related technologies for heat dissipation. The design of three components, including the substrate, lens, and phosphor layer, to enhance heat dissipation in LED packaging is described. By investigating the defects of LED packaging technology and structure and providing prospects for packaging, this review offers valuable insights into heat dissipation design and helps improve LED packaging design and manufacturing.
Article
Thermodynamics
Fangqiong Luo, Chi Ma, Jialan Liu, Li Yang, Wenhui Zhou
Summary: The study investigates the influence of axially rotating heat pipe (ARHP) on the fluid-thermal-solid behavior of high-speed spindles. A suitable ARHP is designed and its operating and heat dissipation performance are experimentally studied under different conditions. The results show that embedding the ARHP and silicone grease into the spindle reduces the maximum temperature by 50% and the maximum thermal deformation by 76.5% compared to the original spindle.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Wei-Jhen Chen, Yue-Lin Lee, Ti-Yuan Wu, Tzu-Ching Chen, Chih-Hui Hsu, Ming-Tzer Lin
JOURNAL OF ELECTRONIC MATERIALS
(2018)
Article
Chemistry, Physical
Terry Yuan-Fang Chen, Yun-Chia Chou, Zhao-Ying Wang, Wen-Yen Lin, Ming-Tzer Lin
Article
Chemistry, Analytical
Nhat Minh Dang, Zhao-Ying Wang, Ti-Yuan Wu, Tra Anh Khoa Nguyen, Ming-Tzer Lin
Summary: This study investigated the effects of different substrates on the mechanical properties of Ti-60at%Ni shape memory alloys. The results showed that TiNi thin film with a Cr adhesion layer had better mechanical properties, higher Young's modulus, and lower residual stress. The Cr adhesion layer was found to buffer the mismatch between Ti-60at%Ni and SiNx, improving both thermal and fatigue resistance of the films.
Article
Chemistry, Multidisciplinary
Zhao-Ying Wang, Nhat Minh Dang, Po-Hsun Wang, Terry Yuan-Fang Chen, Ming-Tzer Lin
APPLIED SCIENCES-BASEL
(2020)
Article
Chemistry, Physical
Nhat Minh Dang, Zhao-Ying Wang, Yun-Chia Chou, Tra Anh Khoa Nguyen, Thien Ngon Dang, Ming-Tzer Lin
Summary: This study investigated the quasi-static properties of Al thin films at microscopic scales, finding that the internal friction of ultra-thin and thin Al films was more dependent on grain boundaries than film thickness. The research used a decay technique to determine energy loss in vibrating structures under high vacuum conditions at room temperature.
Article
Materials Science, Multidisciplinary
Terry Yuan-Fang Chen, Nhat Minh Dang, Zhao-Ying Wang, Liang-Wei Chang, Wei-Yu Ku, Yu-Lung Lo, Ming-Tzer Lin
Summary: The study utilized digital image correlation method for measuring the deformation of chicken breast bio-tissue, investigating the influence of subset size and correlation criteria on accurate measurement, with results showing an error of less than 3%. It was also found that the strain values of the bio-tissue were proportional to the displacement, and ε(y) indicated the viscoelastic behavior.
Article
Materials Science, Multidisciplinary
Nhat Minh Dang, Wen-Yen Lin, Zhao-Ying Wang, Sima Ahmad Alidokht, Richard R. Chromik, Terry Yuan-Fang Chen, Ming-Tzer Lin
Summary: This study investigated the mechanical properties and residual stress of high-power impulse magnetron sputtering (HiPIMS) titanium nitride (TiN) thin film capping on a cold spray titanium (Ti) coating. The results showed that the TiN/Ti duplex coating exhibited excellent mechanical properties, and the residual stresses did not significantly change with different Ti cold spray substrates, indicating the feasibility of coating technology in the aerospace industry.
Editorial Material
Materials Science, Multidisciplinary
Song-Jeng Huang, Ming-Tzer Lin, Chao-Ching Chiang, Kavya Arun Dwivedi, Aqeel Abbas
Article
Chemistry, Multidisciplinary
Tra Anh Khoa Nguyen, Nhat Minh Dang, Chi-Hang Lin, Meng-Chieh Lee, Zhao-Ying Wang, Yao-Chuan Tsai, Ming-Tzer Lin
Summary: Zirconium-based metallic glass films prepared by RF magnetron sputtering were studied to investigate the effects of RF power and test temperature on their nanostructure, morphology, and creep behavior. The results showed significant influence of RF power and test temperature on the properties of the films.
Article
Engineering, Manufacturing
Kuan-Jung Chung, Cheng-Han Dai, Tung-Chun Chiang, June-Jia Xie, Ming-Tzer Lin
Summary: This study utilized AI to identify normal and abnormal vibrations occurring during robotic grinding. The study categorized the four fundamental factors affecting grinding into three levels to obtain a commonly used result, and designed an L-9(3(4)) orthogonal array for the grinding experiment. Abnormal vibrations were generated by adding weight to some of the grinding wheels, which were then measured by an accelerometer. The study converted the collected vibrations into recurrence plots and trained a model using the VGG16 CNN architecture. With a training accuracy of 89.6%, the model was able to identify whether the recurrence plots represented normal or abnormal vibrations with an accuracy of 85%, allowing for the prediction and prevention of issues caused by abnormal vibrations.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
(2023)
Article
Chemistry, Multidisciplinary
Nhat Minh Dang, Zhao-Ying Wang, Chi-Hang Lin, Ming-Tzer Lin
Summary: Thin metal films play a critical role in nano- and micro-fabricated technologies, with the texture orientation of the films significantly impacting the performance of the devices. This research investigated the texture transformation of thin films under different conditions and found that the presence of an adhesion layer and the application of initial stress both influenced the transformation. The results suggest that the texture transformation can be controlled through these factors.
Article
Education & Educational Research
Kate Tzu-Ching Chen
EDUCATION AND INFORMATION TECHNOLOGIES
(2020)
Article
Education & Educational Research
Kate Tzu-Ching Chen
IRANIAN JOURNAL OF LANGUAGE TEACHING RESEARCH
(2020)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)
