Article
Thermodynamics
Minghui Ge, Zhenhua Li, Yulong Zhao, Liyao Xie, Shixue Wang
Summary: A thermoelectric generator generates electricity by recovering waste heat from automobile exhaust, utilizing gasification and condensation of the medium to improve power density. The exhaust temperature affects maximum output power, while the optimal module area increases with increasing exhaust flow.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Energy & Fuels
Yulong Zhao, Mingjie Lu, Like Yue, Liyao Xie, Minghui Ge
Summary: This study proposes the addition of porous plates in vehicle exhaust to improve the thermoelectric conversion efficiency of waste heat. A coupled heat-electric-flow model is constructed and simulation results show that the addition of porous plates has a significant impact on the overall temperature of the exhaust channel. An optimal insertion position exists for maximum power generation.
Article
Energy & Fuels
Yulong Zhao, Mingjie Lu, Yanzhe Li, Minghui Ge, Liyao Xie, Liansheng Liu
Summary: The article introduces a new design of thermoelectric generator, which improves overall thermoelectric performance by enhancing heat transfer in the exhaust channel. The research finds that the net output power of the new generator can be significantly increased, while the number of modules can be greatly reduced.
Article
Chemistry, Physical
Seong Eun Yang, Fredrick Kim, Faizan Ejaz, Gi Seung Lee, Hyejin Ju, Seungjun Choo, Jungsoo Lee, Gyeonghun Kim, Soo-ho Jung, Sangjoon Ahn, Han Gi Chae, Kyung Tae Kim, Beomjin Kwon, Jae Sung Son
Summary: Segmented thermoelectric generators (TEGs) composed of multiple TE elements can achieve high efficiency without ZT losses, but face challenges related to material compatibility. In this study, multi-material 3D printing of segmented BiSbTe materials was achieved, showing promise for optimizing TEGs.
Article
Thermodynamics
Giovanni Pennelli, Elisabetta Dimaggio, Massimo Macucci
Summary: Thermoelectric generator devices have great potential for energy scavenging and green energy harvesting. Researchers proposed a straightforward approach using an equivalent electric circuit model to support the design and optimization of thermoelectric systems, considering both thermal and electrical issues.
Article
Thermodynamics
Yulong Zhao, Yucong Fan, Minghui Ge, Liyao Xie, Zhenhua Li, Xiangyang Yan, Shixue Wang
Summary: This study established a mathematical model of an intermediate-fluid TEG system and analyzed the influences of cooling methods and condensed-boiling heat transfer performance in the cavity on the thermoelectric performance. The results showed that the new generator exhibited better characteristics under both water-cooling and air-cooling methods.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Review
Thermodynamics
Nicolae Vlad Burnete, Florin Mariasiu, Christopher Depcik, Istvan Barabas, Dan Moldovanu
Summary: With the growing emphasis on electrified vehicles, the use of internal combustion engines (ICEs) as the primary propulsion source is being challenged, necessitating improvements in efficiency and emissions. Recovering waste heat from the ICE can enhance overall thermal efficiency, and thermoelectric generators offer advantages such as environmental friendliness, reliability, and direct conversion of thermal energy into electrical energy. This study provides a comprehensive overview of the use of thermoelectric generators for waste heat recovery in ICEs, presenting experimental and simulation results on power output, efficiency gains, and fuel consumption reduction. It also summarizes the design considerations for the hot side heat exchanger.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2022)
Article
Energy & Fuels
Wei-Hsin Chen, Yi-Bin Chiou, Rei-Yu Chein, Jun-Yen Uan, Xiao-Dong Wang
Summary: Utilizing low-temperature waste heat for power generation is a promising method, and the study shows that the number of partitions in a thermoelectric module does not significantly affect its performance. The installation of fins greatly intensifies heat transfer and improves the performance of thermoelectric modules.
Article
Thermodynamics
Yuanyuan Tian, Anbang Liu, Junli Wang, Yajie Zhou, Chengpeng Bao, Huaqing Xie, Zihua Wu, Yuanyuan Wang
Summary: The study investigates the impact of phase change temperature of phase change material (PCM) on the output power and generated electricity of PCM-TEG system. Results show that optimizing the phase change temperature of PCM can enhance the total generated electricity by as much as 15.6% through matching PCM with thermoelectric properties of the thermoelement. Furthermore, a relationship between the optimal phase change temperature of PCM and the temperature for maximum figure of merit (ZT) of the thermoelement is established, providing a selection criterion for PCM in TEG modules.
Article
Energy & Fuels
Lei Tian, Lingen Chen, Tingting Ren, Yanlin Ge, Huijun Feng
Summary: Based on the multi-element thermoelectric generator model, the efficient power expression of the thermoelectric generator is derived using finite-time thermodynamic theory. The effects of the number of thermoelectric elements and the total heat exchanger area on the maximum efficient power are analyzed. The results show the importance of optimizing heat exchangers area distribution and output current to maximize the efficient power of the thermoelectric generator.
Article
Thermodynamics
Yulong Zhao, Mingjie Lu, Yanzhe Li, Yulin Wang, Minghui Ge
Summary: This study investigates the effect of inserting a perforated plate on the performance of an exhaust thermoelectric generator through the construction of a mathematical model. The findings show that the insertion of the perforated plate increases the output power of the generator and an optimal installation position exists. Furthermore, the position of the perforated plate affects the voltage evenness of the modules, with the most uniform voltage distribution observed when the plate is in the middle of the third row of modules.
Article
Thermodynamics
Kartik Srivastava, Rashmi Rekha Sahoo
Summary: This study examines a new vortex generator installed on the hot side of a thermoelectric generator's exhaust heat exchanger and analyzes its performance using numerical methods. The experiment identifies the best design configuration for the vortex generator to optimize power output in a waste heat recovery system. The results show that the configuration with a pitch/channel height ratio of 3 and a tilt angle of 60 degrees achieves the highest power output. Additionally, the study finds that the vortex generator can improve the fuel consumption efficiency of the engine.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Minghui Ge, Zhenhua Li, Yeting Wang, Yulong Zhao, Yu Zhu, Shixue Wang, Liansheng Liu
Summary: This study designed and built a thermoelectric power generation system for cold energy. The experimental results showed that the temperature difference between the hot and cold ends increased in the liquid-phase and two-phase regions, but decreased and then increased in the gas-phase region. The poor heat transfer capacity at the hot end of the generator restricted the improvement of the temperature difference at the hot and cold ends.
Article
Energy & Fuels
Wei Niu, Xiaoshan Cao
Summary: This paper presents an explicit analytical solution for the maximum output power of annular thermoelectric generators (ATEG), which has been proven to be highly accurate. The maximum output power between ATEG and trapezoidal thermoelectric generator (TTEG) is then compared, and the results show that the relative error can reach the order of 10(-3) for the appropriate geometric parameter delta. The explicit analytical results of ATEG can provide some reference for the performance optimization of TTEG under suitable working conditions, with relative errors of 0.0261% and 0.074% for Bi2Te3 and PbTe materials.
Article
Chemistry, Physical
Longbing Yi, Haowei Xu, Haibing Yang, Shaolin Huang, Hao Yang, Yanan Li, Qiang Zhang, Zhe Guo, Haoyang Hu, Peng Sun, Xiaojian Tan, Guoqiang Liu, Kun Song, Jun Jiang
Summary: A theoretical model was developed to analyze the Bi2Te3-based TEG system, and the results showed that increasing the height of TEG not only improves conversion efficiency but also leads to a peak value of output power. The height of the fin plays a more essential role than the thickness of the fin in optimizing the performance of TEG. By adding an electrical fan, the net output power is doubled and the net conversion efficiency is improved by more than 80%. The study also designed the structure of the TEG system for different material parameters using the theoretical method.
JOURNAL OF POWER SOURCES
(2023)
Article
Thermodynamics
Wei He, Shixue Wang, Yulong Zhao, Yanzhe Li
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Thermodynamics
Wei He, Shixue Wang, Yanzhe Li, Yulong Zhao
ENERGY CONVERSION AND MANAGEMENT
(2016)
Article
Thermodynamics
Minghui Ge, Shixue Wang, Jun Zhao, Yulong Zhao, Liansheng Liu
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2016)
Article
Thermodynamics
Yulong Zhao, Shixue Wang, Minghui Ge, Yanzhe Li, Zhaojun Liang
ENERGY CONVERSION AND MANAGEMENT
(2017)
Article
Thermodynamics
Yulong Zhao, Shixue Wang, Minghui Ge, Yanzhe Li, Yurong Yang
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Thermodynamics
Minghui Ge, Shixue Wang, Jun Zhao, Yulong Zhao, Liansheng Liu
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2018)
Article
Thermodynamics
Yanzhe Li, Shixue Wang, Yulong Zhao
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2018)
Article
Energy & Fuels
Aibin Yan, Jun Zhao, Qingsong An, Yulong Zhao, Hailong Li, Yrjo Jun Huang
Article
Energy & Fuels
Yulong Zhao, Shixue Wang, Minghui Ge, Yanzhe Li, Zhaojun Liang, Yurong Yang
Article
Thermodynamics
Yulong Zhao, Like Yue, Shixue Wang, Linjun Li, Fei Wang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2018)
Article
Thermodynamics
Minghui Ge, Zixuan Wang, Liansheng Liu, Jun Zhao, Yulong Zhao
ENERGY CONVERSION AND MANAGEMENT
(2018)
Article
Energy & Fuels
Yulong Zhao, Shixue Wang, Minghui Ge, Zhaojun Liang, Yifan Liang, Yanzhe Li
Article
Thermodynamics
Minghui Ge, Xiaowei Wang, Yulong Zhao, Shixue Wang, Liansheng Liu
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Energy & Fuels
Yanzhe Li, Shixue Wang, Yulong Zhao, Chi Lu
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)