Article
Thermodynamics
Jaehoon Kim, Sung Hoon Kim, Jongho Lee, Jae Hun Seol
Summary: In this study, a thermally regenerative electrochemical cycle was implemented using three different commercial supercapacitors: a lithium-ion capacitor, a pseudocapacitor, and an electric double-layer capacitor. The results showed that the pseudocapacitor had the lowest energy loss rate among all the supercapacitors.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Amit Bhowmick, Balaram Kundu
Summary: A new system for waste heat recovery process, which combines cooling and power cycle, is proposed in this study. The thermodynamic and economic viability of the system is comprehensively analyzed. The results show that the combustion chamber is the major source of irreversibility and there is potential for improvement. A parametric study is conducted to assess the effect of major design parameters, and a multi-objective optimization is performed to determine the overall exergy efficiency and total product cost. The findings provide insights for practical applications and cost-effectiveness.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Yonggang Zhao, Yuewu Huang, Zhuo Chen
Summary: A novel coupling system is constructed to improve the solar energy conversion efficiency by utilizing the waste heat of AMTEC to generate electricity through TRECs. The study analyzes the impact of key parameters on system performance and provides optimal selection criteria. Numerical calculations demonstrate that the coupling system achieves higher efficiency and power output density compared to traditional systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Armin Abdollahipour, Hoseyn Sayyaadi
Summary: The study focused on a novel hybrid system combining molten carbonate fuel cells (MCFC) with thermally regenerative electrochemical cycles (TREC), where the influence of operating temperature on power output and efficiency, as well as the critical design parameters of TREC on system performance, were analyzed. It was found that TREC could be a favorable option for waste heat recovery of MCFC.
Article
Engineering, Environmental
Daofeng Mei, Amir H. Soleimanisalim, Anders Lyngfelt, Henrik Leion, Carl Linderholm, Tobias Mattisson
Summary: Manganese ore EB exhibits higher reactivity with syngas but lower reaction rate with CH4 compared to other manganese ores. Improving the contact between volatiles and bed material is crucial for enhancing combustion performance in the CLC process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Xiaona Zhang, Yuewu Huang, Zhuo Chen
Summary: This study proposes a coupled system to capture broadband sunlight, which consists of a photovoltaic module, thermally regenerative electrochemical cycles, and thermally regenerative electrochemical refrigerators. The system effectively improves energy efficiency and power density. The results provide valuable insights for the design and optimization of similar systems.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Somchart Chantasiriwan
Summary: This paper compares five configurations of regenerative Rankine cycle with two feed water heaters, discussing the maximum thermal efficiency, net power output, and installation costs for each configuration. The analysis shows that the maximum efficiency and power output vary with heater area, providing insights into optimal design choices for such cycles.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Environmental Sciences
Lluis Perez-Planells, Frank-M. Goettsche
Summary: The thermal dynamics of land surface, controlled by solar geometry, can be modeled using relatively simple functions. This study proposes a new model that simultaneously describes the annual and diurnal variation of surface temperature. The model was validated using LST observations and showed potential in describing surface and climate properties in different regions.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Ahreum Choi, You-Yeob Song, Juyoung Kim, Donghyeon Kim, Min-Ho Kim, Seok Woo Lee, Dong-Hwa Seo, Hyun-Wook Lee
Summary: This study investigates the role of structural vibration modes in enhancing the efficacy of TREC systems and analyzes how changes in bonding covalency, influenced by the number of structural water molecules, impact the vibration modes. It is discovered that even small amounts of water molecules can induce strong structural vibration energy, contributing significantly to a larger temperature coefficient (alpha) in a TREC system. Leveraging these insights, a highly efficient TREC system using a sodium-ion-based aqueous electrolyte is designed and implemented. This study provides valuable insights into the potential of TREC systems in enhancing energy-harvesting capabilities.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ahreum Choi, You-Yeob Song, Juyoung Kim, Donghyeon Kim, Min-Ho Kim, Seok Woo Lee, Dong-Hwa Seo, Hyun-Wook Lee
Summary: Low-grade heat (<100℃) is difficult to convert into usable energy with conventional systems. This study investigates the role of structural vibration modes in thermally regenerative electrochemical cycles (TREC) and discovers that changes in bonding covalency influenced by water molecules impact the vibration modes. Leveraging these insights, a highly efficient TREC system with a sodium-ion-based aqueous electrolyte is designed and implemented.
ADVANCED MATERIALS
(2023)
Article
Thermodynamics
Xin Tang, Guiqiang Li, Xudong Zhao
Summary: The combination of PV/T and TREC is an effective method to improve solar energy generation efficiency. The hybrid PV/T-TREC system outperforms traditional PV systems in most working conditions.
Article
Engineering, Environmental
Yanxi Yu, Ziwen Yuan, Zixun Yu, Cheng Wang, Xia Zhong, Li Wei, Yuanyuan Yao, Xiao Sui, Dong Suk Han, Yuan Chen
Summary: The extraction of lithium from seawater using electrochemical methods is dependent on temperature and concentration. Higher temperature and low lithium concentration can significantly increase the lithium extraction capacity and speed. The improved kinetics, rather than thermodynamic shifts, are responsible for the enhanced lithium extraction.
Article
Thermodynamics
Ruihua Chen, Shuai Deng, Li Zhao, Weicong Xu, Ruikai Zhao
Summary: This study develops a pseudo-two-dimensional flow and electrochemical coupled model to investigate the performance of continuous thermally regenerative electrochemical cycle (TREC). The polarization mechanism is revealed, and the effects of operating parameters and physical properties of electrolytes on the cycle performance are analyzed. The results show that concentration polarization is the major contributor to the system overpotential, and heat recuperation efficiency has a decisive effect on the efficiencies. Furthermore, electrolyte concentrations and temperature coefficient also affect the power density.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Physical
Xiaoya Li, Jia Li, Jeonghun Yun, Angyin Wu, Caitian Gao, Seok Woo Lee
Summary: Thermally regenerative electrochemical cycle (TREC) system is a promising technology for low-grade heat recovery, achieving high energy conversion efficiency. This continuously operated system converts heat to electricity by alternately operating two electrochemical cells at different temperatures. With a copper hexacyanoferrate cathode and a Cu/Cu2+ anode, the system achieves an energy conversion efficiency of 1.76% (14.19% of Carnot efficiency) between 10 and 50 degrees C. Even at a low temperature difference of 10 degrees C vs room temperature, the efficiency is 0.98%. The proposed system allows flexibility in electrode material selection, improving the practicality of low-grade heat harvesting with TREC systems.
Article
Energy & Fuels
Xin Tang, Guiqiang Li, Xudong Zhao
Summary: The study proposes a novel PV/T-TREC hybrid system that can improve overall electricity efficiency by converting thermal energy from PV/T into electricity. The research investigates the effects of heat recuperation and different working conditions on the overall electricity performance of hybrid systems.
Article
Energy & Fuels
Chukwunwike Iloeje, Randall Field, Ahmed F. Ghoniem
Article
Green & Sustainable Science & Technology
Chukwunwike Iloeje, Zhenlong Zhao, Ahmed F. Ghoniem
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2015)
Article
Energy & Fuels
Zhenlong Zhao, Chukwunwike O. Iloeje, Tianjiao Chen, Ahmed F. Ghoniem
Article
Energy & Fuels
Chukwunwike O. Iloeje, Zhenlong Zhao, Ahmed F. Ghoniem
Article
Engineering, Environmental
Chukwunwike O. Iloeje, Carlos F. Jove Colon, Joe Cresko, Diane J. Graziano
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Editorial Material
Materials Science, Multidisciplinary
Chukwunwike O. Iloeje, Fiseha Tesfaye, Alexandra E. Anderson
Editorial Material
Materials Science, Multidisciplinary
Chukwunwike O. Iloeje, Fiseha Tesfaye, Alexandra E. Anderson
Editorial Material
Materials Science, Multidisciplinary
Chukwunwike O. Iloeje, Fiseha Tesfaye, Alexandra E. Anderson, Joseph Hamuyuni
Article
Multidisciplinary Sciences
Chukwunwike O. Iloeje, Alinson Santos Xavier, Diane Graziano, John Atkins, Kyle Sun, Joe Cresko, Sarang D. Supekar
Summary: This study analyzes the feasibility and impact of recovering critical materials from spent nickel metal hydride batteries, and explores the potential of recycling to reduce primary imports and mitigate climate change.
Article
Biochemical Research Methods
Chukwunwike O. Iloeje, Alinson Santos Xavier, John Atkins, Kyle Sun, Audrey Gallier
Summary: This paper introduces the use of the open-source supply chain optimization package RELOG for robust design and analysis of optimal reverse logistics and manufacturing networks. It provides detailed instructions on installation, data assembly, problem modeling, optimization execution, result visualization, and analysis. The implementation presented focuses on battery recycling, but the package can be applied to various supply chains with different plants, products, and time periods. For more information on the protocol, refer to Xavier and Iloeje (2020)1 and Iloeje et al. (2022).2
Article
Energy & Fuels
Chukwunwike O. Iloeje, Zhenlong Zhao, Ahmed F. Ghoniem