Article
Energy & Fuels
Y. Nandakishora, Ranjit K. Sahoo, S. Murugan, Sai Gu
Summary: Carbon capture by cryogenic treatment is an emerging method for reducing CO2 emissions, offering energy-saving and environmental benefits. This study focuses on analyzing a plate-fin heat exchanger (PFHE) for decreasing the temperature of CO2 and N-2 mixture, and it includes a comparative study of heat exchanger parameter evaluation correlations, software validation with experimental results, and investigating the influence of gas mixture inlet temperature, CO2 concentration, pressure drop, and mass flow rate on PFHE effectiveness.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Pengfei Yu, Hu Liu, Sai Zhou, Defu Che
Summary: This paper proposed a cryogenic power generation system using waste heat and LNG cold energy, and conducted performance analysis to determine the optimal working fluid combination and system performance indicators. The specific power decreases with the increase of LNG flow rate, and R1270/R1150 becomes the best working fluid combination when the LNG flow rate exceeds 120.28 kg/s.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Analytical
Jiawei Jiang, Shiqiang Liang, Xiang Xu, Buze Chen, Zhixuan Shen, Chaohong Guo, Liqi Yu, Shuo Qin
Summary: This paper presents the results of an experimental study on a novel spiral plate mini-channel gas cooler designed for supercritical CO2. The CO2 channel has a circular spiral cross-section while the water channel has an elliptical cross-section spiral channel. The results indicate that increasing the mass flux of CO2 and inlet water temperature can enhance the overall heat transfer coefficient. The study also found that the gas cooler performs better when vertically oriented compared to horizontally oriented, and verified the accuracy of a correlation method using Matlab.
Article
Thermodynamics
Chendi Yang, Xiaopeng Zhang, Ning Zhang, Gaohong He, Junjiang Bao
Summary: This study addresses the trade-off between thermodynamic and economic performance of supercritical CO2 Brayton cycles through multi-objective optimization of cycle superstructures. The results show that the superstructures have advantages over traditional structures in terms of trade-off solution performance and structure selection.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Lianbo Mu, Suilin Wang, Junhui Lu, Guichang Liu, Liqiu Zhao, Yuncheng Lan
Summary: This study investigates the effects of flue gas waste heat recovery and pressure drop on energy saving and carbon reduction in a refinery heating furnace. By adding a flue gas condensing heat exchanger (FGCHE) at the furnace exhaust, the maximum energy saving and emissions reduction under normal operating conditions are analyzed. The results show that reducing the flue gas temperature and pressure drop can significantly improve energy saving and carbon reduction.
Article
Thermodynamics
Pai Wang, Minxia Li, Qifan Wang, Baomin Dai, Yitai Ma, Hua Tian
Summary: In this study, the condensation heat transfer characteristics of the CO2/R32 mixture in a mini-channel with a diameter of 2 mm were investigated. The results showed that the convective heat transfer coefficient decreased with an increase in CO2 content, and the minimum value was obtained at approximately 55% CO2 content. Higher vapor quality and mass flow rate conditions corresponded to higher convective heat transfer coefficients. The prediction correlations and friction pressure drop correlations for CO2/R32 were analyzed, and the Kim and Mudawar correlations were recommended. This study provides theoretical support for analyzing the condensation heat transfer mechanism of a CO2/R32 mini-channel.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Alireza Zendehboudi, Zuliang Ye, Armin Hafner, Trond Andresen, Geir Skaugen
Summary: This paper investigates the heat transfer and pressure drop characteristics of supercritical CO2 in brazed plate heat exchangers, finding that thermal resistance in the CO2 side is the main factor affecting total heat transfer. Increasing CO2 mass flow rate significantly improves heat transfer coefficients, and factors such as water flow rate, CO2 pressure, and buoyancy force also play a role in heat transfer under different operating conditions.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Qinglong Jin, Shaojun Xia, Lingen Chen
Summary: A modified recompression S-CO2 Brayton cycle (RCSCBC) is proposed, incorporating the advantages of the preheated S-CO2 Brayton cycle (PSCBC), for recovering waste heat from a gas turbine. This modified cycle considers finite temperature difference heat transfer, irreversible compression, irreversible expansion, and other irreversibility losses. Performance analyses and optimization show that the modified RCSCBC outperforms the unmodified RCSCBC and the PSCBC in terms of net power output and thermal efficiency.
Article
Thermodynamics
Min Cheng, Zi-yong Chen, Qiang Liao, Yu-heng Gu, Yu-dong Ding
Summary: The study investigated the impact of ash deposition on the heat transfer process of 3-D finned tube heat exchanger, and explored various influencing factors using orthogonal array design method. By determining the optimized parameters, the heat transfer performance of the heat exchanger was improved, providing a reference for the design and evaluation of heat exchangers in dusty environments.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Physics, Multidisciplinary
Liangtao Xie, Jianguo Yang
Summary: The study has completed the research on the performance modulation method of the S-CO2 Brayton cycle for flue gas waste heat in the marine low-speed engine. The system efficiency has been further improved with waste heat modulation, leading to reductions in fuel consumption rate and CO2 emissions. The SCRBC system with the addition of waste heat modulation shows increased efficiency at different load levels and significant CO2 emission reductions at 50% load.
Article
Thermodynamics
A. Vannoni, A. Giugno, A. Sorce
Summary: This research aims to propose an innovative solution to enhance the flexibility of CCGT plants by integrating them with a flue gas condensing heat pump. The heat pump increases overall efficiency and reduces CO2 emissions, but its higher capital expenditure limits the viability of the investment, only becoming feasible when the ratio between natural gas prices and electricity prices is high.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Wannarat Rakpakdee, Suphakorn Tuntarungsri, Mongkol Pornnattawut, Masaaki Motozawa, Mitsuhiro Fukuta, Weerachai Chaiworapuek
Summary: By altering the configuration of the inlet flow channel, the heat transfer and pressure drop of water flow in double vertical coils and a shell heat exchanger were investigated under 28 kHz ultrasound. The position of activated ultrasonic transducers at P1-P9 was examined for its effects. The results showed that modifying the inlet flow configuration from two to four channels enhanced the Nusselt number by 11.6% on the shell side and increased the heat transfer capability by approximately 9% with ultrasonic irradiation.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Ji-chao Yang, Behrooz Sobhani
Summary: A novel cogeneration system based on a combination of gas turbine cycle, supercritical CO2 cycle, and Kalina cycle is designed, with high energy and exergy efficiencies, enhanced heating capacity with key parameters, and lower sum unit cost of the product. Economic analysis reveals significant payback period and net present value for the system.
Article
Thermodynamics
Hongqiang Ma, Nuo Liang, Yemin Liu, Xinmei Luo, Caiqin Hou, Gang Wang
Summary: The new system recovers waste heat from sulfide-containing flue gas using phase change heat transfer theory. Results show that a high heat load ratio improves the heat recovery coefficient but has a negative impact on exergy efficiency.
Article
Thermodynamics
Saeed Vahidifar, Seyedhadi Banihashemi
Summary: Researchers have conducted numerous studies on active and passive methods to improve thermal performance and increase heat transfer in internal flows. Different geometries and configurations of turbulators have been proposed for optimal performance in heat exchangers. However, there is limited research on turbulators with equal obstruction inside the tube and aerodynamic geometry. This study investigates the effect of stimulating the boundary layer of the internal flow on heat transfer and flow characteristics, using a pipe with ring-shaped turbulators and equal blocking area.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Thermodynamics
Jia-Qi Guo, Ming-Jia Li, Jin-Liang Xu, Jun-Jie Yan, Teng Ma
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Thermodynamics
Jian Xie, Qingting She, Jinliang Xu, Cong Liang, Wenxiao Li
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2020)
Article
Chemistry, Multidisciplinary
Yang Shen, Yongpan Cheng, Jinliang Xu, Kai Zhang, Yi Sui
Article
Thermodynamics
Mingjia Li, Ge Wang, Jinliang Xu, Jingwei Ni, Enhui Sun
Summary: The benefits of large-scale supercritical CO2 coal-fired power plants are analyzed and compared with ultra-supercritical water-steam Rankine cycle coal-fired power plants in terms of energy environment and economy. The results show that the S-CO2 coal-fired power generation system outperforms the USC coal-fired power generation system in terms of energy consumption, resource depletion, environmental impact, and investment cost.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Thermodynamics
Haisong Zhang, Jinliang Xu, Xinjie Zhu, Jian Xie, Mingjia Li, Bingguo Zhu
Summary: This paper investigates the relationship between pressure drop and heat transfer in supercritical carbon dioxide (sCO(2)), introducing the concept of pseudo-boiling to characterize the flow and heat transfer in the supercritical domain. Different regimes of heat transfer behavior and pressure drops are identified, with a new correlation for friction factors developed to better predict the results in sCO(2) systems.
APPLIED THERMAL ENGINEERING
(2021)
Article
Physics, Multidisciplinary
Guanglin Liu, Qingyang Wang, Jinliang Xu, Zheng Miao
Summary: The study focuses on the subcritical saturated organic Rankine cycle system with four different organic working fluids at various heat source temperatures. It concludes that the efficiency of the two-stage system is affected by the choice of organic working fluids and is higher than that of a single-stage system.
Article
Thermodynamics
Xiongjiang Yu, Jinliang Xu, Guohua Liu, Xianbing Ji
Summary: A new concept of phase-separation evaporator is proposed in this study, where flow instabilities can be suppressed by using gradient pinfin-porous wall microchannels. The high-frequency release of vapor bubbles and stable heat transfer in bare channels enable stable heat transfer under different operating parameters.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Jinliang Xu, Xue Wang, Enhui Sun, Mingjia Li
Summary: The economic comparison between the sCO2 power cycle and the water-steam Rankine cycle shows that the sCO2 power system achieves a higher net power generation efficiency but also slightly higher overall specific cost compared to the water-steam system. Optimizing the recuperator could potentially decrease the specific cost of the sCO2 power system in the future.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Enhui Sun, Hongfu Ji, Wenjing Ma, Jinliang Xu, Lei Zhang, Yanjuan Wang
Summary: This paper proposes a constituent split method suitable for the analysis of semi-closed S-CO2 cycle (SC), which splits the cycle into an open cycle of fuel and oxidant and a closed S-CO2 cycle. The method deepens the understanding of the cycle and improves its thermal efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Zhaofu Wang, Enhui Sun, Jinliang Xu, Chao Liu, Guanglin Liu
Summary: This study examines the impact of using flue gas cooler and overlap energy utilization on the supercritical carbon dioxide cycle, suggesting that overlap energy utilization is more suitable than flue gas cooler. Additionally, a double-channel-tail-flue concept is proposed to increase system thermal efficiency.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Chunlei Cao, Xiaojing Ma, Xiaotian He, Jinliang Xu, Jian Xie, Guohua Liu
Summary: The study demonstrates that using a soft surface can significantly enhance boiling heat transfer efficiency, especially under saturated boiling conditions. The soft surface can reduce bubble departure size and increase departure frequency, thereby lowering the wall superheating temperature. The formation of elastocapillary waves and dynamic wrinkles can improve heat transfer effect by disturbing the near-wall boundary layer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Review
Thermodynamics
Hao Guo, Xianbing Ji, Jinliang Xu
FRONTIERS IN HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Longyan Zhang, Jinliang Xu, Guangling Liu, Junpeng Lei
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2020)
Review
Chemistry, Physical
Guohua Liu, Ting Chen, Jinliang Xu, Gang Li, Kaiying Wang
JOURNAL OF MATERIALS CHEMISTRY A
(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)