Article
Energy & Fuels
Yuan Zhou, Jiangjiang Wang, Fuxiang Dong, Yanbo Qin, Zherui Ma, Yanpeng Ma, Jianqiang Li
Summary: This paper proposes a novel operational strategy for CCHP systems by analyzing system flexibility and evaluating design and operational performance using a flexibility index. A multi-objective optimization model is constructed to improve the economic performance and flexibility of the system.
Article
Thermodynamics
Ke Chen, Ming Pan
Summary: This paper introduces a novel superstructure CCHP system and uses deterministic modeling and optimization methods for CCHP operations, which outperforms traditional stochastic algorithms like Genetic Algorithm in adhering to demand constraints. Case studies demonstrate that the superstructure CCHP system achieves greater energy savings in large energy demand scenarios compared to single-structure CCHP systems.
Article
Multidisciplinary Sciences
Yu Zhang, Yan Deng, Zimin Zheng, Yao Yao, Yicai Liu
Summary: This paper aims to enhance the overall performance of the CCHP-GSHP system by using a battery to propose a new operation strategy. The power generation unit has two modes, non-operation and rated efficiency operation, controlled by the storage electricity battery. Compared with the traditional CCHP-GSHP system without a battery, the new operation strategy yields better performance.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Electrical & Electronic
Hongkun Li, Weidong Zheng, Tongyu Dai, Qiao Zhu, Weiqun Liu
Summary: This study investigates the application range and essential difference of the hybrid electric-thermal load operation strategy in CCHP systems. The results show that the electric load operation strategy is better than the thermal load operation strategy in terms of energy saving, economy, and environment when a large amount of heat is required. However, when electricity demand is high, the thermal load operation strategy can minimize energy loss. To achieve the best performance, the gas-to-electricity price ratio and the gas-to-electricity environmental impact ratio must exceed the efficiency of the power generation unit.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Thermodynamics
Ling-Ling Li, Sheng-Jie Zheng, Ming-Lang Tseng, Yu-Wei Liu
Summary: This study proposes a novel operation strategy named following the state of thermal storage tank (FST) to enhance the economic, energy and environmental performance of combined cooling, heating and power system. A system incorporating thermal storage tanks, batteries, micro turbines and photovoltaic generation units is built to assess the performance of different strategies. By using a multi-objective seagull optimization algorithm (MOSOA), the study achieves optimal solutions for economic, energy and environmental objectives simultaneously, highlighting the superiority of FST strategy over other strategies.
ENERGY CONVERSION AND MANAGEMENT
(2021)
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
Jiangjiang Wang, Yuan Zhou, Xutao Zhang, Zherui Ma, Yuefen Gao, Boxiang Liu, Yanbo Qin
Summary: This study proposes a life cycle assessment-based optimization model for hybrid solar-assisted CCHP system, aiming to reduce environmental impacts through multi-objective optimization with robustness considerations. Partially covered collectors can lower environmental impact by optimizing system configurations and energy compositions, making them more cost-effective and feasible.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Chunyan Lu, Jiangjiang Wang, Rujing Yan
Summary: This paper discusses the integration of an energy storage device into a CCHP system to address thermoelectric coupling limitations under dynamic uncertainty. It proposes a multiobjective optimization model for determining the optimal energy storage capacity and uses a probability-constrained method to handle load uncertainty. The economic and environmental performance of the CCHP system is evaluated through total annual cost and carbon dioxide emission assessment.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Muhammad Shahzad Nazir, Fahad M. Almasoudi, Ahmad N. Abdalla, Chang Zhu, Khaled Saleem S. Alatawi
Summary: In order to achieve the net-zero carbon target, the low carbon transition requires increased penetration of renewable generation in energy systems. Adequate flexible resources are essential to prevent curtailment of energy systems with high intermittent renewable output. This study focuses on the optimal dispatching model of a combined cooling, heating, and power microgrid with power-to-gas technology. The model demonstrates that power-to-gas improves the wind abandonment capacity of the microgrid and reduces environmental costs, resulting in economic benefits.
Article
Thermodynamics
Zepeng Han, Jiangjiang Wang, Zhiheng Cui, Chunyan Lu, Xiaoling Qi
Summary: The study introduces a novel full-spectrum solar-assisted methanol combined cooling, heating, and power system to improve comprehensive performance through optimization of energy efficiency, economics, and environmental impact. Results show that the comprehensive performance is optimal when the solar water heating area ratio is 0.5.
Article
Mathematics, Interdisciplinary Applications
Muhammad Shahzad Nazir, Sami ud Din, Wahab Ali Shah, Majid Ali, Ali Yousaf Kharal, Ahmad N. Abdalla, Padmanaban Sanjeevikumar
Summary: This paper discusses the economic model of a hybrid energy system, focusing on the combined cooling, heating, and power (CCHP) system within a microgrid (MG). By optimizing the random forest regression (RFR) model using the gravitational search algorithm (GSA), prediction accuracy is improved and generalization error is reduced. The analysis includes energy utilization indices, cost-effectiveness, and energy efficiency comparisons under different operational conditions.
Article
Green & Sustainable Science & Technology
Jiangjiang Wang, Xiaoling Qi, Fukang Ren, Guoqing Zhang, Jiahao Wang
Summary: This study presents a multi-objective stochastic optimization model of a hybrid CCHP system considering uncertainties and uses the non-dominated sorting genetic algorithm-II to optimize the system to achieve the best energy, economic, and environmental benefits. The results show that lower system reliability leads to more energy-saving and greenhouse emission reduction benefits, but the annual cost saving rate is affected by system confidence level and uncertainty. Sensitivity analysis demonstrates that the annual cost saving rate is more sensitive to natural gas price, while the investment cost of solar collectors has a stronger impact than gas turbine.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Engineering, Chemical
Mohammad Ali Bagherian, Kamyar Mehranzamir, Shahabaldin Rezania, Zulkurnain Abdul-Malek, Amin Beiranvand Pour, Seyed Morteza Alizadeh
Summary: Energy systems integration is crucial for meeting the growing energy demands and addressing the depletion of fossil fuels, as it enables energy saving, fuel diversification, and the supply of cleaner energy. Bioenergy utilization in cogeneration and trigeneration systems is evaluated, along with common research objectives related to biomass-fueled combined heat and power systems. The analysis discusses the influencing parameters of biomass utilization on energy and exergy analysis, thermo-economic optimization, and environment assessment, emphasizing the importance of feedstock properties, conversion technology, costs, and sustainability.
Article
Energy & Fuels
Jie Chen, Shoujun Huang, Laleh Shahabi
Summary: The study aims to develop a multi-objective model considering energy, economic, and environmental factors, using an optimized multi-objective algorithm to effectively implement combined cooling, heating, and power systems. The results show that the system not only improves performance but also saves energy costs, demonstrating advantages in solving conflicting objectives.
Article
Green & Sustainable Science & Technology
Xiangming Zhao, Jianxiang Guo, Maogang He
Summary: This study proposes an improved optimization method that improves decision variables by reorganizing, re-optimizing, and re-selecting the initial optimized population. The method comprehensively analyzes optimization solutions in terms of energy, economy, and environment and obtains simplified systems to promote project implementation.
Article
Thermodynamics
G. Yang, J. Y. Wu
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2015)
Article
Thermodynamics
Jialong Wang, Jingyi Wu
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
(2015)
Article
Thermodynamics
C. Y. Zheng, J. Y. Wu, X. Q. Zhai, G. Yang, R. Z. Wang
Article
Thermodynamics
G. Yang, J. Y. Wu
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2016)
Article
Chemistry, Physical
Kaizhong Yang, Jingyi Wu, Chunyu Li, Yu Xiang, Guang Yang
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Thermodynamics
Xin Cheng, Guang Yang, Jingyi Wu
Summary: This review comprehensively discusses the inherent mechanisms, optimization strategies, and fabrication technologies of evaporator wicks in vapor chambers, highlighting the trend of improving thermal performance and suggesting future research directions.
APPLIED THERMAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Ye Wang, Yilin Lin, Guang Yang, Jingyi Wu
Summary: This study investigates the wicking performance of woven screens through horizontal spreading experiments, finding that multilayer structures enhance wicking capability significantly and hydrophilic nanograsses improve water wicking ability. The spreading mechanism of liquids varies in different woven screen structures.
Article
Thermodynamics
Rongrong Lv, Yonghua Huang, Jingyi Wu
Summary: The study investigates the effects of scale on pressurization in cryogen storage tanks in space, finding that geometric scale only significantly influences pressurization rate in small-scale tanks. The causes of self-pressurization during the pressurization process are related to geometric scale, including direct sensible energy input of vapor, mass transfer on the liquid-vapor interface, and liquid thermal expansion. The findings can be utilized for pressurization prediction in various aerospace applications.
APPLIED THERMAL ENGINEERING
(2021)
Article
Chemistry, Physical
Kaizhong Yang, Guang Yang, Jingyi Wu
Summary: The study quantified the site heterogeneity for CO2 adsorption on NaX, finding that the distance between C and O-z serves as an indicator of heterogeneity controlled by interacting cations. The calculated adsorption heats and isotherms based on heterogeneity-based models matched experimental results for NaX and NaY.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Thermodynamics
J. Y. Wu, R. R. Lv, Y. Y. Huang, G. Yang
Summary: The study investigates the flow structure transition and hysteresis phenomenon induced by a transverse buoyant jet using the large eddy simulation approach with the dynamic Smagorinsky model and Favre-averaging method. Two stable flow structures are observed for different dimensionless parameters, and a hysteresis phenomenon is found in the flow structure transition. Critical points of transition for different hysteresis curves are highlighted in a Reynolds-number-Rayleigh-number map, indicating three flow-regime zones.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
J. Y. Wu, R. R. Lv, Y. Y. Huang, G. Yang
Summary: In this study, the mixed convection induced by transverse buoyant jet inside a large thermal cycling chamber with perforated plates was investigated experimentally and numerically. The results show significant effects of the pressure loss coefficient and the plenum height on the temperature distribution and fluctuation, where the flow characteristics are influenced by multiple forces. For larger pressure loss coefficients, the temperature uniformity in the test zone is greatly improved.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Ye Wang, Zheng Wang, Xin Cheng, Guang Yang, Jingyi Wu
Summary: Surface tension plays a significant role in the gas-liquid interface under microgravity. Passive phase separation using porous materials shows promise for liquid management in this environment. This study experimentally investigates the pressure-driven phase separation mechanism, emphasizing the influence of single-phase flow, breakthrough failure, and self-healing ability on liquid acquisition capability. Moreover, a fabrication strategy is proposed and verified to increase the breakthrough threshold pressure without introducing extra flow resistance.
Article
Mechanics
Mingkun Xiao, Guang Yang, Yonghua Huang, Jingyi Wu
Summary: The distribution of the gas-liquid interface is crucial to accurate calculation of cryogenic propellant flow and heat transfer. A unified code based on OpenFOAM was developed to evaluate four interface-capturing methods, and the CLSVoF-DSB method was found to be the most accurate in predicting interface motion.
Article
Thermodynamics
Han Chen, Guang Yang, Jingyi Wu
Summary: This study presents a novel aging model for accurately predicting LNG aging during long-term operation. The model divides the LNG tank into five zones and considers the variation of thermal conductivity with temperature. Model validation and simulations show improved accuracy compared to previous models. The study also reveals the impact of initial LNG composition on the BOG rate.
Article
Chemistry, Physical
Guang Yang, Juan Liu, Xin Cheng, Ye Wang, Xu Chu, Soumya Mukherjee, Alexandros Terzis, Andreas Schneemann, Weijin Li, Jingyi Wu, Roland A. Fischer
Summary: The integration of a metal-organic framework film into a metallic woven mesh increased liquid rewetting and capillary-driven evaporation and boiling heat transfer significantly. Analysis of multiple interfaces during capillary wicking process facilitated quantitative analysis of coupled capillary evaporation. This approach provides fundamental insights into transport phenomena and enhances passive thermal management technologies.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.
