Article
Energy & Fuels
Morteza Zare Oskouei, Behnam Mohammadi-Ivatloo, Ozan Erdinc, Fatma Gulsen Erdinc
Summary: This study aims to fill the research gaps regarding the optimal coordination of hydrogen-based energy hubs and distribution networks. A multi-objective framework is developed to handle the risk-constrained operation problem for the distribution networks, using a hybrid robust-stochastic programming model to handle uncertainty. The results demonstrate significant reductions in operation cost, renewable power curtailment, and CO2 emission cost if hydrogen-based energy hubs are employed by operators.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Thermodynamics
Junjie Zhong, Yijia Cao, Yong Li, Yi Tan, Yanjian Peng, Lihua Cao, Zilong Zeng
Summary: A distributed synergistic model with min max-min robust optimization is proposed for a 3-block integrated energy system, which effectively handles multiple uncertainties and accelerates the solution process with the developed C&CG-AOP algorithm. The simulation results show that the constructed uncertainty set considering spatial-temporal correlation and symmetry can reduce operating costs.
Article
Energy & Fuels
Lintong Liu, Rongrong Zhai, Yangdi Hu
Summary: Identifying primary sources of exergy destruction and improving system efficiency through advanced exergy analysis in multi-energy supply systems. This study focuses on a wind-solar-hydrogen multi-energy supply system and develops a co-optimization model to optimize power generation and performance. The findings reveal the sequence of optimization potential for the system and provide valuable guidance for improving energy efficiency and reducing costs.
Article
Energy & Fuels
Humphrey Adun, Michael Adedeji, Victor Adebayo, Ali Shefik, Olusola Bamisile, Doga Kavaz, Mustafa Dagbasi
Summary: This study investigates the thermodynamic performance of a Kalina cycle incorporated with parabolic trough collectors utilizing ternary nanofluids, showing that using nanofluids as working fluid can enhance system performance. The results reveal that different types of nanofluids have varying effects on system performance, with Al2O3, Al2O3-Fe, Al2O3-ZnO, and CuO-MgO-TiO2 nanoparticles showing promising results. The optimization study demonstrates that the maximum net power output and exergetic efficiency of the system can be significantly improved when using these nanofluids.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Thermodynamics
Biao Li, Yong'an Deng, Zexi Li, Jianxin Xu, Hua Wang
Summary: This investigation presents a new RBF-NSGA-II optimization algorithm and explores the thermal economy of different bottom combined cycles under 16 design parameters. The results show that the combined cycle efficiency is improved by 25.2% and the exergy loss is reduced by 32% when using NSGA-II and RBF-NSGA-II optimization algorithms. Furthermore, the study analyzes the sensitivity of different parameters on the performance of combined cycles.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Jiayin Song, Chao Lu, Qiang Ma, Hongwei Zhou, Qi Yue, Qinglin Zhu, Yue Zhao, Yiming Fan, Qiqi Huang
Summary: This paper proposes an integrated synthesis of adaptive multi-objective particle swarm optimization algorithm (ISAMOPSO) to solve the reactive power optimization problem in power systems. Through experiments, it is proven that the ISAMOPSO algorithm has stronger global search capability and better convergence. Moreover, the algorithm can be flexibly applied to different needs and achieve dynamic optimization.
Article
Engineering, Marine
Yuxin Zhang, Yang Xiao, Qihe Shan, Tieshan Li
Summary: To reduce fuel-based energy consumption, it is crucial to investigate the optimal energy management for seaport integrated energy system in a fully distributed manner. A multi-objective energy management model is constructed, taking into account energy consumption, greenhouse gas emissions, and carbon trading to meet the sustainable development goals of the international shipping industry. Integrated carbon capture/storage devices are implemented to constrain the carbon emissions of the seaport. A fully distributed energy management strategy with dynamic-weighted coefficients is proposed to obtain the optimal solutions. Additionally, an event-triggered mechanism is designed to reduce communication resources, addressing the bandwidth limitation of the seaport. A rigorous mathematical analysis based on multi-agent theory and case studies demonstrates the effectiveness of the proposed method.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Ping Li, Henan Dong, Guanfeng Zhang, Xue Bai, Xin Zhao
Summary: This paper investigates the impact of the location and capacity of distributed power plants on the power flow and losses in the grid, and proposes an optimization method using the improved gray wolf optimization algorithm. Experimental results show that this method can effectively reduce the active power losses in the distribution network.
Article
Engineering, Electrical & Electronic
Tiago S. Vitor, Jose Carlos M. Vieira
Summary: This study introduces a specialized evolutionary system for voltage optimization in power systems, which efficiently solves multi-objective optimization problems and improves the performance of operation planning and decision-making methods, leading to cost savings.
ELECTRIC POWER SYSTEMS RESEARCH
(2021)
Article
Thermodynamics
Jingze Yang, Zhen Yang, Yuanyuan Duan
Summary: The study proposed a hybrid renewable energy system with the optimal combination obtained through a multi-objective optimization algorithm. It was found that the combination of CSP plant and PV plant is an effective way to improve power generation reliability. The recommendation is to use power cycle to supplement power shortages.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Energy & Fuels
Dhivya Swaminathan, Arul Rajagopalan
Summary: This article introduces a meta-heuristic population-based tangent golden flower pollination algorithm to select the ideal location for distributed generation and find the optimal routing configuration for power flow. The algorithm has few tuning parameters and provides highly reliable results, with good performance demonstrated on various test bus systems.
Article
Thermodynamics
Di Wu, Zhonghe Han, Zhijian Liu, Peng Li, Fanfan Ma, Han Zhang, Yunxing Yin, Xinyan Yang
Summary: This study established the theoretical model and optimization scheme for integrated energy system, and conducted a case study to determine optimal nominal capacity and operation parameters for different scenarios. By adopting self-adaption strategy and optimization scheme, the system cost can be effectively reduced and the economic efficiency can be improved. The applicability of building-scale and district-scale integrated energy systems in terms of economy was compared, and a collaborative optimization method was introduced to further reduce system cost.
Article
Thermodynamics
Du Wen, Muhammad Aziz
Summary: The introduction of green hydrogen and ammonia mediums into integrated renewable multi-generation systems can address the issue of uneven distribution of renewable energy. Through thermodynamic investigation and dynamic evaluation, this study found that the system demonstrated high overall energy efficiency and great potential for development in cities like Shenyang, Shanghai, Kunming, and Harbin.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Ting Wu, Siqi Bu, Xiang Wei, Guibin Wang, Bin Zhou
Summary: The paper introduces a grid-connected integrated energy system that considers biogas-solar-wind complementarities and applies digester heating for biogas production. A multi-objective optimization model is used to optimize operational cost, carbon dioxide emission, and energy loss, while comparing the system to a natural gas-solar-wind IES. The study also presents an improved multitasking paradigm within the domain of multi-objective optimization to enhance convergence characteristics and performance evaluation.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Thermodynamics
Rashin Khera, Akhilesh Arora, B. B. Arora
Summary: This paper evaluates the thermodynamic performance of a vortex tube integrated single-stage vapour compression refrigeration cycle. The study reveals that the cooling capacity, COP, and exergetic efficiency of the vortex tube cycle are higher than those of a simple vapour compression refrigeration cycle. The evaporator temperature is found to be the major decisive parameter in determining the suitability of the vortex tube system for various applications.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2023)
Article
Thermodynamics
Haoran Li, Chenghui Zhang, Bo Sun
Summary: The research proposes a new design method for integrated energy systems, which improves the stability and reliability of system performance through innovative operation modes and design methods, successfully reducing energy consumption, costs, and carbon emissions.
Article
Green & Sustainable Science & Technology
Haoran Li, Chenghui Zhang, Bo Sun
Summary: This study analyzed the characteristics of whole life operation of district energy system and proposed a deep integrated method to optimize various energy inputs and demands, achieving significant improvements in economic, energy, and environmental benefits compared to other integrated methods.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Construction & Building Technology
Haoran Li, Zhicheng Wei, Qingcheng Miao, Longfei Zhao, Bo Sun, Chenghui Zhang
Summary: This paper proposes a cooperative dispatch method to optimize daily operations in integrated energy systems, taking into account the coupling characteristics of multi-energy flows. The results show that the method reduces energy supply costs, decreases carbon emissions, and improves energy efficiency.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Proceedings Paper
Energy & Fuels
Haoran Li, Chenghui Zhang, Bo Sun, Yiming Li
THIRD INTERNATIONAL CONFERENCE ON ENERGY ENGINEERING AND ENVIRONMENTAL PROTECTION
(2019)
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)