Article
Green & Sustainable Science & Technology
Chen Feng, Yuan Zheng, Chaoshun Li, Zijun Mai, Wei Wu, Huixiang Chen
Summary: The research explores the combined operation of renewable energy and pumped storage unit in rural electrification, as well as the economic benefits of using adjustable-speed pumped storage unit as energy storage device. The study uses a scheduling model to analyze the technical features of ASU and FSU, showing that using ASU can significantly reduce the operational cost of the hybrid system.
Article
Engineering, Multidisciplinary
Heng-Yi Su, Jian-Hong Liu, Chia-Chi Chu, Sheng-Huei Lee, Ying-Yi Hong, Yu-Jen Lin, Ching-Jung Liao
Summary: The Taiwanese government aims to have 20% of its total power generated from renewable energy resources by 2025, reshaping the typical net load curve and changing the operation modes of pumped hydro storage units. To address this challenge, an optimal scheduling of Taiwan power system has been developed to examine the coordination of renewable energy resources and pumped hydro storage plants. Simulation results show that existing pumped hydro storage units in Taiwan can effectively mitigate the impact of the duck-shaped net load curve in the generator scheduling of future Taiwan power system.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2021)
Article
Green & Sustainable Science & Technology
Asmaa I. Abdelfattah, Mostafa F. Shaaban, Ahmed H. Osman, Abdelfatah Ali
Summary: Power demand fluctuates daily and seasonally. Managing this variation is challenging for energy suppliers as it increases the cost of electricity due to the operation of expensive power plants during high-demand seasons. Peak load shaving aims to reduce peak load and shift it to times of lower demand, necessitating large-scale and long-term energy storage systems. In this study, an energy management system (EMS) is developed to optimize the operation of a grid-connected pumped hydro storage (PHS) for peak shaving. The simulation results show that integrating PHS significantly reduces the operation of expensive thermal units and decreases operating costs.
Article
Green & Sustainable Science & Technology
Linjun Shi, Fan Yang, Yang Li, Tao Zheng, Feng Wu, Kwang Y. Lee
Summary: This paper studies the optimal configuration of electrochemical energy storage (EES) considering the optimal operation strategy of pumped storage hydro (PSH) in reducing the curtailment of wind and photovoltaic power in the power grid. A combined operation optimization model of PSH and EES is proposed based on the curtailment of renewable energy resources (RES). The simulation results demonstrate that the desired power curtailment rate can be achieved by rationally configuring the capacity of EES.
Article
Engineering, Electrical & Electronic
Zean Zhu, Xu Wang, Chuanwen Jiang, Lingling Wang, Kai Gong
Summary: The paper focuses on the optimal operation of a hybrid renewable energy system, proposing a multi-objective optimization model to address the reliability and economy issues. The improved NBI method and linearization transformation techniques were employed for optimization, with case study results demonstrating the feasibility of the model and the effectiveness of the improved method, highlighting the importance of ELCC in HRES operation.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Energy & Fuels
D. Dubbers
Summary: According to the laws of fluid mechanics, modular offshore pumped hydro-energy storage systems like StEnSEA do not have advantages over similar but much cheaper onshore systems.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Natalia Naval, Jose M. Yusta, Raul Sanchez, Fernando Sebasti
Summary: Pumped hydro-energy storage will become an essential component of power systems by adding value to renewable integration and reducing dependence on fossil fuels. This research presents an optimized model for combining photovoltaic and wind power plants with reversible pump-turbine units to maximize profits and meet electricity demand. The results demonstrate that the integration of renewable energy and pumped hydro-energy storage reduces energy dependence and ensures the security and stability of power systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Rabea Jamil Mahfoud, Nizar Faisal Alkayem, Yuquan Zhang, Yuan Zheng, Yonghui Sun, Hassan Haes Alhelou
Summary: In the past decade, there has been increasing interest in energy storage in renewable energy-dominated systems. Pumped hydro storage (PHS) is the most common storage technology due to its maturity and reliability. This paper comprehensively reviews recent efforts towards the optimal operation of PHS-based energy systems, addressing criteria, methods, and improvements. The paper also highlights the need for flexible energy policies, further research on environmental and social criteria, exploration of hybridization with other storage devices, and the development of robust methods for real-time applications.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
Saeid Ahmadi, Marcos Tostado-Veliz, Ali Asghar Ghadimi, Mohammad Reza Miveh, Francisco Jurado
Summary: Microgrids serve as an important framework for integrating renewable energy sources and demand response programs. The deployment of energy storage facilities and the use of hybrid storage systems can lead to more efficient management. Coping with uncertainties and properly modeling them is crucial for the operation of microgrids.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Eray Ercan, Elcin Kentel
Summary: The negative effects of fossil fuels on the environment and health are driving the shift towards renewable energy. Pumped storage hydropower, combined with renewable energy systems, is found to be the most efficient form of large-scale energy storage. In this study, a long short-term memory network is used to forecast electricity prices, and an optimization model is applied to maximize daily revenue for a wind-hydro hybrid system.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Giovanna Cavazzini, Alberto Benato, Giorgio Pavesi, Guido Ardizzon
Summary: Wind and solar energy are renewable sources with great potential but require energy storage solutions to address supply-demand mismatches. The hybridization of seawater PHES with a wind farm can improve revenue and resolve imbalances in power generation.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Ahmed S. Menesy, Hamdy M. Sultan, Ibrahim O. Habiballah, Hasan Masrur, Kaisar R. Khan, Muhammad Khalid
Summary: In this study, the optimal design of a standalone hybrid renewable energy system is investigated using PV, wind turbine, biomass sources, and a hydro-pumped storage system. The HBO algorithm is found to be the most effective in achieving the desired design that minimizes the cost of energy and loss of power supply probability.
Article
Energy & Fuels
Simone Mucci, Alexander Mitsos, Dominik Bongartz
Summary: The synthesis of methanol from captured carbon dioxide and green hydrogen could be a promising replacement for the current fossil-based production. The study found that storage, especially hydrogen storage, is particularly beneficial when the electricity price is high and highly fluctuating, and in the future, batteries could play a bigger role.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
R. N. Vitorino, D. S. Ramos, K. Tapia-Ahumada, S. Paltsev, J. Reilly
Summary: This article evaluates the optimal economic hourly dispatch in hydro-thermal systems with a large integration of variable renewable energy. A linear optimization model, Elemod, is used to analyze the power system operation on an hourly basis for a planning horizon of one year. The study proposes an alternative formulation for pumped-hydro storage to minimize the total annual system cost. The Brazilian Hydro-thermal System is simulated to demonstrate the methodology and modeling application, showing the ability of pumped-hydro storage to provide hourly capacity and optimize transmission system usage.
ELECTRIC POWER SYSTEMS RESEARCH
(2023)
Article
Energy & Fuels
Soumyadeep Nag, Kwang Y. Lee
Summary: This paper introduces a hybrid plant consisting of solar photovoltaic (PV) and Ternary pumped-storage hydro (TPSH) that utilizes neural-network-based controls to coordinate the response of multiple arrays with the TPSH. The designed controls enable the PV system to track references, while the TPSH's firming and shifting transforms the PV system into a base load plant for most of the day. Through symbiotic relationship, the PV compensates for TPSH nonlinearities and provides required speed of response.
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)