Article
Energy & Fuels
Yingdong He, Yuekuan Zhou, Zhe Wang, Jia Liu, Zhengxuan Liu, Guoqiang Zhang
Summary: The study presents a dynamic analysis on fuel cell degradation in a hydrogen-based building-vehicle energy network, revealing a total fuel cell degradation of 3.16% per vehicle within one year, with 2.5% from daily transportation and 0.66% from V2G interactions. In the H-2-based residential community, the total fuel cell degradation cost is US$6945.2, accounting for 33.4% of the total operating cost at $20770.61.
Article
Thermodynamics
Siqian Zheng, Xin Jin, Gongsheng Huang, Alvin C. K. Lai
Summary: Driven by advances in smart grid technologies, this paper develops a hierarchical energy management system for a commercial neighbourhood, enabling distributed prosumers to share energy and manage loads and storages. The study comprehensively analyzes the techno-economic-environmental impacts and shows the effectiveness and economic benefits of the P2P system.
Article
Green & Sustainable Science & Technology
Siqian Zheng, Gongsheng Huang, Alvin C. K. Lai
Summary: The study demonstrates that in smart grids, a peer-to-peer energy sharing model can increase self-consumption rates, reduce net costs, and save energy bills for each prosumer.
Article
Automation & Control Systems
Shichang Cui, Yan-Wu Wang, Xiao-Kang Liu, Zhuo Wang, Jiang-Wen Xiao
Summary: This article proposes an economic storage sharing framework to promote renewable energy utilization through cooperative bargaining and sharing among prosumers and ESPs, ensuring fairness and efficiency in the benefits sharing model based on the contributions of participants.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2021)
Review
Energy & Fuels
Md. Arafat Hossain, Md. Rashidul Islam, Md. Alamgir Hossain, M. J. Hossain
Summary: Hydrogen is gaining popularity as a preferred choice for energy storage systems (ESSs) due to its high energy density, large storage capacity, and fast operational capabilities. Control systems, such as power electronic converters and DC link regulation systems, are crucial for the integration of hydrogen energy storage technologies into modern power grids. This review article provides a comprehensive examination of the current challenges, advancements, and deployments of control systems associated with hydrogen energy storage, aiming to assist researchers, engineers, and policymakers in understanding the current state and future possibilities of this technology.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Tansu Galimova, Mahdi Fasihi, Dmitrii Bogdanov, Christian Breyer
Summary: Widely available and low-cost solar photovoltaics and wind power can enable production of renewable electricity-based hydrogen, which can be used as a feedstock for further processing. However, this study found that despite lower production costs in Morocco and Chile, transporting e-hydrogen to Germany and Finland makes imports economically unattractive. Therefore, local production of e-hydrogen may be more feasible and can enhance energy security and job opportunities.
Review
Chemistry, Physical
Torbjorn Egeland-Eriksen, Amin Hajizadeh, Sabrina Sartori
Summary: Hydrogen energy storage systems are technically feasible but require cost reductions for commercial attractiveness; low energy efficiency of some components affects costs; with the expected increase of intermittent renewable energy in power systems, hydrogen technology may see further development; hybrid systems offer the best solution but need to be tailored to specific situations for optimal efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Brian Hammerstrom, Christopher Niezrecki, Kelly Hellman, Xinfang Jin, Michael B. B. Ross, J. Hunter Mack, Ertan Agar, Juan Pablo Trelles, Fuqiang Liu, Fanglin Che, David Ryan, Madhava S. S. Narasimhadevara, Mary Usovicz
Summary: In recent years, there has been increased interest in hydrogen energy as a means to reduce greenhouse gas emissions. While some countries have made progress, the United States still faces reservations and uncertainty regarding hydrogen utilization. Massachusetts, like other states, confronts challenges in terms of technical, infrastructure, policy, safety, and public acceptance. This study examines the integration of hydrogen into Massachusetts and similar regions, explores its potential applications, and provides recommendations for its consideration in policy-making.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Eunsung Oh
Summary: This paper presents a risk-based virtual ESS (VESS) service strategy, which reduces the cost barrier of using an energy storage system by installing a larger capacity ESS through logically referring to a physical ESS by multiple users. The VESS service considers both economic benefits and risk values, and optimally solves the problem using the gradient descent method in an iterative manner.
APPLIED SCIENCES-BASEL
(2021)
Editorial Material
Chemistry, Physical
Alberto Boretti
Summary: Hydrogen as an energy store is not competitive but complementary to the electric economy, and both should be promoted together to achieve a faster transition towards a CO2 emission-free economy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Stergios Emmanouil, Efthymios Nikolopoulos, Baptiste Francois, Casey Brown, Emmanouil N. Anagnostou
Summary: This study evaluates the potential of utilizing existing water supply infrastructure as small-scale pumped hydroelectric storage (PHS) units to reduce steep power ramps caused by renewable energy penetration. The analysis shows that the seasonal pattern of storage capacity is in accordance with the behavior of the corresponding hydraulic head timeseries, with higher values in winter/autumn.
Article
Engineering, Electrical & Electronic
Yuechuan Tao, Jing Qiu, Shuying Lai, Junhua Zhao
Summary: This article proposes an energy sharing model in the forms of hydrogen and electricity and applies distributed optimization method to solve the problem, which can protect the privacy of each aggregator and reduce computational complexity. Simulation results show that the sharing amount of different kinds of energy and the unified market clearing prices can be obtained, achieving the maximum total social welfare and the lowest total system cost.
IEEE TRANSACTIONS ON SMART GRID
(2021)
Article
Energy & Fuels
Zhaoyang Qu, Chuanfu Xu, Fang Yang, Fan Ling, Sasan Pirouzi
Summary: With advancements in energy generation and storage technologies, environmentally-friendly integrated units of renewable energy hubs equipped with various resources and storage systems have significant applications in the power system. This paper explores their participation in the energy market using a market clearing price model, improving the technical and economic status of energy networks. The proposed design optimizes the hub's expected profit and considers operational constraints and flexibility, achieving improved operation and economic status compared to traditional studies.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Sanghyun Hong, Eunsung Kim, Saerok Jeong
Summary: South Korea announced a roadmap and regulations for the hydrogen economy, but its sustainability has not been thoroughly studied. We compared the impacts of hydrogen with other energy carriers, and found that green hydrogen improves environmental sustainability and energy security. We propose policy implications such as expanding renewables, aligning clean hydrogen standards with decarbonization plans, and investing in research and development to reduce hydrogen production costs.
Article
Green & Sustainable Science & Technology
Shanshan Zhang, Shaobing Yang, Qiujiang Liu, Bin Hu, Junting Zhang, Josep Guerrero
Summary: This paper explores the technical and economic feasibility of integrating ESS and RES in the flexible traction power supply system (FTPSS). A battery degradation model suitable for frequent charging and discharging conditions is derived. An operational-sizing co-optimization framework is developed for the ESS in the FTPSS, considering degradation costs varying with sizes and energy throughput. Comparative cases show that the proposed approach achieves approximately 10% higher economic benefits than existing bi-level sizing strategies for FTPSS.
IET RENEWABLE POWER GENERATION
(2023)
Article
Construction & Building Technology
Wei Liao, Jinqing Peng, Yimo Luo, Yingdong He, Nianping Li, A. Yongga
Summary: Comparative experimental studies were conducted on convective air-conditioning and radiant ceiling terminals to examine their differences in energy consumption and thermal comfort. The results showed that the radiant ceiling terminal outperformed the convective air-conditioning terminal in terms of energy savings and indoor thermal comfort.
BUILDING AND ENVIRONMENT
(2022)
Article
Construction & Building Technology
Jinhua Hu, Yingdong He, Xiaoli Hao, Nianping Li, Yuan Su, Huaidi Qu
Summary: This study investigated the optimal temperature ranges for male and female students in university classrooms to achieve comfortable feelings, high work performance, and low prevalence of sick building syndrome (SBS). Results showed that males were more comfortable, had higher work performance, and lower SBS prevalence in cool environments compared to females. Balanced optimal temperature ranges were found to be 17.3-22.0 degrees C for males and 18.5-20.8 degrees C for females, with higher temperatures needed to ensure high willingness to work.
ENERGY AND BUILDINGS
(2022)
Article
Green & Sustainable Science & Technology
Mingjing Xie, Yuran Wang, Zhengxuan Liu, Guoqiang Zhang
Summary: This study investigated and evaluated the exploration and assessment of natural ventilation in different location patterns of rural residential buildings in the mountainous terrain of China. Through on-site surveys and wind tunnel experiments, it was found that a distance of 12 meters between the buildings and hilly terrain is the best option for building natural ventilation. Using CFD methods, the natural ventilation effectiveness under different location patterns was simulated, and the most favorable location pattern for natural ventilation was obtained.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Yingdong He, Yuekuan Zhou, Jia Liu, Zhengxuan Liu, Guoqiang Zhang
Summary: This study proposes a framework for inter-city energy migration based on transportation, which enables sharing and balancing of energy resources, reducing regional energy imbalance and carbon emissions.
Article
Energy & Fuels
Jia Liu, Yuekuan Zhou, Hongxing Yang, Huijun Wu
Summary: This study develops uncertainty energy planning for net-zero energy communities by considering innovative peer-to-peer energy trading management, advanced green vehicle storage, climate changes, and machine learning predictions. The results show variations in key weather parameters, with a slight decrease in solar photovoltaic and wind power generation by 2050.
Review
Energy & Fuels
Ge Song, Zhengtao Ai, Zhengxuan Liu, Guoqiang Zhang
Summary: This study comprehensively summarizes and analyzes the recent studies and common utilization forms of smart ventilation and personalized ventilation systems based on CO2 concentration control, providing guidance for reducing energy consumption and improving indoor thermal comfort.
Article
Construction & Building Technology
Kairui You, Yanhui Yu, Weiguang Cai, Zhengxuan Liu
Summary: This study analyzed the changes in CO2 emissions and their driving factors in China's commercial and public building sector from a temporal and spatial perspective, providing insights for developing equitable and effective decarbonization strategies. The results showed that the sector has not yet reached its CO2 emissions peak in the temporal dimension, while the gravity center has moved southwestward in the spatial dimension. The study also reviewed decarbonization strategies and provided policy implications.
BUILDING AND ENVIRONMENT
(2023)
Article
Construction & Building Technology
Yuekuan Zhou, Zhengxuan Liu
Summary: Transition towards a carbon-neutral district energy community requires carbon elimination and offsetting strategies, which can be achieved by using phase change materials (PCMs) with substantial potential latent energy density. However, there is currently an ambiguous roadmap for the application of PCMs in carbon-neutral transition, making a comprehensive review on latent thermal storage necessary.
SUSTAINABLE CITIES AND SOCIETY
(2023)
Article
Construction & Building Technology
Yan Hu, Zhengxuan Liu, Zhengtao Ai, Guoqiang Zhang
Summary: Ventilative cooling is an energy-saving technology that improves indoor air quality while reducing thermal discomfort and overheating risk in buildings. However, the lack of an optimal control strategy hinders its widespread application. This study developed a building model to evaluate the performance of ventilative cooling systems in different cities of China. The findings suggest that an adaptive thermal comfort model may not be optimal in terms of energy efficiency, and considering radiant temperature is important for accurate energy usage estimation. The study also highlights the importance of eliminating drawbacks in the control limits to effectively harness the energy-saving potential of ventilative cooling.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Zhengxuan Liu, Chenxi Yu, Queena K. Qian, Ruopeng Huang, Kairui You, Henk Visscher, Guoqiang Zhang
Summary: This study aims to deeply analyze the incentive initiatives related to existing building energy-efficient renovation in China, establish the policy linkages between national and local level perspectives, and provide critical analysis and good practices for two batches of pilot cities. The study also discusses the barriers to building energy-efficient renovation from four perspectives and proposes targeted pathways and strategies.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Zhengxuan Liu, Xiang Zhang, Ying Sun, Yuekuan Zhou
Summary: This study provides a comprehensive review of advanced controls for smart and energy-efficient (SEE) buildings, including advanced building energy systems, machine learning based controls, and occupant-centric controls. The study also explores the applications of advanced controls in energy-efficient and low-carbon buildings, and highlights the challenges and future prospects in terms of complexity, AI-based controllers, and climate change adaptation.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Jie Hu, Zhengxuan Liu, Guochuan Ma, Guoqiang Zhang, Zhengtao Ai
Summary: Previous studies have shown that the air infiltration in buildings and its impact on indoor environment and energy consumption are influenced by climate characteristics. However, there is limited information available for buildings in southern China, where the building design traditionally emphasizes openness and shading. This study investigates the airtightness and energy consumption in a Hot Summer and Cold Winter climate region of southern China using measurements and simulations.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Ruopeng Huang, Guiwen Liu, Kaijian Li, Zhengxuan Liu, Xinyue Fu, Jun Wen
Summary: This study proposes an agent-based model to investigate the development of residents' cooperative behavior in neighborhood renewal. The results show that government intervention and management of residents' social relationships play a crucial role in achieving better outcomes. The study also highlights the influence of social network structures on residents' cooperative behavior.
COMPUTERS ENVIRONMENT AND URBAN SYSTEMS
(2023)
Review
Computer Science, Artificial Intelligence
Zhengxuan Liu, Ying Sun, Chaojie Xing, Jia Liu, Yingdong He, Yuekuan Zhou, Guoqiang Zhang
Summary: This study summarizes commonly used AI-related approaches and discusses their functional advantages in various renewable energy sectors, as well as their contribution to optimizing the operational control modalities of renewable energy and improving overall operational effectiveness.
Article
Construction & Building Technology
Yapin Yang, Ying Sun, Mingsi Chen, Yuekuan Zhou, Ran Wang, Zhengxuan Liu
Summary: This paper develops a BIM-based fire safety management system platform for construction sites, which includes four subsystems: remote monitoring, fire visualization, multi-stage fire alarm, and escape route optimization. Results show that this system can provide informative and on-time fire protection measures to construction sites.
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)