Article
Energy & Fuels
Sara Sultan, Jason Hirschey, Navin Kumar, Borui Cui, Xiaobing Liu, Tim J. LaClair, Kyle R. Gluesenkamp
Summary: Researchers conducted a preliminary analysis on the techno-economic performance of a heat pump-integrated thermal energy storage system using phase change materials. They found that factors such as phase change temperature, storage capacity, and building configuration had significant impacts on the system's energy savings, cost reduction, and peak load reduction benefits under different climate conditions.
Article
Energy & Fuels
Mohamed Hany Abokersh, Manel Valles, Kangkana Saikia, Luisa F. Cabeza, Dieter Boer
Summary: The study evaluated the techno-economic benefits of different control strategies for a heat pump integrated into a solar assisted district heating system. The system was optimized using a genetic algorithm and applied to a residential neighborhood in Madrid. Results showed significant impact of heat pump control on techno-economic benefits and improved seasonal storage efficiency up to 90%.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Green & Sustainable Science & Technology
Bishwajit Dey, Soham Dutta, Fausto Pedro Garcia Marquez
Summary: In a typical microgrid (MG) structure, the load requirements vary throughout the day. Power system utilities set rates for electric power based on the fluctuation of the load demand curve, a process known as time-of-usage (TOU)-based pricing. The hourly load demand can be categorized as elastic or inelastic. Elastic loads are shifted to low demand hours during peak hours to save costs through demand side management (DSM) based on demand price elasticity. The paper proposes an intelligence-technique-based DSM strategy to reduce overall cost in MG structures, considering that elastic loads make up 10% to 40% of total load. Seven different cases are studied, demonstrating the effectiveness of the proposed DSM strategy in terms of cost savings for all MGs.
Article
Green & Sustainable Science & Technology
Mohammad Mahmoudi, Maziar Dehghan, Hamidreza Haghgou, Mansoor Keyanpour-Rad
Summary: The study found that under PV-powered conditions, variable-speed compression heat pumps are more efficient than fixed-speed compression systems, requiring a smaller PV system size and providing more cooling and heating capacity. Economic evaluation shows that using variable-speed compression heat pumps powered by PV systems is more energy-efficient compared to fixed-speed compression systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Timur Sayfutdinov, Charalampos Patsios, David Greenwood, Meltem Peker, Ilias Sarantakos
Summary: This paper proposes a two-step framework for techno-economic analysis of demand-side flexibility services in distribution networks, which considers the objectives of flexibility providers, technical constraints, market mechanisms, and strategic bidding by service providers.
Article
Thermodynamics
Alberto Vannoni, Alessandro Sorce, Alberto Traverso, Aristide Fausto Massardo
Summary: Heat pumps are crucial for decarbonizing the heat supply, but the phase-out of harmful fluids and high costs hinder their widespread adoption, especially for high temperature applications. This paper provides a comprehensive assessment of heat pump design and features in different market scenarios, considering the potential of iso-butane. It discusses the optimal sizing and contribution of each component from a techno-economic perspective, highlights the importance of the evaporator, and presents a case study on replacing gas-fired boilers. The paper also emphasizes the need to consider the dependency of retail prices on energy consumption and introduces a market indicator to compare the competitiveness of heat pumps and boilers.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Yichi Zhang, Par Johansson, Angela Sasic Kalagasidis
Summary: This study compares and simulates three thermal energy storage options - water tank, phase change material tank, and building thermal mass - and finds that building thermal mass is the most cost-effective option while water tank is the least attractive choice. The majority of life-cycle cost savings come from peak load reduction, with less discharged energy and cost savings in well-insulated buildings.
Article
Energy & Fuels
Frank Fiedler, Joaquin Coll Matas
Summary: This study evaluates the techno-economic feasibility of grid-connected PV battery systems for single homes at a Swedish holiday location. The study finds that grid-connected residential PV battery systems can be equally or slightly more profitable compared to grid-connected PV systems without batteries when demand charges are applied.
Article
Construction & Building Technology
Yang Wang, Wei He
Summary: The study proposes new approaches to accelerate the decarbonisation of domestic heating using heat pumps in the UK, including synthesising high-quality temporospatial energy datasets, a new framework for national-scale cost analysis, forward-looking analysis of potential subsidy structures and R&D directions. Currently RHI-subsidised ground source heat pumps have the lowest levelised cost of heat, but advances are needed to improve performance in various aspects.
ENERGY AND BUILDINGS
(2021)
Article
Construction & Building Technology
Ruichao Zhang, Dengjia Wang, Zuoxiang Yu, Yongjun Sun, Hang Wan, Yanfeng Liu, Qingtai Jiao, Meng Gao, Jianhua Fan, Bo Lan
Summary: This study proposes a novel design method using NSGA-II optimization model to improve the thermal matching and techno-economic performance of concentrated solar district heating system (CSDHS) combined with water-to-water heat pump (WWHP). The results show that the performance of the optimized system is significantly improved compared to the existing system, with increased solar fraction, heat collection efficiency and reduced levelized cost of heat. The study also finds that WWHP can constantly improve the thermal performance of the system, but it only improves the system economic performance in specific conditions.
ENERGY AND BUILDINGS
(2023)
Article
Energy & Fuels
Patrick Mathiesen, Michael Stadler, Jan Kleissl, Zachary Pecenak
Summary: The intra-hour intermittency of solar energy and demand presents challenges for microgrid design, with the need to address energy shortfalls and runtime issues. This research introduces a new method to optimize DER investments and dispatch planning using hourly data, incorporating variability to improve optimization times.
Article
Green & Sustainable Science & Technology
Tariro Tecla Manhongo, Annie Chimphango, Patricia Thornley, Mirjam Roder
Summary: This study analyzed the process feasibility, economic and environmental performances of mango processing waste biorefineries using three different scenarios. The results showed that co-producing pectin and polyphenols with bioethanol and bioenergy can improve profitability. However, a trade-off between profitability and environmental impacts should be considered in implementation decisions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Kamran Zamanpour, Mohammad Amin Vaziri Rad, Negar Saberi, Leila Fereidooni, Alibakhsh Kasaeian
Summary: The industrial sector is the largest consumer and emitter of energy in the world. In Iran, the importance of utilizing new energy resources is even greater due to industrial growth, capacity shortage in conventional power plants, and unreliable power supply during peak times. However, finding the optimal dispatch strategy for managing both renewable and nonrenewable sources is challenging.
Article
Energy & Fuels
Anuradha Tomar, D. S. Shafiullah, P. H. Nguyen, Marcel Eijgelaar
Summary: With a capacity-based network tariff structure, consumers are encouraged to reduce their connection capacity to avoid higher costs, but overloading beyond the administrative grid connection capacity limit must be avoided. Optimizing the energy generation and consumption profiles of local energy communities (LECs) is crucial for reducing grid connection overloading and increasing the utilization of local renewable energy resources (RES). The proposed data-driven flexibility optimizer model shows potential for achieving higher flexibility and reducing peak demand while maintaining occupant comfort levels.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2021)
Article
Construction & Building Technology
Imran Khan, Michael W. Jack, Janet Stephenson
Summary: By analyzing residential electricity consumption data in Bangladesh, this study identifies the key factors influencing demand patterns as the number of major electrical appliances and the number of occupants in households. The research results suggest that daily average electricity consumption is influenced by the number of electrical appliances, while demand during system peaks is driven by the number of occupants.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Green & Sustainable Science & Technology
Tobias Jacobs, Sebastien Nicolas, Tae-Gil Noh, Anett Schuelke, Hans Auer, Daniel Schwabeneder, Edmund Widl, Daniele Basciotti, Sawsan Henein, Olatz Terreros
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2019)
Article
Thermodynamics
Benedikt Leitner, Edmund Widl, Wolfgang Gawlik, Rene Hofmann
Article
Chemistry, Multidisciplinary
Michael H. Spiegel, Edmund Widl, Bernhard Heinzl, Wolfgang Kastner, Nabil Akroud
APPLIED SCIENCES-BASEL
(2020)
Article
Energy & Fuels
Edmund Widl, Benedikt Leitner, Daniele Basciotti, Sawsan Henein, Tarik Ferhatbegovic, Rene Hofmann
Article
Green & Sustainable Science & Technology
Edmund Widl, Giorgio Agugiaro, Jan Peters-Anders
Summary: This paper addresses the challenge of representing semantic 3D city models in a way that ensures efficient use by simulation tools, by developing a software prototype on top of the CityGML standard. The aim is to foster stronger collaboration between experts in urban data modeling and energy simulations, based on a proof-of-concept implementation that may inspire future developments.
Article
Energy & Fuels
Edmund Widl, Dennis Cronbach, Peter Sorknaes, Jaume Fito, Daniel Muschick, Maurizio Repetto, Julien Ramousse, Anton Ianakiev
Summary: This article introduces innovative tools for modeling and simulating hybrid energy networks (HENs) and categorizes them to provide a guideline for early adopters in selecting the most suitable tools for their specific application needs.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Engineering, Electrical & Electronic
Antonio De Paola, Dimitrios Thomas, Alexandros Paspatis, Edmund Widl, Antonios Marinopoulos, Evangelos Kotsakis, Alkistis Kontou, Panos Kotsampopoulos, Nikolaos Hatziargyriou
Summary: This article presents a new method for the open-source design and documentation of benchmark network models. The method includes different phases of model development, a conceptual framework for model documentation based on holistic test description and PreCISE paradigms, and practical examples on how to translate the conceptual framework into a complete model description. The method is validated through a complete model documentation for a developed low-voltage network.
IEEE OPEN JOURNAL OF THE INDUSTRIAL ELECTRONICS SOCIETY
(2023)
Proceedings Paper
Construction & Building Technology
Edmund Widl, Christopher Wild, Kai Heussen, Evangelos Rikos, Tran-The Hoang
Summary: This study focuses on two approaches for assessing the effects of power-to-heat technologies on electrical distribution grids and district heating networks, and compares their advantages and challenges.
2022 OPEN SOURCE MODELLING AND SIMULATION OF ENERGY SYSTEM (OSMSES)
(2022)
Article
Thermodynamics
Benedikt Leitner, Edmund Widl, Wolfgang Gawlik, Rene Hofmann
Proceedings Paper
Computer Science, Interdisciplinary Applications
Edmund Widl, Timoleon-Panagiotis Mantafounis, Andreas Davros, Oliver Gehrke, Tue Vissing Jensen, George Kiokes, Nikos Hatziargyriou
2019 7TH WORKSHOP ON MODELING AND SIMULATION OF CYBER-PHYSICAL ENERGY SYSTEMS (MSCPES)
(2019)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Benedikt Pesendorfer, Edmund Widl, Wolfgang Gawlik, Rene Hofmann
2018 WORKSHOP ON MODELING AND SIMULATION OF CYBER-PHYSICAL ENERGY SYSTEMS (MSCPES)
(2018)
Proceedings Paper
Geography, Physical
E. Widl, G. Agugiaro, P. Puerto
ISPRS TC IV MID-TERM SYMPOSIUM 3D SPATIAL INFORMATION SCIENCE - THE ENGINE OF CHANGE
(2018)
Proceedings Paper
Computer Science, Theory & Methods
Benedikt Pesendorfer, Edmund Widl, Wolfgang Gawlik, Rene Hofmann
2018 INTERNATIONAL CONFERENCE ON SMART ENERGY SYSTEMS AND TECHNOLOGIES (SEST)
(2018)
Article
Engineering, Electrical & Electronic
T. I. Strasser, F. Proestl Andren, E. Widl, G. Lauss, E. C. W. De Jong, M. Calin, M. Sosnina, A. Khavari, J. E. Rodriguez, P. Kotsampopoulos, M. Blank, C. Steinbrink, K. Maki, A. Kulmala, A. van der Meer, R. Bhandia, R. Brandl, G. Arnold, C. Sandroni, D. Pala, D. E. Morales Bondy, K. Heussen, O. Gehrke, F. Coffele, Q. -T. Tran, E. Rikos, V. H. Nguyen, I. Orue, M. Z. Degefa, S. Manikas
ELEKTROTECHNIK UND INFORMATIONSTECHNIK
(2018)
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.
