Review
Green & Sustainable Science & Technology
Hessam Golmohamadi, Kim Guldstrand Larsen, Peter Gjol Jensen, Imran Riaz Hasrat
Summary: This paper surveys the applications of District Heating Systems (DHS) in power system flexibility. It examines the basic structure of DHS, reviews control strategies, and investigates the role of heat controllers in power system flexibility. It also studies the compatibility of controllers with flexible energy markets and explores optimization solutions with software tools.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Chuanmin Tai, Guansan Tian, Wenjun Lei
Summary: A novel district heating system based on absorption heat exchange and water-heat combined supply is proposed to address the challenges faced by traditional steam extraction cogeneration in nuclear power plants. This system offers improvements in heating and transportation capacity while reducing investment and power consumption.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Lin Fu, Yonghong Li, Yanting Wu, Xiaoyin Wang, Yi Jiang
Summary: The study introduces a low carbon district heating system that is suitable for large cities in Northern China, aiming to reduce energy consumption, emissions, and improve the economics of the heating systems.
Article
Energy & Fuels
Anna Volkova, Ieva Pakere, Lina Murauskaite, Pei Huang, Kertu Lepiksaar, Xinxing Zhang
Summary: The 5th Generation District Heating and Cooling (5GDHC) network offers numerous advantages including integration of low-temperature resources, bi-directional operation, decentralised energy flows, and potential energy sharing. This study evaluates the prospects of implementing 5GDHC systems in the Baltic states and identifies Lithuania as having the most favorable conditions for implementation, while Estonia shows the greatest potential for heat pumps and excess heat utilization in 5GDHC systems.
Article
Chemistry, Physical
Hans Boehm, Simon Moser, Stefan Puschnigg, Andreas Zauner
Summary: Power-to-hydrogen is expected to play a crucial role in future sustainable energy systems, potentially leading to synergies with district heating networks. Studies analyze technology-specific efficiencies, heat flows, and temperatures, while summarizing opportunities and challenges arising from system perspective.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
R. Skvorcinskiene, N. Striugas, A. Galinis, V Lekavicius, E. Kurkela, M. Kurkela, R. Lukosevicius, M. Radinas, A. Sermuksniene
Summary: This article proposes a new concept of tri-generation of Fischer-Tropsch products, heat, and power for future energy markets. The feasibility and economic attractiveness of the concept are examined through a techno-economic assessment, providing a new solution to reduce fossil fuel usage and improve the efficiency of district heating systems.
Article
Green & Sustainable Science & Technology
Markus Fritz, Margaux Savin, Ali Aydemir
Summary: The use of industrial excess heat is important for the expansion and decarbonization of district heating networks. However, the factors and barriers for implementing excess heat recovery projects are uncertain. Through expert interviews and literature review, it is found that projects often rely on individuals, communication between stakeholders is insufficient, relevant stakeholders are unaware of excess heat recovery opportunities, and financial aspects play an important role in decision-making.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Energy & Fuels
Anna Kallert, Robert Egelkamp, Ulrich Bader, Dietmar Muennich, Lisa Staudacher, Hannes Doderer
Summary: The project aims to decarbonize the heating sector through district heating, utilizing renewable energies and waste heat sources, as well as integrating solar thermal systems and biomass boilers for heating security. By optimizing the heating system design and conducting cost-benefit analysis, low heat generation costs and maximized utilization of renewable heat sources are achieved.
Article
Energy & Fuels
Ruud Egging-Bratseth, Hanne Kauko, Brage Rugstad Knudsen, Sara Angell Bakke, Amina Ettayebi, Ina Renate Haufe
Summary: Low-temperature district heating is a key technology for efficient urban heat supply, enabling the integration of waste heat and renewable heat sources. By optimizing operational flexibility through demand side management and seasonal storage, significant reductions in carbon emissions and operational costs can be achieved.
Article
Energy & Fuels
Antonio S. Faria, Tiago Soares, Jose Maria Cunha, Zenaida Mourao
Summary: Current developments in heat pumps and innovative business models are driving various industries to play an active role in future district heating and cooling networks in cities. The reuse of waste heat as an additional heat source for the district heating network, especially by supermarkets and data centers, is being evaluated to offset the investment in heat pumps. Inspired by practices in the electricity sector, this study proposes innovative market designs for district heating networks, comparing centralized and decentralized approaches. Using a Nordic district heating network as a case study, the performance of each market design and the potential revenue for different heat producers are assessed. A key conclusion is that the proposed market designs align with new trends, promoting the inclusion of new players in excess heat recovery in district heating networks.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Thermodynamics
Zichan Xie, Haichao Wang, Pengmin Hua, Risto Lahdelma
Summary: This study introduces a novel and efficient method for dynamic thermal modelling of district heating pipes. The method uses discrete event simulation to track water frontiers and reduces computational complexity. The proposed model accurately computes outlet water temperature, temperature profile along the pipe, and heat loss. The model was validated against real measurements and showed accurate predictions.
Article
Energy & Fuels
Marwan Abugabbara, Jonas Lindhe, Saqib Javed, Hans Bagge, Dennis Johansson
Summary: District heating and cooling are effective solutions for decarbonising the building sector, with the potential for integrating heat pumps and chillers to increase benefits such as reducing network losses and recovering waste heat.
Article
Thermodynamics
Ilhan Keskin, Gurkan Soykan
Summary: Data centers are significant energy consumers and can be utilized as a source of waste heat energy. A combined cooling, heat, and power system can meet the power and cooling demands of data centers and provide flexibility through integration with regional heating and cooling systems. This paper presents a comprehensive energy cost management framework that considers electricity, heating, cooling, and the utilization of data center's waste heat.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Thermodynamics
Dominik Hering, Michael R. Faller, Andre Xhonneux, Dirk Mueller
Summary: This paper investigates operational optimization of a 4th-generation district heating network with regards to temperatures and use of thermal inertia. A case study demonstrates that quadratic formulations can optimize energy balances and temperatures, resulting in cost savings of up to 18.2%.
Article
Energy & Fuels
Victoria Volodina, Edward Wheatcroft, Henry Wynn
Summary: This study proposes a decision support tool for district heating system design, using stochastic ordering to analyze and compare different designs, allowing decision-makers to make robust decisions. The results show that heat pump is a more robust low-carbon design option for waste heat recovery in district heating.
SUSTAINABLE ENERGY GRIDS & NETWORKS
(2022)
Article
Green & Sustainable Science & Technology
Tihomir Tomic, Irma Kremer, Daniel R. Schneider
Summary: Previous studies on waste management sustainability often overlook time-dependent changes and focus on independent analyses or multicriterial ranking. This study introduces a new Economic Efficiency of Resource Recovery index and considers legislation-related changes, providing insights into overall sustainability trends.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Energy & Fuels
Marko Mimica, Dominik F. Dominkovic, Vedran Kirinc, Goran Krajac
Summary: This study introduces a method that soft-links energy planning and power flow models to compare different energy planning scenarios and assess implementation possibilities. Applied to interconnected islands, the method revealed that a detailed spatial approach can reduce battery capacity and increase renewable energy generation capacity, but also result in higher total system costs. Results from the power flow model showed that the highest voltage deviation was 16% higher than the nominal voltage level.
Review
Green & Sustainable Science & Technology
D. F. Dominkovic, J. M. Weinand, F. Scheller, M. D'Andrea, R. McKenna
Summary: The field of Energy System Analysis has experienced exponential growth in research output in the past two decades, with a concentration of publications in a small number of countries and institutions. Collaboration is mainly within the same university or at least the same country. There is a strong link among the most successful journals, authors and institutions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Luka Herc, Antun Pfeifer, Neven Duic
Summary: This study focuses on the intermediate steps towards decarbonization, exploring the optimization of energy system structure and the use of various technologies to maximize renewable energy utilization and minimize carbon emissions.
Article
Energy & Fuels
Hrvoje Stancin, Antun Pfeifer, Christoforos Perakis, Nikolaos Stefanatos, Marko Damasiotis, Stefano Magaudda, Federica Di Pietrantonio, Hrvoje Mikulcic
Summary: The decarbonization of remote or isolated island communities is a major challenge, but it comes with environmental, economic, and social benefits. Offshore wind power, particularly, is gaining traction as the key driver in the energy transition process, providing advantages for local communities and potential investors. The case study of Crete highlights that by integrating offshore and onshore wind and photovoltaics, decarbonization can partially reduce dependence on fossil fuels and meet around 70% of total electricity demand.
FRONTIERS IN ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Amos Schledorn, Rune Gronborg Junker, Daniela Guericke, Henrik Madsen, Dominik Franjo Dominkovic
Summary: The paper proposes an optimal soft-linking framework, named Frigg, for energy system and demand response models to determine the economic potential and cost savings of demand response. A case study on the district heating system in Ejby, Denmark, shows that demand response can achieve cost savings, but heat storage may provide more cost savings in certain situations.
Article
Green & Sustainable Science & Technology
Tihomir Tomic, Iva Slatina, Daniel Rolph Schneider
Summary: The EU legislation lacks detailed regulations on energy recovery of waste and groups all thermochemical conversion technologies together. This research evaluates the technologies for plastic waste recovery and highlights the need for revising existing legislation and technology classifications. The study finds that pyrolysis and gasification have lower impacts on global warming, abiotic depletion, and cumulative energy demand compared to incineration. Alternative thermochemical recovery technologies can contribute to sustainable development goals by reducing environmental impacts and import dependence.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Thermodynamics
Luka Herc, Antun Pfeifer, Neven Duic, Fei Wang
Summary: Since the signing of the Paris Climate Agreement, the European Union has taken steps to increase the proportion of renewable energy and limit global warming. With the European Green Deal, the EU has set a plan to achieve carbon neutrality by 2050 through the use of renewable energy generation, sector coupling, and energy storage technologies. The most effective technologies identified in this research are vehicle-to-grid technology, smart charging, energy efficiency improvements, and pumped hydro storage.
Article
Green & Sustainable Science & Technology
Gonzalo Parrado-Hernando, Luka Herc, Antun Pfeifer, Inigo Capellan-Perez, Ilija Batas Bjelic, Neven Duic, Fernando Frechoso-Escudero, Luis Javier Miguel Gonzalez, Vladimir Z. Gjorgievski
Summary: Long-term energy planning is shifting towards finer temporal and spatial resolutions to achieve decarbonization. However, current integrated assessment models lack the ability to capture the specific dynamics of supply and demand in the transition to renewable energy sources. This article presents a method to translate an hourly-resolution energy model into a yearly-resolution model and validates it using the European Union region.
Article
Multidisciplinary Sciences
Irma Kremer, Tihomir Tomic, Zvonimir Katancic, Zlata Hrnjak-Murgic, Matko Erceg, Stefano Vecchio Ciprioti, Daniel Rolph Schneider
Summary: This study investigated the catalytic pyrolysis of multi-layered plastic food packaging waste and determined its thermal behavior, kinetic parameters, and kinetic model. It was found that the pyrolysis process consisted of multiple decomposition stages and different reaction types. The doping of the catalyst lowered the activation energy of the reaction and enhanced the reactivity on the catalyst surface.
Article
Thermodynamics
Gonzalo Parrado-Hernando, Pfeifer Antun, Frechoso Fernando, Miguel Gonzalez Luis Javier, Duic Neven
Summary: This article reports on the Spanish national energy and climate plan, which aims to achieve a net zero-carbon economy by 2050. The article introduces the target scenario of the plan and Spain's efforts in energy transition. The research findings indicate that Spain is expected to achieve a 74% share of renewable energy by 2030 and could run on 100% renewable energy by 2050.
Article
Environmental Sciences
Tihomir Tomic, Irma Kremer, Stefano Vecchio Ciprioti, Daniel Rolph Schneider
Summary: This research analyzed the composition and characteristics of packaging waste, rejected waste, and refuse-derived fuel (RDF) collected from municipal waste management system. The efficiency of waste separation and RDF production were tracked, and the results showed high separation efficiency and energy recovery potential. The study highlights the importance of individual waste components' separation efficiency in alternative fuel production and the connection between increasing material recovery share and the suitability of residual waste for further recovery and valorization.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
F. Feijoo, A. Pfeifer, L. Herc, D. Groppi, N. Duic
Summary: This research presents a new long-term energy planning model that takes into account endogenous capacity investment, energy dispatch, Power-to-X, and demand response technologies. The model aims to minimize the total capacity investment cost and operational cost while satisfying energy demand. It considers the interconnections among different demand sectors and is applied to analyze the decarbonization of the Croatian energy system. The study demonstrates that Power-to-X technologies can provide the needed flexibility for variable renewable energy sources.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Julien Leprince, Amos Schledorn, Daniela Guericke, Dominik Franjo Dominkovic, Henrik Madsen, Wim Zeiler
Summary: To achieve the carbon emission reduction goals in line with the Paris agreement, it is crucial to plan resilient and sustainable energy systems. This study focuses on bridging the gap between building occupants and smart-city energy networks to improve urban energy planning. The impact of user behavior on energy planning is assessed through a stochastic energy community sizing and operation problem, and the results reveal that occupant behavior is a significant factor affecting energy community planning. This research highlights the importance of connecting occupants to cities for more resilient and efficient urban energy strategies.
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.
