Pub Date : 2025-04-18DOI: 10.1016/j.rser.2025.115760
Tao Cai, Aikun Tang, Qian Zhang, Qiang Ni, Jianming Li
Ammonia, as a carbon-free and hydrogen energy carrier, is receiving emerging interest to mitigate anthropogenic carbon dioxide emissions from power generating systems and aviation propulsion sectors. While ammonia combustion is a theoretically feasible alternative to tackle greenhouse gas issues, the realization of such a renewable fuel in large-scale combustion systems requires an understanding of turbulent flame dynamics and stability in consideration of the poor combustion characteristics such as the low laminar burning velocity and high ignition energy. This paper reviews the recent advances and developments of ammonia turbulent combustion that contribute to providing insight into the combustion fundamentals and guiding combustor design for practical applications. The fundamental characteristics of ammonia turbulent flames are first introduced. This is followed by a detailed discussion concerning the stabilization enhancement strategies of ammonia turbulent flames, along with the underlying physical/chemical mechanisms. Furthermore, the dynamical thermoacoustic instability of ammonia flames possibly occurring within gas turbine engines is characterized, with the emphasis being placed on the generation mechanisms and mitigation means. Finally, this paper concludes with future research directions and perspectives.
{"title":"A systematic review of enhancing stabilization performance and mitigating thermoacoustic instability in renewable ammonia turbulent combustion","authors":"Tao Cai, Aikun Tang, Qian Zhang, Qiang Ni, Jianming Li","doi":"10.1016/j.rser.2025.115760","DOIUrl":"10.1016/j.rser.2025.115760","url":null,"abstract":"<div><div>Ammonia, as a carbon-free and hydrogen energy carrier, is receiving emerging interest to mitigate anthropogenic carbon dioxide emissions from power generating systems and aviation propulsion sectors. While ammonia combustion is a theoretically feasible alternative to tackle greenhouse gas issues, the realization of such a renewable fuel in large-scale combustion systems requires an understanding of turbulent flame dynamics and stability in consideration of the poor combustion characteristics such as the low laminar burning velocity and high ignition energy. This paper reviews the recent advances and developments of ammonia turbulent combustion that contribute to providing insight into the combustion fundamentals and guiding combustor design for practical applications. The fundamental characteristics of ammonia turbulent flames are first introduced. This is followed by a detailed discussion concerning the stabilization enhancement strategies of ammonia turbulent flames, along with the underlying physical/chemical mechanisms. Furthermore, the dynamical thermoacoustic instability of ammonia flames possibly occurring within gas turbine engines is characterized, with the emphasis being placed on the generation mechanisms and mitigation means. Finally, this paper concludes with future research directions and perspectives.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115760"},"PeriodicalIF":16.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-18DOI: 10.1016/j.rser.2025.115740
Kun Yang , Ruiwen Zou , Wei Zhang , Xiding Zeng , Zhangyu Li , Jiahong Guo
Introduction
Positive Energy Districts (PEDs) can fully utilize renewable energy to reduce carbon emissions and address global challenges such as environmental pollution, climate change, and energy shortages. However, regional differences and the absence of a comprehensive evaluation method have led to uneven global PED development. The purpose of this study is to promote the more balanced and widespread development and construction of PEDs globally by proposing practical methods for their realization.
Methods
A comprehensive review of research literature on Positive Energy Districts (PEDs) from the past two decades was conducted. The study focused on the flexibility and resilience of PEDs, performing a coupled analysis from energy, economic, social, and environmental perspectives to explore the key factors influencing the realization of PEDs.
Results
The definition of PEDs was clarified, and existing projects in various regions were reviewed. It was found that energy management systems, smart grids, and electric vehicles have a significant impact on the energy flexibility of PEDs. Furthermore, economic and technological factors contribute to the uneven development of PEDs. Key elements for achieving PEDs in the context of energy system construction were identified. Through case analysis, a two-stage transformation method for converting industrial towns into PEDs was proposed.
Conclusion
The findings indicate that PED energy systems require coordinated regulation through diverse renewable energy and storage technologies. Additionally, factors such as environmental emissions, land use, and energy justice must be considered in PED construction. This study addresses current shortcomings and contributes to the knowledge base on PEDs.
{"title":"Comprehensive review of Positive Energy Districts: Multidimensional analysis of energy, economic, social, and environmental aspects","authors":"Kun Yang , Ruiwen Zou , Wei Zhang , Xiding Zeng , Zhangyu Li , Jiahong Guo","doi":"10.1016/j.rser.2025.115740","DOIUrl":"10.1016/j.rser.2025.115740","url":null,"abstract":"<div><h3>Introduction</h3><div>Positive Energy Districts (PEDs) can fully utilize renewable energy to reduce carbon emissions and address global challenges such as environmental pollution, climate change, and energy shortages. However, regional differences and the absence of a comprehensive evaluation method have led to uneven global PED development. The purpose of this study is to promote the more balanced and widespread development and construction of PEDs globally by proposing practical methods for their realization.</div></div><div><h3>Methods</h3><div>A comprehensive review of research literature on Positive Energy Districts (PEDs) from the past two decades was conducted. The study focused on the flexibility and resilience of PEDs, performing a coupled analysis from energy, economic, social, and environmental perspectives to explore the key factors influencing the realization of PEDs.</div></div><div><h3>Results</h3><div>The definition of PEDs was clarified, and existing projects in various regions were reviewed. It was found that energy management systems, smart grids, and electric vehicles have a significant impact on the energy flexibility of PEDs. Furthermore, economic and technological factors contribute to the uneven development of PEDs. Key elements for achieving PEDs in the context of energy system construction were identified. Through case analysis, a two-stage transformation method for converting industrial towns into PEDs was proposed.</div></div><div><h3>Conclusion</h3><div>The findings indicate that PED energy systems require coordinated regulation through diverse renewable energy and storage technologies. Additionally, factors such as environmental emissions, land use, and energy justice must be considered in PED construction. This study addresses current shortcomings and contributes to the knowledge base on PEDs.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115740"},"PeriodicalIF":16.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-18DOI: 10.1016/j.rser.2025.115672
Hessah Althalab , Naser Ali , Shikha A. Ebrahim , Ammar M. Bahman
This study evaluates the impact of carbon-based nano-lubricants on air conditioning (AC) systems in hot climates, focusing on thermophysical, tribological, and stability properties. Nano-lubricants were formulated using POE32 oil with short single-walled carbon nanotubes (short-SWCNTs), short multi-walled carbon nanotubes (short-MWCNTs), and graphene (GN) at concentrations from 0.01 to 0.10 vol.%. A two-step mixing approach was employed, and properties were analyzed across 10 °C to 100 °C. Results showed negligible density changes with concentration but up to a 6% variation with temperature. Specific heat capacity decreased with higher nanomaterial concentrations, with a 6.85% reduction at 0.1 vol.% short-SWCNTs, at 100 °C. Thermal conductivity enhancements were minimal at 0.01 vol.% but reached 2.21% with 0.10 vol.% GN. Dynamic viscosity increased significantly at 0.05 and 0.10 vol.%, peaking at 15.31%. Tribological analysis revealed optimal coefficient of friction (COF) reductions at 0.025, 0.05, and 0.01 vol.% for short-SWCNTs, short-MWCNTs, and GN, respectively. In terms of dispersion stability, using three different analyses for verification, all as prepared nano-lubricants exhibited good physical stability up to 5 days, and then loses their static stability condition with time. The figures of merits (FOMs) analysis showed that optimized carbon-based nano-lubricant concentrations can enhance heat dissipation and compressor performance with minimal energy impact. These findings provide valuable insights for selecting optimal nano-lubricants for AC systems. Future work will focus on evaluating their compatibility with refrigerants and assessing their impact on compressor performance under high ambient conditions.
{"title":"Air conditioning compressor lubricant enhancement using carbon-based nanomaterials for hot climates","authors":"Hessah Althalab , Naser Ali , Shikha A. Ebrahim , Ammar M. Bahman","doi":"10.1016/j.rser.2025.115672","DOIUrl":"10.1016/j.rser.2025.115672","url":null,"abstract":"<div><div>This study evaluates the impact of carbon-based nano-lubricants on air conditioning (AC) systems in hot climates, focusing on thermophysical, tribological, and stability properties. Nano-lubricants were formulated using POE32 oil with short single-walled carbon nanotubes (short-SWCNTs), short multi-walled carbon nanotubes (short-MWCNTs), and graphene (GN) at concentrations from 0.01 to 0.10 vol.%. A two-step mixing approach was employed, and properties were analyzed across 10 °C to 100 °C. Results showed negligible density changes with concentration but up to a 6% variation with temperature. Specific heat capacity decreased with higher nanomaterial concentrations, with a 6.85% reduction at 0.1 vol.% short-SWCNTs, at 100 °C. Thermal conductivity enhancements were minimal at 0.01 vol.% but reached 2.21% with 0.10 vol.% GN. Dynamic viscosity increased significantly at 0.05 and 0.10 vol.%, peaking at 15.31%. Tribological analysis revealed optimal coefficient of friction (COF) reductions at 0.025, 0.05, and 0.01 vol.% for short-SWCNTs, short-MWCNTs, and GN, respectively. In terms of dispersion stability, using three different analyses for verification, all as prepared nano-lubricants exhibited good physical stability up to 5 days, and then loses their static stability condition with time. The figures of merits (FOMs) analysis showed that optimized carbon-based nano-lubricant concentrations can enhance heat dissipation and compressor performance with minimal energy impact. These findings provide valuable insights for selecting optimal nano-lubricants for AC systems. Future work will focus on evaluating their compatibility with refrigerants and assessing their impact on compressor performance under high ambient conditions.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115672"},"PeriodicalIF":16.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1016/j.rser.2025.115755
Jiani Wang , Yue Lian , Jingling Shao , Siwei Cheng , He Zhao , Cangjian Zhou , Guiyun Yu , Yong Dai , Huaihao Zhang
Solar-driven water evaporation is a new water desalination strategy. As its key components, the photothermal conversion materials (PTCM) show important research significance. Among them, biomass carbon materials have been widely studied because of their wide source, simple preparation and high photothermal conversion efficiency. This review introduces the photothermal conversion mechanism and water evaporation efficiency of various biomass materials in solar-driven water evaporation. Then, the preparation methods, classification of biomass based light evaporator (BLE), and their corresponding advantages in solar-driven water evaporation are also described. Finally, the problems of biomass carbon materials are summarized, as well as the proposed future research directions.
{"title":"A review: Solar-driven water evaporation based on biomass carbon materials","authors":"Jiani Wang , Yue Lian , Jingling Shao , Siwei Cheng , He Zhao , Cangjian Zhou , Guiyun Yu , Yong Dai , Huaihao Zhang","doi":"10.1016/j.rser.2025.115755","DOIUrl":"10.1016/j.rser.2025.115755","url":null,"abstract":"<div><div>Solar-driven water evaporation is a new water desalination strategy. As its key components, the photothermal conversion materials (PTCM) show important research significance. Among them, biomass carbon materials have been widely studied because of their wide source, simple preparation and high photothermal conversion efficiency. This review introduces the photothermal conversion mechanism and water evaporation efficiency of various biomass materials in solar-driven water evaporation. Then, the preparation methods, classification of biomass based light evaporator (BLE), and their corresponding advantages in solar-driven water evaporation are also described. Finally, the problems of biomass carbon materials are summarized, as well as the proposed future research directions.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115755"},"PeriodicalIF":16.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1016/j.rser.2025.115690
Jessica R. Molina , Juan O. Molina , Mc Joshua Piñas , Manfred Horn , Mónica Gómez
The frosts in Peru's high Andean regions pose significant risk to life and health, particularly affecting children and older adults. Over the past few decades, various academic research projects and massification programmes led by the government and non-governmental organizations have been aimed to mitigate the impact of freezing temperatures on dwellings. However, these efforts remain insufficient, as a significant gap persists due to the lack of quantitative data on the thermal performance of dwelling envelopes and the temperature ranges required to maintain habitable and thermally healthy conditions for daily activities. This study compiles information on bioclimatic dwellings constructed in Peruvian high Andean regions at altitudes exceeding 3,500 m above sea level (masl). Academic research projects have documented the construction and rehabilitation of dwellings, as well as experimental modules with in situ indoor temperature monitoring. Additionally, massification programmes have resulted in the construction of over 400 dwellings. Thermal analyses indicate that attached greenhouses and skylights are among the most effective passive bioclimatic techniques for improving indoor thermal conditions.
{"title":"High Andean bioclimatic dwellings in Peru: climatic conditions, vulnerability of the population and review of academic studies and massification programmes","authors":"Jessica R. Molina , Juan O. Molina , Mc Joshua Piñas , Manfred Horn , Mónica Gómez","doi":"10.1016/j.rser.2025.115690","DOIUrl":"10.1016/j.rser.2025.115690","url":null,"abstract":"<div><div>The frosts in Peru's high Andean regions pose significant risk to life and health, particularly affecting children and older adults. Over the past few decades, various academic research projects and massification programmes led by the government and non-governmental organizations have been aimed to mitigate the impact of freezing temperatures on dwellings. However, these efforts remain insufficient, as a significant gap persists due to the lack of quantitative data on the thermal performance of dwelling envelopes and the temperature ranges required to maintain habitable and thermally healthy conditions for daily activities. This study compiles information on bioclimatic dwellings constructed in Peruvian high Andean regions at altitudes exceeding 3,500 m above sea level (masl). Academic research projects have documented the construction and rehabilitation of dwellings, as well as experimental modules with <em>in situ</em> indoor temperature monitoring. Additionally, massification programmes have resulted in the construction of over 400 dwellings. Thermal analyses indicate that attached greenhouses and skylights are among the most effective passive bioclimatic techniques for improving indoor thermal conditions.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115690"},"PeriodicalIF":16.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-17DOI: 10.1016/j.rser.2025.115713
Uttam Kumar Jana , Dharini Pandey , Naveen Kango
Huge amounts of mannan-rich wastes are generated because of agro-industrial processing of legumes, oil palms, coffee seeds, yeasts etc. Looking into the enormity of this produce, it becomes important to utilize this agro-waste for human necessities and exploit it advantageously to create substances that are beneficial to both humans and animals, while avoiding its indiscriminate burning or dumping into water bodies. Plant cell wall mannans make the second most abundant hemicellulosic component after xylan. The use of mannans and mannan-rich agro-wastes in various industries has gained importance due to potential economic and environmental benefits. Mannan-rich biomass is dispersed over leguminous crops (guar gum, locust bean gum) and agro-industrial by products (spent coffee grounds, copra meal, palm kernel cake) and can be suitably exploited to produce biochar, prebiotic oligosaccharides, biofuel, bioethanol, and services such as dye remediation and drug delivery etc. This review summarizes recent developments of mannan rich agro-wastes and the prospects of their industrial and biomedical applications.
{"title":"Advances in the utilization of mannan-rich agricultural wastes and gums for the circular bioeconomy","authors":"Uttam Kumar Jana , Dharini Pandey , Naveen Kango","doi":"10.1016/j.rser.2025.115713","DOIUrl":"10.1016/j.rser.2025.115713","url":null,"abstract":"<div><div>Huge amounts of mannan-rich wastes are generated because of agro-industrial processing of legumes, oil palms, coffee seeds, yeasts etc. Looking into the enormity of this produce, it becomes important to utilize this agro-waste for human necessities and exploit it advantageously to create substances that are beneficial to both humans and animals, while avoiding its indiscriminate burning or dumping into water bodies. Plant cell wall mannans make the second most abundant hemicellulosic component after xylan. The use of mannans and mannan-rich agro-wastes in various industries has gained importance due to potential economic and environmental benefits. Mannan-rich biomass is dispersed over leguminous crops (guar gum, locust bean gum) and agro-industrial by products (spent coffee grounds, copra meal, palm kernel cake) and can be suitably exploited to produce biochar, prebiotic oligosaccharides, biofuel, bioethanol, and services such as dye remediation and drug delivery etc. This review summarizes recent developments of mannan rich agro-wastes and the prospects of their industrial and biomedical applications.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115713"},"PeriodicalIF":16.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-16DOI: 10.1016/j.rser.2025.115749
Xu Luo, Xue Gong, Jianjun Xia
As global population grows and urbanization accelerates, waste management becomes a major challenge worldwide. Energy recovery can play a key role in waste management, and its potential from municipal solid waste (MSW) is important in waste management planning. This study develops an assessment framework to evaluate the potential of waste-to-energy (WtE) technology for supplying industrial steam and reducing carbon emissions, supporting improvements in the energy efficiency of WtE systems in regions with limited space heating demand. The framework integrates MSW forecasting, energy system modeling, spatial demand–supply matching, and evaluation of technical, economic, and environmental performance. Hainan, China, serves as a case study to demonstrate its application. Data were collected through statistics, questionnaires, and field surveys to evaluate local MSW resources and industrial steam demand. MSW prediction and WtE models were constructed to estimate steam supply by 2030, followed by an evaluation of supply–demand matching and carbon reduction potential. The results showed that steam supplied by WtE plants can significantly reduce fossil fuel use and associated emissions in manufacturing, provided appropriate industrial heat demand exists. Spatial coordination of MSW collection can improve the alignment between waste supply and steam demand, and optimizing existing incentive structures can enhance economic viability and climate benefits. In the Hainan case, this approach can reduce carbon emissions from manufacturing plants by up to 87.1 %, and overall carbon emissions by 21.6 %. This study aims to inform future MSW management and industrial energy supply decisions, and contribute to reducing carbon emissions in global industrial operations.
{"title":"Assessment of the waste-to-energy potential for industrial steam supply and carbon emission reduction in Hainan, China","authors":"Xu Luo, Xue Gong, Jianjun Xia","doi":"10.1016/j.rser.2025.115749","DOIUrl":"10.1016/j.rser.2025.115749","url":null,"abstract":"<div><div>As global population grows and urbanization accelerates, waste management becomes a major challenge worldwide. Energy recovery can play a key role in waste management, and its potential from municipal solid waste (MSW) is important in waste management planning. This study develops an assessment framework to evaluate the potential of waste-to-energy (WtE) technology for supplying industrial steam and reducing carbon emissions, supporting improvements in the energy efficiency of WtE systems in regions with limited space heating demand. The framework integrates MSW forecasting, energy system modeling, spatial demand–supply matching, and evaluation of technical, economic, and environmental performance. Hainan, China, serves as a case study to demonstrate its application. Data were collected through statistics, questionnaires, and field surveys to evaluate local MSW resources and industrial steam demand. MSW prediction and WtE models were constructed to estimate steam supply by 2030, followed by an evaluation of supply–demand matching and carbon reduction potential. The results showed that steam supplied by WtE plants can significantly reduce fossil fuel use and associated emissions in manufacturing, provided appropriate industrial heat demand exists. Spatial coordination of MSW collection can improve the alignment between waste supply and steam demand, and optimizing existing incentive structures can enhance economic viability and climate benefits. In the Hainan case, this approach can reduce carbon emissions from manufacturing plants by up to 87.1 %, and overall carbon emissions by 21.6 %. This study aims to inform future MSW management and industrial energy supply decisions, and contribute to reducing carbon emissions in global industrial operations.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115749"},"PeriodicalIF":16.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-16DOI: 10.1016/j.rser.2025.115683
Arno Zang , Hannes Hofmann , Yinlin Ji , Li Zhuang , Guanyi Lu , Andrew Bunger
In its natural environment a rock mass is subjected to stress and temperature cycles which significantly affect the rock strength and failure behavior. Examples include tectonic stress variations and earthquake cycles, geothermal unrest before volcanic eruptions, Earth tides, seasonal water fluctuations and low-frequency stress and temperature cycles due to climate change. Underground engineering structures such as salt caverns, radioactive waste disposal facilities, mines, as well as carbon dioxide and hydrogen storage sites also experience local cyclic changes in state variables. In this study we review cyclic operational processes in mining, petroleum and geothermal industries. We apply fundamental concepts and methods from fatigue of materials to rock mechanics and geoscience to better describe and understand hydraulic fracturing, hydraulic shearing and complex mixed-mode fracturing in both laboratory- and field-scale cyclic injection operations. The review of available literature shows that control of hydraulic fractures by cyclic injection involves the following elements: (a) managing the fracture propagation path and associated damage pattern, (b) enhancing reservoir permeability to increase productivity or injectivity, and (c) mitigating induced seismicity. The importance of rock hydraulic fatigue is highlighted in the context of the energy transition, as emerging renewable energy technologies, such as Enhanced Geothermal Systems, can be made available at earlier convenience and more efficient and safer with a better understanding of the underlying processes. Thus, although largely overlooked, rock hydraulic fatigue has the potential to contribute to zero emissions climate policy goals.
{"title":"How rock hydraulic fatigue methods from mining and petroleum industry assist in unlocking deep heat for a clean energy future","authors":"Arno Zang , Hannes Hofmann , Yinlin Ji , Li Zhuang , Guanyi Lu , Andrew Bunger","doi":"10.1016/j.rser.2025.115683","DOIUrl":"10.1016/j.rser.2025.115683","url":null,"abstract":"<div><div>In its natural environment a rock mass is subjected to stress and temperature cycles which significantly affect the rock strength and failure behavior. Examples include tectonic stress variations and earthquake cycles, geothermal unrest before volcanic eruptions, Earth tides, seasonal water fluctuations and low-frequency stress and temperature cycles due to climate change. Underground engineering structures such as salt caverns, radioactive waste disposal facilities, mines, as well as carbon dioxide and hydrogen storage sites also experience local cyclic changes in state variables. In this study we review cyclic operational processes in mining, petroleum and geothermal industries. We apply fundamental concepts and methods from fatigue of materials to rock mechanics and geoscience to better describe and understand hydraulic fracturing, hydraulic shearing and complex mixed-mode fracturing in both laboratory- and field-scale cyclic injection operations. The review of available literature shows that control of hydraulic fractures by cyclic injection involves the following elements: (a) managing the fracture propagation path and associated damage pattern, (b) enhancing reservoir permeability to increase productivity or injectivity, and (c) mitigating induced seismicity. The importance of rock hydraulic fatigue is highlighted in the context of the energy transition, as emerging renewable energy technologies, such as Enhanced Geothermal Systems, can be made available at earlier convenience and more efficient and safer with a better understanding of the underlying processes. Thus, although largely overlooked, rock hydraulic fatigue has the potential to contribute to zero emissions climate policy goals.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115683"},"PeriodicalIF":16.3,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-15DOI: 10.1016/j.rser.2025.115745
B.S. Balume , L. Bijnens , S. Abrams , B.B. Banza , W. Deferme
This study examines the key drivers behind the continued reliance on traditional biomass fuels such as charcoal and firewood in urban areas of developing countries, including the city of Lubumbashi. The paper focuses on economic constraints, health problems associated with the use of these fuels, the environmental consequences of growing use and also looks at the alternatives for cooking and their accessibility.
The various reasons behind the growing and constant use of charcoal and firewood are examined in the context of the city of Lubumbashi and other developing countries. However, the continuous supply of charcoal and firewood not only contributes to the degradation of forests and the extinction of species, but also disrupts the livelihoods of forest-dependent families and exacerbates soil erosion. The charcoal production process is intrinsically damaging to both the environment and human well-being. Not only does it emit large quantities of CO2, contributing to atmospheric pollution, but it also presents health risks for both producers and users. The smoke and soot generated during charcoal production expose people to harmful substances, leading to adverse health effects and even premature death, particularly among children. This review also discusses the impact of this production and use on the education of women and children, who are responsible for cooking and harvesting firewood, resulting in a higher illiteracy rate among women. Faced with the need to take global action to mitigate the impact of climate change, global carbon dioxide emissions must be drastically reduced to meet the Paris Agreement target of zero net emissions by 2050. A practical and sustainable solution is discussed in this review as an alternative to traditional cooking systems namely solar cooking, which offers enormous potential, provided it is accessible, and is an excellent alternative to the heavy reliance on biomass for household energy needs in developing countries.
{"title":"Charcoal and firewood use in urban areas of developing countries: Drivers, consequences, and the need for clean cooking solutions","authors":"B.S. Balume , L. Bijnens , S. Abrams , B.B. Banza , W. Deferme","doi":"10.1016/j.rser.2025.115745","DOIUrl":"10.1016/j.rser.2025.115745","url":null,"abstract":"<div><div>This study examines the key drivers behind the continued reliance on traditional biomass fuels such as charcoal and firewood in urban areas of developing countries, including the city of Lubumbashi. The paper focuses on economic constraints, health problems associated with the use of these fuels, the environmental consequences of growing use and also looks at the alternatives for cooking and their accessibility.</div><div>The various reasons behind the growing and constant use of charcoal and firewood are examined in the context of the city of Lubumbashi and other developing countries. However, the continuous supply of charcoal and firewood not only contributes to the degradation of forests and the extinction of species, but also disrupts the livelihoods of forest-dependent families and exacerbates soil erosion. The charcoal production process is intrinsically damaging to both the environment and human well-being. Not only does it emit large quantities of CO<sub>2</sub>, contributing to atmospheric pollution, but it also presents health risks for both producers and users. The smoke and soot generated during charcoal production expose people to harmful substances, leading to adverse health effects and even premature death, particularly among children. This review also discusses the impact of this production and use on the education of women and children, who are responsible for cooking and harvesting firewood, resulting in a higher illiteracy rate among women. Faced with the need to take global action to mitigate the impact of climate change, global carbon dioxide emissions must be drastically reduced to meet the Paris Agreement target of zero net emissions by 2050. A practical and sustainable solution is discussed in this review as an alternative to traditional cooking systems namely solar cooking, which offers enormous potential, provided it is accessible, and is an excellent alternative to the heavy reliance on biomass for household energy needs in developing countries.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115745"},"PeriodicalIF":16.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-15DOI: 10.1016/j.rser.2025.115728
Sunghoon Lim , Taewan Kim , Kwang Y. Lee , Donghee Choi , Jung-Wook Park
The characteristics of modern power systems are significantly changing due to the high penetration of renewable energy sources (RESs). While this energy transition offers numerous economic and environmental benefits, it may cause serious frequency stability problems if proper actions are not taken. In order to address these issues, all key factors, such as inertia, ramp rate of frequency response, primary frequency reserve, etc., must be systematically analyzed with their accurate cause and effect on frequency stability. This paper first defines the relationships between the primary and secondary factors and frequency stability indices. Then, the paper clarifies seven representative cases for possible frequency stability problems in modern power systems, considering the penetration levels and variations of RESs, with a comprehensive assessment. Thereafter, the paper provides an overview of solutions for enhancing frequency stability and discusses potential solutions for each representative case. The effectiveness of proposed analysis is verified by case studies on the IEEE 39-bus test system and practical Jeju Island power system. The results show that this approach can provide valuable information for making the proper decisions and measures for power systems with a high penetration of RESs.
{"title":"Impact of high penetration of renewables on power system frequency response: A review and verification","authors":"Sunghoon Lim , Taewan Kim , Kwang Y. Lee , Donghee Choi , Jung-Wook Park","doi":"10.1016/j.rser.2025.115728","DOIUrl":"10.1016/j.rser.2025.115728","url":null,"abstract":"<div><div>The characteristics of modern power systems are significantly changing due to the high penetration of renewable energy sources (RESs). While this energy transition offers numerous economic and environmental benefits, it may cause serious frequency stability problems if proper actions are not taken. In order to address these issues, all key factors, such as inertia, ramp rate of frequency response, primary frequency reserve, etc., must be systematically analyzed with their accurate cause and effect on frequency stability. This paper first defines the relationships between the primary and secondary factors and frequency stability indices. Then, the paper clarifies seven representative cases for possible frequency stability problems in modern power systems, considering the penetration levels and variations of RESs, with a comprehensive assessment. Thereafter, the paper provides an overview of solutions for enhancing frequency stability and discusses potential solutions for each representative case. The effectiveness of proposed analysis is verified by case studies on the IEEE 39-bus test system and practical Jeju Island power system. The results show that this approach can provide valuable information for making the proper decisions and measures for power systems with a high penetration of RESs.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"217 ","pages":"Article 115728"},"PeriodicalIF":16.3,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号