Pub Date : 2024-07-01DOI: 10.1016/j.rser.2024.114672
Anna Gorbatcheva , Nicole Watson , Alexandra Schneiders, David Shipworth, Michael J. Fell
To facilitate a successful integration of distributed energy resources into the electricity generation mix, new forms of energy markets must be considered. Concepts such as Peer-to-peer energy trading (P2P), transactive energy (TE) and community/collective self-consumption (CSC) are frequently mentioned as solutions to this challenge. Despite increasing interest from industry, policy, and academia, the field lacks a shared understanding of this class of models. This need is addressed by presenting sets of shared and distinct characteristics which define P2P, TE and CSC. Our analysis is based on a series of expert group interviews with regulators, industry, and academics across 13 countries, and a systematic and targeted literature review of 133 papers. Findings show that P2P/TE/CSC models can be described as sub-markets that operate within or alongside traditional energy markets and enable trading or sharing of energy using an automated approach. They focus on promoting and supporting local energy generation and consumption using price negotiation mechanisms that reflect the aims of the market. The paper also presents sets of characteristics which differentiate P2P, TE, and CSC from one another and sets out guiding definitions to be used as a reference point. The main differences between these models stem from the goal they are trying to achieve and the contexts they are deployed in. Findings from this analysis can support development of a shared understanding of this class of models across multiple disciplinary perspectives and applications.
{"title":"Defining characteristics of peer-to-peer energy trading, transactive energy, and community self-consumption: A review of literature and expert perspectives","authors":"Anna Gorbatcheva , Nicole Watson , Alexandra Schneiders, David Shipworth, Michael J. Fell","doi":"10.1016/j.rser.2024.114672","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114672","url":null,"abstract":"<div><p>To facilitate a successful integration of distributed energy resources into the electricity generation mix, new forms of energy markets must be considered. Concepts such as Peer-to-peer energy trading (P2P), transactive energy (TE) and community/collective self-consumption (CSC) are frequently mentioned as solutions to this challenge. Despite increasing interest from industry, policy, and academia, the field lacks a shared understanding of this class of models. This need is addressed by presenting sets of shared and distinct characteristics which define P2P, TE and CSC. Our analysis is based on a series of expert group interviews with regulators, industry, and academics across 13 countries, and a systematic and targeted literature review of 133 papers. Findings show that P2P/TE/CSC models can be described as sub-markets that operate within or alongside traditional energy markets and enable trading or sharing of energy using an automated approach. They focus on promoting and supporting local energy generation and consumption using price negotiation mechanisms that reflect the aims of the market. The paper also presents sets of characteristics which differentiate P2P, TE, and CSC from one another and sets out guiding definitions to be used as a reference point. The main differences between these models stem from the goal they are trying to achieve and the contexts they are deployed in. Findings from this analysis can support development of a shared understanding of this class of models across multiple disciplinary perspectives and applications.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1364032124003988/pdfft?md5=3d23a363752fa1cd56cc86a8b3c1a496&pid=1-s2.0-S1364032124003988-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-29DOI: 10.1016/j.rser.2024.114708
Tomoaki Nakaishi , Andrew Chapman
Eco-labels are one potential tool to facilitate communication between producers and consumers and to promote environmental and social policies. The main objective of this study is to investigate the successes and limitations of eco-labels through a comprehensive review of the academic literature and the label programs themselves, and to discuss the potential and directions for future academic research and eco-labels. The initial literature review examined the definition, characteristics, objectives, successes, and challenges of eco-labels and identified essential elements of successful labeling, such as consumer awareness and acceptance. The subsequent review of label programs examined the characteristics and trends of 456 label programs in 199 countries based on a large eco-label database. Several additional analyses comprehensively synthesized the results of these two studies and provided specific suggestions for future academic research and label programs. In conclusion, at this time there is limited evidence that eco-labels can serve as effective communication and policy tools. However, there also remain significant improvement opportunities for many label programs to realize their potential.
{"title":"Eco-labels as a communication and policy tool: A comprehensive review of academic literature and global label initiatives","authors":"Tomoaki Nakaishi , Andrew Chapman","doi":"10.1016/j.rser.2024.114708","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114708","url":null,"abstract":"<div><p>Eco-labels are one potential tool to facilitate communication between producers and consumers and to promote environmental and social policies. The main objective of this study is to investigate the successes and limitations of eco-labels through a comprehensive review of the academic literature and the label programs themselves, and to discuss the potential and directions for future academic research and eco-labels. The initial literature review examined the definition, characteristics, objectives, successes, and challenges of eco-labels and identified essential elements of successful labeling, such as consumer awareness and acceptance. The subsequent review of label programs examined the characteristics and trends of 456 label programs in 199 countries based on a large eco-label database. Several additional analyses comprehensively synthesized the results of these two studies and provided specific suggestions for future academic research and label programs. In conclusion, at this time there is limited evidence that eco-labels can serve as effective communication and policy tools. However, there also remain significant improvement opportunities for many label programs to realize their potential.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478591","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 : 2024-06-29DOI: 10.1016/j.rser.2024.114687
Min Yan, Yuanyuan Shen, Shuai Wang, Zhaoyou Zhu, Peizhe Cui, Yinglong Wang
Dimethyl carbonate, a pivotal organic solvent, has experienced significant growth in consumption and an expansion of production capacity in China in recent years. The primary industrial production methods, including transesterification, carbonylation, and urea alcoholysis, are accompanied by dedicated production facilities. This study conducts a comparative assessment of these processes, scrutinizing their technical merits and associated challenges to provide strategic guidance for dimethyl carbonate production within the nation. The review provides a comprehensive summary of dimethyl carbonate synthesis methods. Focusing on the separation of azeotropes during dimethyl carbonate synthesis via transesterification, it suggests the potential integration of conventional energy-saving technology with pervaporation separation to separate dimethyl carbonate and methanol. The review culminates in a concise summary and analysis of forthcoming prospects and obstacles inherent to this hybrid strategy. Realizing the effective integration of pervaporation technology with established energy-saving techniques for the efficient and ecologically sustainable separation necessitates further exploration and practical implementation.
{"title":"Green separation of azeotropes in dimethyl carbonate synthesis by transesterification","authors":"Min Yan, Yuanyuan Shen, Shuai Wang, Zhaoyou Zhu, Peizhe Cui, Yinglong Wang","doi":"10.1016/j.rser.2024.114687","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114687","url":null,"abstract":"<div><p>Dimethyl carbonate, a pivotal organic solvent, has experienced significant growth in consumption and an expansion of production capacity in China in recent years. The primary industrial production methods, including transesterification, carbonylation, and urea alcoholysis, are accompanied by dedicated production facilities. This study conducts a comparative assessment of these processes, scrutinizing their technical merits and associated challenges to provide strategic guidance for dimethyl carbonate production within the nation. The review provides a comprehensive summary of dimethyl carbonate synthesis methods. Focusing on the separation of azeotropes during dimethyl carbonate synthesis via transesterification, it suggests the potential integration of conventional energy-saving technology with pervaporation separation to separate dimethyl carbonate and methanol. The review culminates in a concise summary and analysis of forthcoming prospects and obstacles inherent to this hybrid strategy. Realizing the effective integration of pervaporation technology with established energy-saving techniques for the efficient and ecologically sustainable separation necessitates further exploration and practical implementation.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478681","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}
Design of metal hydride-based hydrogen storage reactors is often performed using numerical/experimental modelling which is computationally/economically difficult. This paper investigates the applicability of Response Surface Methodology (RSM) coupled Local/Global Sensitivity Analysis (L/GSA) to investigate – i) the applicability of advanced RSMs in predicting the responses for storage systems efficiently, ii) the applicability of advanced RSMs to perform L/GSA to identify the sensitive input design parameters based on their effect on the Outputs of Interests (OIs), i.e., reaction fraction (i.e., ) and bed temperature (i.e., ), and iii) the dependence of importance ranking of design parameters on the employed L/GSA methodology. The study is conducted in two stages. In the first stage, the most accurate RSM was identified among fourteen traditional and advanced RSMs, i.e., radial basis, kriging, quadratic, moving least square, support vector machine etc., employing a measure of precision, i.e., Nash–Sutcliffe Efficiency (NSE). RSMs were constructed based on the values of OIs estimated using finite element simulation using COMSOL software for random realizations of inputs generated via Latin Hypercube Sampling (LHS). In the second stage, the importance ranking of design parameters was estimated for both OIs using six different L/GSAs based on the input-output relationships estimated in stage one. All the codes of RSMs and L/GSAs were written and validated in MATLAB. Finite element simulations of the random realizations were performed using COMSOL software. For the present study, NSEs of the considered RSMs were ranging between 0.6262-0.8544 and 0.4652–0.8081 for and respectively, indicating the importance of selection of appropriate RSM. RBF-augmented Compact-I and kriging were the most accurate RSMs with NSEs approximately 10%–20 % higher to those of frequently used polynomial RSM. Time () and mass of hydrogen to be stored () were the most; and external temperature () and porosity () were the least sensitive inputs corresponding to and , with differences of 80–90 % in the sensitivity indices respectively. The ranking prediction was highly dependent upon the employed L/GSA methodology, with Morris's screening observed to be the least accurate. The RSM methods described in this study help to design and investigate the metal hydride reactors for various a
{"title":"Hydrogen storage systems performance and design parameters using response surface methods and sensitivity analysis","authors":"Saurabh Tiwari , Akshay Kumar , Nandlal Gupta , Gaurav Tiwari , Pratibha Sharma","doi":"10.1016/j.rser.2024.114628","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114628","url":null,"abstract":"<div><h3>Design</h3><p>Design of metal hydride-based hydrogen storage reactors is often performed using numerical/experimental modelling which is computationally/economically difficult. This paper investigates the applicability of Response Surface Methodology (RSM) coupled Local/Global Sensitivity Analysis (L/GSA) to investigate – i) the applicability of advanced RSMs in predicting the responses for storage systems efficiently, ii) the applicability of advanced RSMs to perform L/GSA to identify the sensitive input design parameters based on their effect on the Outputs of Interests (OIs), i.e., reaction fraction (i.e., <span><math><mrow><mi>C</mi></mrow></math></span>) and bed temperature (i.e., <span><math><mrow><mi>T</mi></mrow></math></span>), and iii) the dependence of importance ranking of design parameters on the employed L/GSA methodology. The study is conducted in two stages. In the first stage, the most accurate <span>RSM</span> was identified among fourteen traditional and advanced RSMs, i.e., radial basis, kriging, quadratic, moving least square, support vector machine etc., employing a measure of precision, i.e., Nash–Sutcliffe Efficiency (NSE). RSMs were constructed based on the values of OIs estimated using finite element simulation using COMSOL software for random realizations of inputs generated via Latin Hypercube Sampling (LHS). In the second stage, the importance ranking of design parameters was estimated for both OIs using six different L/GSAs based on the input-output relationships estimated in stage one. All the codes of RSMs and L/GSAs were written and validated in MATLAB. Finite element simulations of the random realizations were performed using COMSOL software. For the present study, NSEs of the considered RSMs were ranging between 0.6262-0.8544 and 0.4652–0.8081 for <span><math><mrow><mi>C</mi></mrow></math></span> and <span><math><mrow><mi>T</mi></mrow></math></span> respectively, indicating the importance of selection of appropriate RSM. RBF-augmented Compact-I and kriging were the most accurate RSMs with NSEs approximately 10%–20 % higher to those of frequently used polynomial RSM. Time (<span><math><mrow><mi>t</mi></mrow></math></span>) and mass of hydrogen to be stored (<span><math><mrow><msub><mi>M</mi><mi>H</mi></msub></mrow></math></span>) were the most; and external temperature (<span><math><mrow><msub><mi>T</mi><mrow><mi>e</mi><mi>x</mi><mi>t</mi></mrow></msub></mrow></math></span>) and porosity (<span><math><mrow><mi>E</mi></mrow></math></span>) were the least sensitive inputs corresponding to <span><math><mrow><mi>C</mi></mrow></math></span> and <span><math><mrow><mi>T</mi></mrow></math></span>, with differences of 80–90 % in the sensitivity indices respectively. The ranking prediction was highly dependent upon the employed L/GSA methodology, with Morris's screening observed to be the least accurate. The RSM methods described in this study help to design and investigate the metal hydride reactors for various a","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480405","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 : 2024-06-29DOI: 10.1016/j.rser.2024.114697
Ana T. Lima , Gunvor M. Kirkelund , Zheng Lu , Ruichang Mao , Wolfgang Kunther , Carsten Rode , Simon Slabik , Annette Hafner , Husam Sameer , Hans H. Dürr , Martina Flörke , Benjamin H. Lowe , Davide Aloini , Pierluigi Zerbino , Sofia G. Simoes
Circular economy (CE) practices pave the way for the construction sector to become less material- and carbon-intensive. However, for CE quantification by climate mitigation models, one must first identify the CE practices along a product (or material) value chain. In this review, CE practices are mapped for the value chain of 6 construction materials to understand how these practices influence and can be considered in climate mitigation modelling. The main sub-categories of steel, cement, glass, clay-brick, insulation materials, and wood were used to identify which Rs are currently addressed at the lab and industrial scales: refuse, reduce, rethink, repair, reuse, remanufacture, refurbish, repurpose, recycle, and recover. The CE practices were reviewed using scientific repositories and grey literature, validated by European-wide stakeholders, and mapped across the life-cycle stages of the six materials – extraction, manufacturing, use, and end-of-life (EoL). The mapping was limited to the manufacturing and EoL stages because materials could be identified at these stages (the extraction phase pertains to resources, and the use phase to a product, for example, buildings). All reviewed CE practices identified at the industrial scale were quantified at the European level. For example, EoL reinforcement steel is 1–11 % reused and 70–95 % recycled; manufacturing CEM I is up to 60 % reduced; remanufacturing flat glass is 26 % remanufactured while less than 5 % EoL flat glass is recycled. A major barrier to closed-loop recycling is the need for sorting and separation technologies. Open-loop recycling synergies are found at the industrial scale between, for example, flat glass and glass wool value chains. Climate mitigation models are proposed to be augmented to include these practices requiring an explicit link between building use and the other construction materials' value chain stages.
循环经济(CE)实践为建筑行业降低材料和碳密集度铺平了道路。然而,要通过气候减缓模型对循环经济进行量化,首先必须确定产品(或材料)价值链上的循环经济实践。在本综述中,我们对 6 种建筑材料价值链上的碳排放权实践进行了映射,以了解这些实践如何影响气候减缓模型,以及如何在气候减缓模型中加以考虑。通过钢材、水泥、玻璃、粘土砖、绝缘材料和木材这几个主要子类别,确定了目前在实验室和工业规模上所采取的应对措施:拒绝、减少、反思、修理、再利用、再制造、翻新、再利用、再循环和回收。利用科学资料库和灰色文献对 CE 实践进行了审查,由全欧洲的利益相关者进行了验证,并在六种材料的生命周期各阶段--提取、制造、使用和报废(EoL)--进行了映射。绘制仅限于制造阶段和生命周期终结阶段,因为可以在这些阶段确定材料(提取阶段涉及资源,使用阶段涉及产品,例如建筑物)。所有经审查确定的工业规模的 CE 实践都在欧洲层面进行了量化。例如,EoL 钢筋的再利用率为 1-11%,再循环率为 70-95%;CEM I 的生产量最多可减少 60%;平板玻璃的再制造率为 26%,而 EoL 平板玻璃的再循环率不到 5%。闭环回收的一个主要障碍是需要分类和分离技术。在平板玻璃和玻璃棉价值链等工业规模上,可以发现开环回收的协同作用。建议对气候减缓模型进行扩充,以纳入这些需要在建筑使用和其他建筑材料价值链阶段之间建立明确联系的做法。
{"title":"Mapping circular economy practices for steel, cement, glass, brick, insulation, and wood – A review for climate mitigation modeling","authors":"Ana T. Lima , Gunvor M. Kirkelund , Zheng Lu , Ruichang Mao , Wolfgang Kunther , Carsten Rode , Simon Slabik , Annette Hafner , Husam Sameer , Hans H. Dürr , Martina Flörke , Benjamin H. Lowe , Davide Aloini , Pierluigi Zerbino , Sofia G. Simoes","doi":"10.1016/j.rser.2024.114697","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114697","url":null,"abstract":"<div><p>Circular economy (CE) practices pave the way for the construction sector to become less material- and carbon-intensive. However, for CE quantification by climate mitigation models, one must first identify the CE practices along a product (or material) value chain. In this review, CE practices are mapped for the value chain of 6 construction materials to understand how these practices influence and can be considered in climate mitigation modelling. The main sub-categories of steel, cement, glass, clay-brick, insulation materials, and wood were used to identify which Rs are currently addressed at the lab and industrial scales: refuse, reduce, rethink, repair, reuse, remanufacture, refurbish, repurpose, recycle, and recover. The CE practices were reviewed using scientific repositories and grey literature, validated by European-wide stakeholders, and mapped across the life-cycle stages of the six materials – extraction, manufacturing, use, and end-of-life (EoL). The mapping was limited to the manufacturing and EoL stages because materials could be identified at these stages (the extraction phase pertains to resources, and the use phase to a product, for example, buildings). All reviewed CE practices identified at the industrial scale were quantified at the European level. For example, EoL reinforcement steel is 1–11 % reused and 70–95 % recycled; manufacturing CEM I is up to 60 % reduced; remanufacturing flat glass is 26 % remanufactured while less than 5 % EoL flat glass is recycled. A major barrier to closed-loop recycling is the need for sorting and separation technologies. Open-loop recycling synergies are found at the industrial scale between, for example, flat glass and glass wool value chains. Climate mitigation models are proposed to be augmented to include these practices requiring an explicit link between building use and the other construction materials' value chain stages.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1364032124004234/pdfft?md5=92990d4efd30af84e891cd16887730b2&pid=1-s2.0-S1364032124004234-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-29DOI: 10.1016/j.rser.2024.114702
Junjun Wu , Hong Wang , Xun Zhu , Qiang Liao
It remains a longstanding challenge to recover the waste heat from molten slags in pursuit of lower energy and carbon intensity in the metallurgical industry. To tap the heat from molten slag, the enabling technology i.e. centrifugal-granulation-assisted thermal energy recovery (CGATER) has been proposed and evolved from the laboratory concept into technological embodiment. Further development and deployment of CGATER necessitate a thorough, informative understanding of the multiscale CGATER physics; this is often enabled by modelling. Yet, the availability of informative CGATER physics is very limited due to the insufficiency and complexity of CGATER models. It is thus nontrivial to understand the current CGATER models and most importantly, the challenges and opportunities in future CGATER development. Herein, we first introduce the fundamental physics of CGATER. Second, we provide an overview of the CGATER models in the recent decade. Finally, we further analyze the missing pieces in current CGATER models and suggest future development of the CGATER models. According to the authors’ opinion, revisiting current CGATER models is essential. In the future, joint efforts from academia and industry are advocated to develop multiscale, multiphase CGATER models which are expected to accelerate the large-scale implementation of CGATER in the metallurgical industry.
{"title":"Modelling centrifugal-granulation-assisted thermal energy recovery from molten slag at high temperatures","authors":"Junjun Wu , Hong Wang , Xun Zhu , Qiang Liao","doi":"10.1016/j.rser.2024.114702","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114702","url":null,"abstract":"<div><p>It remains a longstanding challenge to recover the waste heat from molten slags in pursuit of lower energy and carbon intensity in the metallurgical industry. To tap the heat from molten slag, the enabling technology i.e. centrifugal-granulation-assisted thermal energy recovery (CGATER) has been proposed and evolved from the laboratory concept into technological embodiment. Further development and deployment of CGATER necessitate a thorough, informative understanding of the multiscale CGATER physics; this is often enabled by modelling. Yet, the availability of informative CGATER physics is very limited due to the insufficiency and complexity of CGATER models. It is thus nontrivial to understand the current CGATER models and most importantly, the challenges and opportunities in future CGATER development. Herein, we first introduce the fundamental physics of CGATER. Second, we provide an overview of the CGATER models in the recent decade. Finally, we further analyze the missing pieces in current CGATER models and suggest future development of the CGATER models. According to the authors’ opinion, revisiting current CGATER models is essential. In the future, joint efforts from academia and industry are advocated to develop multiscale, multiphase CGATER models which are expected to accelerate the large-scale implementation of CGATER in the metallurgical industry.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478682","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 : 2024-06-28DOI: 10.1016/j.rser.2024.114696
Xutao Wang , Xinxu Zhao , Yang Yang , Yuhao Shao , Li Zhang , Yu Ni , Jun Pan , Yongxin Zhang , Chenghang Zheng , Xiang Gao
Carbon dioxide (CO2) reduction technologies (CRTs) in the coal-fired power sector play an imperative role in the mitigation of environmental challenges and reducing CO2 emissions to help achieve the 2 °C target. However, a compelling necessity persists for a unified framework that can effectively and accurately estimate the costs and potentials associated with CRTs, arising from the diversity of technologies and unit types. Therefore, this study employs a bottom-up approach to analyze the costs and potential of 25 advanced CRTs in the coal-fired power sector, excluding CO2 capture, utilization and storage (CCUS), across 19 types of coal-fired power units. This analysis amalgamates the CO2 reduction supply curve (CRSC) approach with levelized cost of CO2 reduction (LCOC) and a broken-even analysis which could reflect the sector's average carbon reduction cost. The outcomes reveal the following key insights: (1) These technologies collectively harbor a substantial CO2 conservation potential amounting to 925.61 Mt CO2, with a broken-even price of CNY 410.1/tCO2. This reduction could potentially lower 20%–25 % of CO2 emissions in China's power system in 2022, highlighting the crucial role of CRTs in achieving a low-carbon transition and national climate targets; (2)Steam turbine flow path retrofit (T8) not only offers a relatively high CO2 reduction potential (>60 Mt CO2), but also features a low cost (<CNY 150/tCO2) and high profit (>CNY 0.85/MWh). Prioritizing the development of this technology can significantly accelerate the low-carbon transition of coal power; (3) Carbon price have a paramount influence on the cost-effectiveness of CRTs and driving their adoption.
{"title":"Comprehensive analysis of carbon emission reduction technologies (CRTs) in China's coal-fired power sector: A bottom-up approach","authors":"Xutao Wang , Xinxu Zhao , Yang Yang , Yuhao Shao , Li Zhang , Yu Ni , Jun Pan , Yongxin Zhang , Chenghang Zheng , Xiang Gao","doi":"10.1016/j.rser.2024.114696","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114696","url":null,"abstract":"<div><p>Carbon dioxide (CO<sub>2</sub>) reduction technologies (CRTs) in the coal-fired power sector play an imperative role in the mitigation of environmental challenges and reducing CO<sub>2</sub> emissions to help achieve the 2 °C target. However, a compelling necessity persists for a unified framework that can effectively and accurately estimate the costs and potentials associated with CRTs, arising from the diversity of technologies and unit types. Therefore, this study employs a bottom-up approach to analyze the costs and potential of 25 advanced CRTs in the coal-fired power sector, excluding CO<sub>2</sub> capture, utilization and storage (CCUS), across 19 types of coal-fired power units. This analysis amalgamates the CO<sub>2</sub> reduction supply curve (CRSC) approach with levelized cost of CO<sub>2</sub> reduction (LCOC) and a broken-even analysis which could reflect the sector's average carbon reduction cost. The outcomes reveal the following key insights: (1) These technologies collectively harbor a substantial CO<sub>2</sub> conservation potential amounting to 925.61 Mt CO<sub>2</sub>, with a broken-even price of CNY 410.1/tCO<sub>2</sub>. This reduction could potentially lower 20%–25 % of CO<sub>2</sub> emissions in China's power system in 2022, highlighting the crucial role of CRTs in achieving a low-carbon transition and national climate targets; (2)Steam turbine flow path retrofit (T8) not only offers a relatively high CO<sub>2</sub> reduction potential (>60 Mt CO<sub>2</sub>), but also features a low cost (<CNY 150/tCO<sub>2</sub>) and high profit (>CNY 0.85/MWh). Prioritizing the development of this technology can significantly accelerate the low-carbon transition of coal power; (3) Carbon price have a paramount influence on the cost-effectiveness of CRTs and driving their adoption.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480537","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 : 2024-06-28DOI: 10.1016/j.rser.2024.114685
Grzegorz Maślak , Przemysław Orłowski
Demand-shaping mechanisms are a key component of modern energy management systems, although not unproblematic. The degree of social acceptance of interference with demand or generation and the ease of integration of various types of non-critical loads depends on the method of their implementation. In addition, the critical load pool typically includes devices with different response times. The energy management systems currently in use often cannot meet user expectations. Especially when considering other vital aspects, such as energy market spread, storage wear, or connection to the utility grid and neighbouring microgrids. The authors adopted an approach of unifying demand side management and response in the form of virtual energy storage. Said store allows for the accommodation of loads operating under differing scheduling horizons. Such a new concept allows management not only in terms of quantity but also in terms of time. The storage is the focal point of a comprehensive energy management system based on switched model predictive control. The receding horizon algorithm relies on a non-stationary hybrid microgrid model. The study compares the operating costs of microgrids with virtual storage, allowing only demand postponement, preponement or bidirectional operation. The energy management system is also examined for sensitivity to changes in the weight matrices of the cost function, horizon length and forecast inaccuracy. Introducing virtual energy storage reduces microgrid operating costs by up to 16%. The decrease in control performance is proportional to the prediction accuracy, and the sensitivity allows for customisation.
{"title":"Operational optimisation of a microgrid using non-stationary hybrid switched model predictive control with virtual storage-based demand management","authors":"Grzegorz Maślak , Przemysław Orłowski","doi":"10.1016/j.rser.2024.114685","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114685","url":null,"abstract":"<div><p>Demand-shaping mechanisms are a key component of modern energy management systems, although not unproblematic. The degree of social acceptance of interference with demand or generation and the ease of integration of various types of non-critical loads depends on the method of their implementation. In addition, the critical load pool typically includes devices with different response times. The energy management systems currently in use often cannot meet user expectations. Especially when considering other vital aspects, such as energy market spread, storage wear, or connection to the utility grid and neighbouring microgrids. The authors adopted an approach of unifying demand side management and response in the form of virtual energy storage. Said store allows for the accommodation of loads operating under differing scheduling horizons. Such a new concept allows management not only in terms of quantity but also in terms of time. The storage is the focal point of a comprehensive energy management system based on switched model predictive control. The receding horizon algorithm relies on a non-stationary hybrid microgrid model. The study compares the operating costs of microgrids with virtual storage, allowing only demand postponement, preponement or bidirectional operation. The energy management system is also examined for sensitivity to changes in the weight matrices of the cost function, horizon length and forecast inaccuracy. Introducing virtual energy storage reduces microgrid operating costs by up to 16%. The decrease in control performance is proportional to the prediction accuracy, and the sensitivity allows for customisation.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480536","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 : 2024-06-28DOI: 10.1016/j.rser.2024.114705
Sidique Gawusu
This study investigates the complex origins of energy poverty, focusing on economic, technological, and infrastructural aspects through the analysis of peer-reviewed articles using Latent Dirichlet Allocation (LDA). By identifying key themes such as “energy scarcity,” “energy accessibility,” and “sustainable energy,” the study emphasizes the urgent need for sustainable and accessible energy solutions. It highlights the shift towards community-led renewable energy initiatives as a critical strategy to achieve climate goals and support a low-carbon future. The research addresses the socio-economic impacts of energy poverty on household income and development, particularly in developing countries. It explores the challenges associated with solar energy in rural electrification and the dynamics of rural energy use and policy. The findings emphasize the importance of region-specific strategies and policies that address the unique challenges faced by rural communities. By advocating for equitable energy distribution and the adoption of renewable resources, the study provides a comprehensive understanding of the critical issues at play. This investigation offers valuable insights for policymakers aiming to combat energy poverty and promote environmental sustainability. It contributes to a deeper understanding of how targeted strategies can alleviate energy poverty and foster sustainable development, supporting efforts towards achieving net-zero emissions and the United Nations Sustainable Development Goals. The study highlights the potential for community-driven initiatives to significantly impact the global energy landscape by presenting perspectives on energy policy and technology rollouts.
{"title":"Evolving energy landscapes: A computational analysis of the determinants of energy poverty","authors":"Sidique Gawusu","doi":"10.1016/j.rser.2024.114705","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114705","url":null,"abstract":"<div><p>This study investigates the complex origins of energy poverty, focusing on economic, technological, and infrastructural aspects through the analysis of peer-reviewed articles using Latent Dirichlet Allocation (LDA). By identifying key themes such as “energy scarcity,” “energy accessibility,” and “sustainable energy,” the study emphasizes the urgent need for sustainable and accessible energy solutions. It highlights the shift towards community-led renewable energy initiatives as a critical strategy to achieve climate goals and support a low-carbon future. The research addresses the socio-economic impacts of energy poverty on household income and development, particularly in developing countries. It explores the challenges associated with solar energy in rural electrification and the dynamics of rural energy use and policy. The findings emphasize the importance of region-specific strategies and policies that address the unique challenges faced by rural communities. By advocating for equitable energy distribution and the adoption of renewable resources, the study provides a comprehensive understanding of the critical issues at play. This investigation offers valuable insights for policymakers aiming to combat energy poverty and promote environmental sustainability. It contributes to a deeper understanding of how targeted strategies can alleviate energy poverty and foster sustainable development, supporting efforts towards achieving net-zero emissions and the <span>United Nations</span> Sustainable Development Goals. The study highlights the potential for community-driven initiatives to significantly impact the global energy landscape by presenting perspectives on energy policy and technology rollouts.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480538","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 : 2024-06-28DOI: 10.1016/j.rser.2024.114704
Zanyun Ying , Qianlinglin Qiu , Jiexu Ye , Han Chen , Jingkai Zhao , Yao Shen , Bei Chu , Hanmin Gao , Shihan Zhang
Microbial electrosynthesis (MES), a neoteric technology, has attracted much interest in recent ten years. This work conducts network analyses in the CO2 bio-reduction based on MES to reveal critical information and guidance on the reports published, the topical changes involved, and the areas deserving extra attention. The research progress can be divided into three stages with themes of exploring electron transfer mechanisms, enhancing MES performance, and improving MES economic feasibility, respectively. Sufficient understanding of extracellular electron transfer is the basis for enhancements of productivity and selectivity towards CO2 bioelectrosynthesis, and more tools are combined to explore the kinetics of electron transfer and expression of functional genes. The promotion of MES performance can be achieved by not only improving the configurations and structures of MES reactor itself but also integrating it with other units. Efficient strategies, like electrode modification, electron donor addition, CO2 supply mode shift, and imposed potential regulation, are demonstrated to boost the production of longer carbon chain carboxylates and corresponding alcohols. In the perspective of economic development and environmental sustainability, renewable surplus energy to bioelectrochemically converse the CO2 captured using negative emission technology is recommended for reducing carbon emissions. Moreover, specific aspects related to the mechanism, performance and application that are worthy of coverage in future researches are also elucidated. This review aims to provide references for researchers dedicated to effective CO2 abatement via MES.
近十年来,微生物电合成(MES)这一新兴技术备受关注。本研究对基于微生物电合成技术的二氧化碳生物还原进行了网络分析,以揭示已发表的报告、涉及的热点变化以及值得格外关注的领域等方面的重要信息和指导意义。研究进展可分为三个阶段,分别以探索电子传递机制、提高 MES 性能和改善 MES 经济可行性为主题。对细胞外电子传递的充分理解是提高二氧化碳生物电合成的生产率和选择性的基础,更多的工具将用于探索电子传递动力学和功能基因的表达。要提高 MES 的性能,不仅要改进 MES 反应器本身的配置和结构,还要将其与其他装置整合在一起。研究证明了电极改性、电子供体添加、二氧化碳供应模式转变和外加电位调节等有效策略可促进长碳链羧酸盐和相应醇类的生产。从经济发展和环境可持续发展的角度来看,建议使用负排放技术将可再生剩余能源转化为生物电化学捕获的二氧化碳,以减少碳排放。此外,还阐明了与机理、性能和应用有关的、值得在未来研究中涉及的具体方面。本综述旨在为致力于通过 MES 有效减排二氧化碳的研究人员提供参考。
{"title":"Mechanism, performance enhancement, and economic feasibility of CO2 microbial electrosynthesis systems: A data-driven analysis of research topics and trends","authors":"Zanyun Ying , Qianlinglin Qiu , Jiexu Ye , Han Chen , Jingkai Zhao , Yao Shen , Bei Chu , Hanmin Gao , Shihan Zhang","doi":"10.1016/j.rser.2024.114704","DOIUrl":"https://doi.org/10.1016/j.rser.2024.114704","url":null,"abstract":"<div><p>Microbial electrosynthesis (MES), a neoteric technology, has attracted much interest in recent ten years. This work conducts network analyses in the CO<sub>2</sub> bio-reduction based on MES to reveal critical information and guidance on the reports published, the topical changes involved, and the areas deserving extra attention. The research progress can be divided into three stages with themes of exploring electron transfer mechanisms, enhancing MES performance, and improving MES economic feasibility, respectively. Sufficient understanding of extracellular electron transfer is the basis for enhancements of productivity and selectivity towards CO<sub>2</sub> bioelectrosynthesis, and more tools are combined to explore the kinetics of electron transfer and expression of functional genes. The promotion of MES performance can be achieved by not only improving the configurations and structures of MES reactor itself but also integrating it with other units. Efficient strategies, like electrode modification, electron donor addition, CO<sub>2</sub> supply mode shift, and imposed potential regulation, are demonstrated to boost the production of longer carbon chain carboxylates and corresponding alcohols. In the perspective of economic development and environmental sustainability, renewable surplus energy to bioelectrochemically converse the CO<sub>2</sub> captured using negative emission technology is recommended for reducing carbon emissions. Moreover, specific aspects related to the mechanism, performance and application that are worthy of coverage in future researches are also elucidated. This review aims to provide references for researchers dedicated to effective CO<sub>2</sub> abatement via MES.</p></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":null,"pages":null},"PeriodicalIF":16.3,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141478589","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}