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Renewable energy consumption and carbon emissions in developing countries: the role of capital markets 发展中国家的可再生能源消费和碳排放:资本市场的作用
Q4 ENERGY & FUELS Pub Date : 2023-11-02 DOI: 10.1080/14786451.2023.2268857
Daniel Ofori-Sasu, Joshua Yindenaba Abor, George Nana Agyekum Donkor, Isaac Otchere
This study examines the impact of capital market on the relationship between energy consumption and carbon emissions. By employing a system Generalised Methods of Moments (GMM) for a sample of 138 developing countries over the period, 1990–2020, we find a U-shaped reverse relationship between renewable energy consumption and carbon emissions. The study reveals that beyond a threshold of 71.03, renewable energy consumption tends to increase carbon emissions. Similarly, the initial levels of carbon emissions reduce the use of renewable energy but beyond a 2.5 level of carbon emissions, renewable energy consumption begins to increase. We find that both the stock market and bond market reduce carbon emissions and enhance the levels of renewable energy consumption. We provide evidence to support that the capital market enhances the negative impact of renewable energy consumption on carbon emissions, while the corporate bond market magnifies the reductive effect of carbon emissions on renewable energy consumption.
本研究考察了资本市场对能源消费与碳排放关系的影响。通过对138个发展中国家1990-2020年的样本采用系统广义矩量方法(GMM),我们发现可再生能源消费与碳排放之间呈u型反向关系。研究表明,超过71.03的阈值,可再生能源消费倾向于增加碳排放。同样,碳排放的初始水平减少了可再生能源的使用,但超过2.5的碳排放水平,可再生能源的消费开始增加。研究发现,股票市场和债券市场均能降低碳排放,提高可再生能源消费水平。资本市场增强了可再生能源消费对碳排放的负向影响,而公司债券市场放大了碳排放对可再生能源消费的负向影响。
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引用次数: 0
The impact of a kinetic façade on the lighting performance and energy efficiency of a public building: the case of Dubai frame 动态立面对公共建筑照明性能和能源效率的影响:迪拜框架的案例
Q4 ENERGY & FUELS Pub Date : 2023-10-06 DOI: 10.1080/14786451.2023.2248514
Areen Alawaysheh, Hanan Taleb, Mays Kayed
This paper proposes a novel framework for selecting a kinetic system strategy to enhance the performance of the building while preserving its architectural concepts. Dubai Frame, which is one of the most iconic buildings in Dubai, was chosen to act as a case study. A parametric model was developed for adjusting the opening ratios of the panel’s solid parts in the façade geometrics using the Grasshopper plugin in Rhino. Integrated Environmental Solutions (IES) simulation software was used and validated by calibration of the actual monthly electricity bills and real measurement of lux value against the predicted readings. The simulation assessed the total energy savings in terms of electricity and cooling loads and cost savings in terms of the KW per hour of electricity generated. In addition, it examined daylight illuminance levels for nine scenarios of the proposed kinetic system. The research has revealed several important results that include the finding that the optimal kinetic system results in 20% energy savings and 31% reduction in daylight illuminance levels while taking into account the current situation of the building and its aesthetic values.
本文提出了一个新的框架来选择动力系统策略,以提高建筑的性能,同时保留其建筑概念。迪拜框架是迪拜最具标志性的建筑之一,它被选为案例研究。使用Rhino中的Grasshopper插件,开发了一个参数化模型,用于调整面板实体部分在farade几何中的开口比率。使用集成环境解决方案(IES)模拟软件,并通过校准实际每月电费账单和实际测量勒克斯值与预测读数进行验证。模拟评估了以电力和冷却负荷计算的总能源节约,以及以每小时发电千瓦计算的成本节约。此外,它还检查了提出的动力学系统的九个场景的日光照度水平。研究揭示了几个重要的结果,包括发现最优的动力系统可以节省20%的能源,减少31%的日光照度,同时考虑到建筑的现状和美学价值。
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引用次数: 0
On the design of a solar heat storage tank at 120°C 对120°C太阳能蓄热槽的设计进行了研究
Q4 ENERGY & FUELS Pub Date : 2023-09-27 DOI: 10.1080/14786451.2023.2246080
R. Christodoulaki, I. S. Akmandor, O. Bayer, U. Desideri, L. Ferrari, G. F. Frate, V. Drosou
This work presents the materials selection process, the design and the dimensioning process of a latent heat storage tank that works between a high temperature heat pump and an Organic Rankine Cycle unit. The selected heat storage material is the S117 Phase Change Material that has a melting point at 117°C matches the operational temperature of the system at approximately 120°C. The tank configuration is selected for optimised heat transfer process, resulted from practical experience of the project partners and it is described in details in the document. The simulation results from the Computational Fluid Dynamic study of the tank are also presented here. This work should be useful for engineers designing compact heat storage tanks for medium temperature applications.
本文介绍了一种介于高温热泵和有机朗肯循环装置之间的潜热储水箱的材料选择过程、设计和尺寸确定过程。所选择的储热材料是熔点为117°C的S117相变材料,与系统的工作温度约为120°C相匹配。根据项目合作伙伴的实际经验,选择了优化传热过程的水箱配置,并在文档中进行了详细描述。本文还介绍了该储罐计算流体动力学研究的仿真结果。这项工作对设计中温应用的紧凑型储热罐的工程师应该是有用的。
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引用次数: 0
Development of PV hosting-capacity prediction method based on Markov Chain for high PV penetration with utility-scale battery storage on low-voltage grid 基于马尔可夫链的低压电网高渗透率光伏发电容量预测方法研究
Q4 ENERGY & FUELS Pub Date : 2023-09-27 DOI: 10.1080/14786451.2023.2261759
Wijaya Yudha Atmaja, None Sarjiya, Lesnanto Multa Putranto
The previous stochastic hosting capacity prediction method using the Monte Carlo method for high photovoltaic (PV) penetration with a battery energy storage system (BESS) required a large number of computations to achieve the expected accuracy. The problem of high computational load must be addressed so that the electrical distribution planner can practically use the PV hosting capacity prediction in actual situations. Therefore, this study developed a Markov-chain-based PV hosting capacity prediction method for high PV penetration using BESS. The proposed method is described in detail, followed by case and validation studies. The obtained hosting capacity was 123.58 kW, which increased to 3676.4 kW after the utility-scale BESS implementation. The results demonstrate that the proposed Markov-chain-based PV hosting capacity prediction method outperforms the Monte Carlo method, which is the most popular stochastic hosting capacity method, in terms of accuracy and computational cost.
以往基于蒙特卡罗方法的高光伏渗透率电池储能系统随机承载容量预测方法需要大量的计算才能达到预期的精度。为了使配电规划人员能够在实际情况中实际使用光伏主机容量预测,必须解决计算负荷大的问题。因此,本研究基于BESS开发了一种基于马尔可夫链的高光伏渗透率光伏托管容量预测方法。详细介绍了该方法,然后进行了案例和验证研究。获得的托管容量为123.58千瓦,在公用事业规模的BESS实施后增加到3676.4千瓦。结果表明,本文提出的基于马尔可夫链的光伏装机容量预测方法在精度和计算成本方面都优于蒙特卡罗方法。蒙特卡罗方法是目前最流行的随机装机容量预测方法。
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引用次数: 0
Powering large industrial facilities – using wind- or nuclear power? 为大型工业设施供电——使用风能还是核能?
Q4 ENERGY & FUELS Pub Date : 2023-09-26 DOI: 10.1080/14786451.2023.2260008
Jan Emblemsvåg
Many industrial facilities require large amount of power available through fossil energy, but in some countries the power is secured by hydroelectric power. Norway is one such country, but some facilities still use gas power due to hydroelectric power capacity limitations. Therefore, using wind- or nuclear power to cut emissions are relevant alternatives. Therefore, a concept and feasibility study using wind- or nuclear power at the single largest emitter of climate gases in Norway, Melkøya LNG (Liquified Natural Gas) terminal is presented. Due to the intermittency of the wind power, the balancing/back-up power must also be included. After running 10,000 trials in a Monte Carlo simulation to handle the uncertainties of the alternatives, the results support the Nuclear alternative. Future key issues are the cost escalations of wind turbines, the cost of balancing- and backup power for the Wind alternative and the waste handling for the Nuclear alternative.
许多工业设施需要通过化石能源获得大量电力,但在一些国家,电力是通过水力发电获得的。挪威就是这样一个国家,但由于水力发电能力的限制,一些设施仍然使用天然气发电。因此,使用风能或核能来减少排放是相关的替代方案。因此,本文提出了在挪威最大的气候气体排放源Melkøya液化天然气接收站使用风能或核能的概念和可行性研究。由于风力发电的间歇性,平衡/备用电源也必须包括在内。在蒙特卡罗模拟中运行10,000次试验以处理替代方案的不确定性后,结果支持核替代方案。未来的关键问题是风力涡轮机的成本上升、风能替代方案的平衡和备用电力成本以及核能替代方案的废物处理成本。
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引用次数: 0
The solar rush: invisible land grabbing in East Germany 太阳热:东德无形的土地掠夺
Q4 ENERGY & FUELS Pub Date : 2023-09-26 DOI: 10.1080/14786451.2023.2260009
Katja Müller, Mareike Pampus
The article presents an ethnographic analysis of the planning and implementation of open-field photovoltaic (PV) plants on agricultural land in East Germany. Employing qualitative methods, the study delves into the multifaceted dynamics surrounding the expansion of Germany’s renewable energy sector, particularly in the considered 'energy state' of Brandenburg. Despite Germany’s commitment to renewable energy, the absence of a comprehensive legal framework governing conflicts over land use for solar energy installations poses significant challenges. Large-scale solar parks, designed for mass energy generation, often necessitate significant land acquisition, which sparks conflicts, particularly when the potential land serves agricultural purposes. The study underscores the shifting perception of land from socioecological wealth to a mere economic resource. The urgency of addressing ecological tipping points through energy transitions contrasts with the current scenario of unchecked investor and developer land acquisitions in pursuit of economic gains. This phenomenon, characterised as ‘invisible land-grabbing,’ has engendered a lack of trust in large-scale PV projects and potentially hampers solar PV approval processes. In conclusion, the article highlights the intricate interplay between energy transitions, land management, and socioecological well-being. It calls for a holistic approach to address the ethical, ecological, and economic implications of renewable energy expansion and land use.
本文介绍了一个民族志分析的规划和实施的开放领域光伏电站在农业用地在东德。采用定性方法,该研究深入研究了围绕德国可再生能源部门扩张的多方面动态,特别是在被认为是“能源之州”的勃兰登堡。尽管德国致力于发展可再生能源,但缺乏一个全面的法律框架来管理太阳能装置土地使用的冲突,这构成了重大挑战。为大规模发电而设计的大型太阳能园区往往需要大量征地,这引发了冲突,特别是当潜在的土地用于农业用途时。这项研究强调了人们对土地的看法正在从社会生态财富转变为单纯的经济资源。通过能源转型解决生态临界点的紧迫性,与目前投资者和开发商为追求经济利益而肆无忌惮地收购土地的情况形成了鲜明对比。这种现象被称为“无形的土地掠夺”,导致人们对大型光伏项目缺乏信任,并可能阻碍太阳能光伏项目的审批程序。总之,本文强调了能源转型、土地管理和社会生态福祉之间错综复杂的相互作用。它呼吁采取一种全面的方法来解决可再生能源扩张和土地利用对伦理、生态和经济的影响。
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引用次数: 0
Does inward remittance influence the choice of households’ cooking fuel? 汇入的汇款是否影响家庭烹饪燃料的选择?
Q4 ENERGY & FUELS Pub Date : 2023-09-21 DOI: 10.1080/14786451.2023.2258235
Samuel Osei-Gyebi
Among the Sustainable Development Goals is to ensure the consumption of clean and affordable energy by all by the close of 2030. Over the last decade, calls for energy transition from unclean energy to clean ones have intensified. Consequently, the price of clean energy has been subsidised in Ghana but this is not enough as energy transition still entails considerable costs for households. The receipt of inward remittance improves households’ income which can aid their transition but literature in this regard is scanty. Applying the Special Regression Method to household data from the Ghana Living Standards Survey, we examine how the receipt of income remittance influences the choice of households’ cooking fuels. We found an increase in income remittance increases the odds of households adopting clean cooking fuels. We recommend that the government of Ghana undertake policies that improve household income to encourage the adoption of clean fuels and reduce environmental pollution.
可持续发展目标之一是确保到2030年底所有人都能消费清洁和负担得起的能源。近十年来,从不清洁能源向清洁能源转型的呼声日益高涨。因此,加纳对清洁能源的价格进行了补贴,但这还不够,因为能源转型仍然需要家庭承担相当大的成本。收到汇入的汇款可以提高家庭收入,帮助他们过渡,但这方面的文献很少。运用特殊回归方法对加纳生活水平调查的家庭数据进行分析,我们考察了收入汇款的接收如何影响家庭烹饪燃料的选择。我们发现,收入汇款的增加增加了家庭采用清洁烹饪燃料的可能性。我们建议加纳政府采取提高家庭收入的政策,鼓励采用清洁燃料,减少环境污染。
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引用次数: 0
Economic analysis of cost-based load shifting implementation on large utility systems using battery energy storage system 基于成本的大型电力系统电池储能负荷转移实施的经济分析
Q4 ENERGY & FUELS Pub Date : 2023-09-21 DOI: 10.1080/14786451.2023.2248503
Agus Setiawan, Zainal Arifin, Fauzan Hanif Jufri, Budi Sudiarto, Iwa Garniwa, Rudy Setiabudy
Advances in energy storage technology have allowed the application of load shifting in the utility grid for a more efficient power system operation. However, the economy of the Battery Energy Storage System (BESS) application is not linear to the cost reduction obtained from excluding the costly generators. This paper presents the economic analysis of cost-based load shifting implementation and an approach to determine the generation units to be deactivated and replaced by BESS on three large-scale power grids in Indonesia: Sumbagut, Sumbagteng, and Sumbagsel systems. The economic feasibility is evaluated using the Net Present Value (NPV), considering the savings and the BESS investment cost. The result shows that the proposed approach is more robust than the conventional methods, such as removing the most expensive units, units with the highest cost reduction, units with the best economic return contribution, or the maximum number of units that can be replaced.
储能技术的进步使负荷转移在公用电网中的应用成为可能,从而提高电力系统的运行效率。然而,电池储能系统(BESS)应用的经济性与排除昂贵的发电机所获得的成本降低并不是线性的。本文介绍了基于成本的负荷转移实施的经济分析,以及确定在印度尼西亚的三个大型电网(Sumbagut, Sumbagteng和Sumbagsel系统)上停止运行并由BESS取代的发电机组的方法。经济可行性评估使用净现值(NPV),考虑节省和BESS投资成本。结果表明,该方法的鲁棒性优于传统方法,如去除最昂贵的机组、降低成本最大的机组、经济回报贡献最大的机组或可替换机组的最大数量。
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引用次数: 0
Green hydrogen potential assessment in Ghana: application of PEM electrolysis process and geospatial-multi-criteria approach 加纳绿色氢势评估:PEM电解工艺和地理空间多标准方法的应用
Q4 ENERGY & FUELS Pub Date : 2023-09-14 DOI: 10.1080/14786451.2023.2256892
Mary Asare-Addo
With green hydrogen gaining traction as a viable sustainable energy option, the present study explores the potential of producing green hydrogen from wind and solar energy in Ghana. The study combined the use of geospatial multi-criteria approach and PEM electrolysis process to estimate the geographical and technical potential of the selected two renewable resources. The study also included an assessment of potential areas for grid integration. Technology specifications of a monocrystalline solar PV module and 1 MW wind turbine module were applied. Results of the assessment show that about 85% of the total land area in the country is available for green hydrogen projects. Technically, capacities of ∼14,196.21 Mt of green hydrogen using solar and ∼10,123.36 Mt/year from wind energy can be produced annually in the country. It was also observed that some regions, especially regions in the northern part of the country even though showed the most favourable locations for solar-based green hydrogen projects with technical potential of over 1500 Mt/year, these regions may not qualify for a grid connected system based on the current electrification policy of the country due to the regions’ low population density and distance from the power grid network threshold.
随着绿色氢作为一种可行的可持续能源选择越来越受欢迎,本研究探索了加纳利用风能和太阳能生产绿色氢的潜力。该研究结合使用地理空间多标准方法和PEM电解过程来估计所选两种可再生资源的地理和技术潜力。该研究还包括对电网整合的潜在领域的评估。应用了单晶太阳能光伏组件和1mw风力涡轮机组件的技术规范。评估结果表明,该国约85%的土地面积可用于绿色氢项目。从技术上讲,该国每年可生产约14,196.21万吨太阳能绿色氢和约10,123.36万吨风能绿色氢。还观察到,一些地区,特别是该国北部地区,尽管显示出太阳能绿色氢项目的最有利位置,技术潜力超过1500万吨/年,但根据该国目前的电气化政策,由于该地区人口密度低,距离电网门槛很远,这些地区可能没有资格获得并网系统。
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引用次数: 0
Wicked facets of the German energy transition – examples from the electricity, heating, transport, and industry sectors 德国能源转型的邪恶方面——以电力、供暖、交通和工业部门为例
IF 3.1 Q4 ENERGY & FUELS Pub Date : 2023-09-08 DOI: 10.1080/14786451.2023.2244602
J. Biehl, Leonard Missbach, Franziska Riedel, Ruben Stemmle, Julian Jüchter, Jessica Weber, Johanna Kucknat, Adrian Odenweller, Christian Nauck, L. Lukassen, M. Zech, Marie Grimm
Wicked problems occur when decision-makers face constant change or unprecedented challenges and when uncertainty, complexity, and stakeholder divergence are high. We shed light on wicked problems in the German energy transition. Our methods consist of a multiplecase study and comparative multi-criteria analysis, utilising the wicked problems theoretical framework introduced by Horst Rittel and Melvin Webber (1973). Based on four exemplary cases, our research covers four core energy transition sectors: energy supply (developing onshore wind power), heating/cooling (using shallow geothermal energy systems), transport (decarbonising the transport sector), and industry (decarbonising the chemical industry sector). Cross-case results illustrate where and how the 10-point frame of wicked problems manifests in the German energy transition. We do not argue that the German energy transition is inherently wicked, yet we stress the need to consider potentially wicked facets of energy transition challenges. Our results show that the four cases exhibit more wicked tendencies in the governance domain than in the technical dimension. All cases exhibit wicked facets in the governance dimension, given strong normative assumptions, value divergence, and complex
当决策者面临不断的变化或前所未有的挑战时,当不确定性、复杂性和利益相关者分歧很高时,就会出现严重的问题。我们揭示了德国能源转型中的棘手问题。我们的方法包括多案例研究和比较多标准分析,利用霍斯特·里特尔和梅尔文·韦伯(1973)引入的邪恶问题理论框架。基于四个典型案例,我们的研究涵盖了四个核心能源转型部门:能源供应(开发陆上风力发电)、供暖/制冷(使用浅层地热能系统)、运输(使运输部门脱碳)和工业(使化学工业部门脱碳)。交叉案例的结果说明了10点问题框架在德国能源转型中的表现。我们并不认为德国的能源转型本质上是邪恶的,但我们强调有必要考虑能源转型挑战的潜在邪恶方面。我们的结果表明,这四个案例在治理领域中比在技术维度中表现出更多的邪恶倾向。所有案例都在治理维度中表现出邪恶的一面,给出了强有力的规范假设、价值分歧和复杂性
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引用次数: 2
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International Journal of Sustainable Energy
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