Pub Date : 2023-05-28DOI: 10.1177/0958305x231178908
{"title":"Retracted: “Economic regulation of energy costs when integrated into distribution networks of industrial enterprises”","authors":"","doi":"10.1177/0958305x231178908","DOIUrl":"https://doi.org/10.1177/0958305x231178908","url":null,"abstract":"","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135895535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.1177/0958305X231169271
Wen-Chen Chang, Xinjian Zhou, Raima Nazar
The current COVID-19 pandemic was a huge shock, influencing a wide range of socioeconomic measures, including the environment. The issue of how the uncertainty caused by pandemics will influence environmental quality is critical. This research examines the nonlinear relationship between pandemic uncertainty and environmental quality across leading polluted emerging economies (China, India, Russia, Indonesia, Brazil, Mexico, Iran, Saudi Arabia, South Africa, and Turkey). Using data ranging from 1996 to 2020, a distinctive approach, ‘Quantile-on-Quantile’, is used. Greenhouse gas emissions (GHG) are adopted as a proxy for environmental quality. The outcomes analyze how pandemic uncertainty's quantiles influence the quantiles of GHG asymmetrically, giving an efficient paradigm for grasping the entire dependence structure. The findings show that pandemic uncertainty improves environmental quality by decreasing GHG in our sample economies at diverse quantiles. Higher levels of GHG (75th–90th quantiles) suggest a strong negative association between pandemic uncertainty and GHG in the majority of nations. The magnitude of the coefficients helps to explain why pandemic uncertainty has a significantly greater impact on GHG in Mexico and Turkey (with a coefficient size of −2) compared to Russia, India, and South Africa, where the effect is considerably smaller (with a coefficient size of −0.05). Furthermore, the rank of asymmetry in our chosen variables fluctuates by nation, underscoring the prominence of governments exercising caution and prudence while implementing pandemic-based uncertainty and environmental quality measures.
{"title":"Asymmetric linkages between pandemic uncertainty and environmental quality: Evidence from emerging economies","authors":"Wen-Chen Chang, Xinjian Zhou, Raima Nazar","doi":"10.1177/0958305X231169271","DOIUrl":"https://doi.org/10.1177/0958305X231169271","url":null,"abstract":"The current COVID-19 pandemic was a huge shock, influencing a wide range of socioeconomic measures, including the environment. The issue of how the uncertainty caused by pandemics will influence environmental quality is critical. This research examines the nonlinear relationship between pandemic uncertainty and environmental quality across leading polluted emerging economies (China, India, Russia, Indonesia, Brazil, Mexico, Iran, Saudi Arabia, South Africa, and Turkey). Using data ranging from 1996 to 2020, a distinctive approach, ‘Quantile-on-Quantile’, is used. Greenhouse gas emissions (GHG) are adopted as a proxy for environmental quality. The outcomes analyze how pandemic uncertainty's quantiles influence the quantiles of GHG asymmetrically, giving an efficient paradigm for grasping the entire dependence structure. The findings show that pandemic uncertainty improves environmental quality by decreasing GHG in our sample economies at diverse quantiles. Higher levels of GHG (75th–90th quantiles) suggest a strong negative association between pandemic uncertainty and GHG in the majority of nations. The magnitude of the coefficients helps to explain why pandemic uncertainty has a significantly greater impact on GHG in Mexico and Turkey (with a coefficient size of −2) compared to Russia, India, and South Africa, where the effect is considerably smaller (with a coefficient size of −0.05). Furthermore, the rank of asymmetry in our chosen variables fluctuates by nation, underscoring the prominence of governments exercising caution and prudence while implementing pandemic-based uncertainty and environmental quality measures.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"68 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88114035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-05DOI: 10.1177/0958305x231167474
Mehmet Demiral, Özge Demiral, Özlem Öztürk-Çetenak, Gürçem Özaytürk, İbrahim Özaytürk
The interest in the trade–environment nexus is growing for emerging countries as their participation in world trade is increasing. However, the available evidence regarding the non-renewable energy effects of trade in intermediate and final products is limited. This study addresses this gap and investigates the separate effects of per capita exports and imports of intermediate and final products on per capita non-renewable energy supply (NES) in the case of 22 emerging industrial economies (EIEs) between 1995 and 2018. The study also considers per capita environmental inventions (EnvINV), industry value-added (IND), services value-added (SERV), and renewable energy supply (RES). After confirming that the modeled variables are cross-sectionally dependent, first-difference stationary, and cointegrated, the long-run heterogeneous coefficients are estimated through the common correlated effects mean group and augmented mean group estimators. Consistent results show that although both are positively associated with NES, the magnitudes of the impacts of intermediate product imports are higher than that of intermediate product exports. Similar effects are observed in the final product trade. The Dumitrescu–Hurlin test finds unidirectional causalities from all trade indicators to NES. Additional results reveal positive impacts of IND and SERV, negative effects of RES, and insignificant impacts of EnvINV. Several policy insights are provided to better inform practitioners about the environmental implications of emerging economies’ trade specialization pattern in energy-intensive global production networks.
{"title":"Non-renewable energy effects of trade in intermediate and final products: Evidence from emerging industrial economies","authors":"Mehmet Demiral, Özge Demiral, Özlem Öztürk-Çetenak, Gürçem Özaytürk, İbrahim Özaytürk","doi":"10.1177/0958305x231167474","DOIUrl":"https://doi.org/10.1177/0958305x231167474","url":null,"abstract":"The interest in the trade–environment nexus is growing for emerging countries as their participation in world trade is increasing. However, the available evidence regarding the non-renewable energy effects of trade in intermediate and final products is limited. This study addresses this gap and investigates the separate effects of per capita exports and imports of intermediate and final products on per capita non-renewable energy supply (NES) in the case of 22 emerging industrial economies (EIEs) between 1995 and 2018. The study also considers per capita environmental inventions (EnvINV), industry value-added (IND), services value-added (SERV), and renewable energy supply (RES). After confirming that the modeled variables are cross-sectionally dependent, first-difference stationary, and cointegrated, the long-run heterogeneous coefficients are estimated through the common correlated effects mean group and augmented mean group estimators. Consistent results show that although both are positively associated with NES, the magnitudes of the impacts of intermediate product imports are higher than that of intermediate product exports. Similar effects are observed in the final product trade. The Dumitrescu–Hurlin test finds unidirectional causalities from all trade indicators to NES. Additional results reveal positive impacts of IND and SERV, negative effects of RES, and insignificant impacts of EnvINV. Several policy insights are provided to better inform practitioners about the environmental implications of emerging economies’ trade specialization pattern in energy-intensive global production networks.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"338 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136006325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.1177/0958305X211050984
R. Maniarasu, S. Rathore, S. Murugan
In today’s world, owing to industrial expansion, urbanization, the rapid growth of the human population, and the high standard of living, the utilization of the most advanced technologies is unavoidable. The enhanced anthropogenic activities worldwide result in a continuous increase in global warming potential, thereby raising a global concern. The constant rise in global warming potential forces the world to mitigate greenhouse gases, particularly carbon dioxide. Carbon dioxide is considered as the primary contributor responsible for global warming and climatic changes. The global anthropogenic carbon dioxide emissions released into the atmosphere can eventually deteriorate the environment and endanger the ecosystem. Combating global warming is one of the main challenges in achieving sustainable development. Carbon capture and storage is a potential solution to mitigate carbon dioxide emissions. There are three main methods for carbon capture and storage: post-combustion, pre-combustion, and oxy-fuel combustion. Among them, post-combustion is used in thermal power plants and industrial sectors, all of which contribute a significant amount of carbon dioxide. Different techniques such as physical and chemical absorption, physical and chemical adsorption, membrane separation, and cryogenic distillation used for carbon capture are thoroughly discussed and presented. Currently, there are various materials including absorbents, adsorbents, and membranes used in carbon dioxide capture. Still, there is a search for new and novel materials and processes for separating and capturing carbon dioxide. This review article provides a comprehensive review of different methods, techniques, materials, and processes used for separating and capturing carbon dioxide from significant stationary point sources.
{"title":"A review on materials and processes for carbon dioxide separation and capture","authors":"R. Maniarasu, S. Rathore, S. Murugan","doi":"10.1177/0958305X211050984","DOIUrl":"https://doi.org/10.1177/0958305X211050984","url":null,"abstract":"In today’s world, owing to industrial expansion, urbanization, the rapid growth of the human population, and the high standard of living, the utilization of the most advanced technologies is unavoidable. The enhanced anthropogenic activities worldwide result in a continuous increase in global warming potential, thereby raising a global concern. The constant rise in global warming potential forces the world to mitigate greenhouse gases, particularly carbon dioxide. Carbon dioxide is considered as the primary contributor responsible for global warming and climatic changes. The global anthropogenic carbon dioxide emissions released into the atmosphere can eventually deteriorate the environment and endanger the ecosystem. Combating global warming is one of the main challenges in achieving sustainable development. Carbon capture and storage is a potential solution to mitigate carbon dioxide emissions. There are three main methods for carbon capture and storage: post-combustion, pre-combustion, and oxy-fuel combustion. Among them, post-combustion is used in thermal power plants and industrial sectors, all of which contribute a significant amount of carbon dioxide. Different techniques such as physical and chemical absorption, physical and chemical adsorption, membrane separation, and cryogenic distillation used for carbon capture are thoroughly discussed and presented. Currently, there are various materials including absorbents, adsorbents, and membranes used in carbon dioxide capture. Still, there is a search for new and novel materials and processes for separating and capturing carbon dioxide. This review article provides a comprehensive review of different methods, techniques, materials, and processes used for separating and capturing carbon dioxide from significant stationary point sources.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"16 1","pages":"3 - 57"},"PeriodicalIF":4.2,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89513502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-28DOI: 10.1177/0958305X221135020
M. Vijayaragavan, V. Krishnakumar, V. Vasan Prabhu
This paper proposes a hybrid approach for the optimal design of electric vehicle (EV) home energy management. The proposed hybrid system combines the execution of the Lichtenberg optimization algorithm and the heap-based optimizer; hence, it is named as LAHBO method. The main purpose of the proposed system is the reduction of costs and improvement of the power factor. Thus, two phases of optimization, such as Lichtenberg optimization algorithm–based cost minimization and heap-based optimizer–based power factor improvement. At initial phase, power conversation, and operating time of the smart home components are decided using the Lichtenberg optimization algorithm method. It is categorized into four groups, such as interruptible, uninterruptible, thermostatically controlled, and non-programmable loads. In second phase, the residential power factor at grid connection point is improved using the heap-based optimizer approach. Finally, the proposed system is carried out on MATLAB platform related to several existing approaches. The proposed method enhances the power factor and diminishes the cost than the existing method. The cost of proposed method is 0.16$ and existing approaches such as CGO, SMO, and SOA cost become 0.2, 0.3, and 0.35$, respectively.
{"title":"Energy management approach in electric vehicle with optimizing electricity consumption cost using hybrid method","authors":"M. Vijayaragavan, V. Krishnakumar, V. Vasan Prabhu","doi":"10.1177/0958305X221135020","DOIUrl":"https://doi.org/10.1177/0958305X221135020","url":null,"abstract":"This paper proposes a hybrid approach for the optimal design of electric vehicle (EV) home energy management. The proposed hybrid system combines the execution of the Lichtenberg optimization algorithm and the heap-based optimizer; hence, it is named as LAHBO method. The main purpose of the proposed system is the reduction of costs and improvement of the power factor. Thus, two phases of optimization, such as Lichtenberg optimization algorithm–based cost minimization and heap-based optimizer–based power factor improvement. At initial phase, power conversation, and operating time of the smart home components are decided using the Lichtenberg optimization algorithm method. It is categorized into four groups, such as interruptible, uninterruptible, thermostatically controlled, and non-programmable loads. In second phase, the residential power factor at grid connection point is improved using the heap-based optimizer approach. Finally, the proposed system is carried out on MATLAB platform related to several existing approaches. The proposed method enhances the power factor and diminishes the cost than the existing method. The cost of proposed method is 0.16$ and existing approaches such as CGO, SMO, and SOA cost become 0.2, 0.3, and 0.35$, respectively.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"18 1","pages":"663 - 689"},"PeriodicalIF":4.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86975809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-01DOI: 10.1177/0958305X211038650
Nazanin Zahra Alikhani, M. Vahdat, M. Owlia
The ever-increasing global demand for energy, oil production/supply and the necessity for alternative approaches regarding energy harvesting have opened a deeper horizon for natural gas utilization. The complexity of the demand–supply match of natural gas and the lack of an optimal pattern of energy consumption have been daunting tasks for the energy decision-makers in the last century. Although laws regarding energy efficiency are formulated and even implemented in some cases, there was no benchmarking analysis which takes all useful indexes into account until recently. However, in this article, by identifying the factors affecting the pattern of gas consumption through the system dynamic approach, regulations associated with productivity are assessed. For this, a regional dynamic integrated gas model is developed. The model effectiveness in handling the system dynamism and various scenarios are investigated through a real case study in Yazd—a central province of Iran—to ascertain the proposed approach. The results show that the developed targeted subsidy law is effective in the household sector. Despite the fact that the thorough implementation of the energy efficiency regulations has positive environmental and economic impacts, these regulations have not been fully implemented in many cases and do not have the required efficiency in the industry sector.
{"title":"Efficacy of energy consumption policy in Iranian National Gas Company: System dynamics approach","authors":"Nazanin Zahra Alikhani, M. Vahdat, M. Owlia","doi":"10.1177/0958305X211038650","DOIUrl":"https://doi.org/10.1177/0958305X211038650","url":null,"abstract":"The ever-increasing global demand for energy, oil production/supply and the necessity for alternative approaches regarding energy harvesting have opened a deeper horizon for natural gas utilization. The complexity of the demand–supply match of natural gas and the lack of an optimal pattern of energy consumption have been daunting tasks for the energy decision-makers in the last century. Although laws regarding energy efficiency are formulated and even implemented in some cases, there was no benchmarking analysis which takes all useful indexes into account until recently. However, in this article, by identifying the factors affecting the pattern of gas consumption through the system dynamic approach, regulations associated with productivity are assessed. For this, a regional dynamic integrated gas model is developed. The model effectiveness in handling the system dynamism and various scenarios are investigated through a real case study in Yazd—a central province of Iran—to ascertain the proposed approach. The results show that the developed targeted subsidy law is effective in the household sector. Despite the fact that the thorough implementation of the energy efficiency regulations has positive environmental and economic impacts, these regulations have not been fully implemented in many cases and do not have the required efficiency in the industry sector.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"44 1","pages":"1279 - 1303"},"PeriodicalIF":4.2,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90520563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1177/0958305X221127645
M. Bai, L. Ho
This paper reviews COVID-19 pandemic-related literature to examine its impacts on oil and gold prices during and since the initial outbreak. The literature reviewed covers varying markets, hypotheses, methodologies, robustness checks, and findings. Crude oil is important to everyday life for individuals, businesses, investors, and markets globally. The forces exerted by demand and supply and shocks can greatly increase volatility in oil commodity prices, which has been the case during the COVID-19 pandemic outbreak. Oil has also in the past been used as a risk diversifier in portfolio optimization strategies. Gold has long been seen as a safe-haven asset that investors flee to during economic and financial market uncertainty and turbulence. How did the COVID-19 health crisis affect these two commodities during its initial outbreak and consequent persistence since then? How did government lockdown and restriction measures, monetary and fiscal stimulus packages, and pandemic-related news impact these commodity markets and their movements? Is there a contagion volatility effect between different markets and if so, who have been net transmitters and recipients of these flow-on effects? This literature review offers some insight into the answers to these questions while also highlighting the importance of further study since COVID-19 and its strains are not finished with the world yet.
{"title":"How do gold and oil react to the COVID-19 pandemic: A review","authors":"M. Bai, L. Ho","doi":"10.1177/0958305X221127645","DOIUrl":"https://doi.org/10.1177/0958305X221127645","url":null,"abstract":"This paper reviews COVID-19 pandemic-related literature to examine its impacts on oil and gold prices during and since the initial outbreak. The literature reviewed covers varying markets, hypotheses, methodologies, robustness checks, and findings. Crude oil is important to everyday life for individuals, businesses, investors, and markets globally. The forces exerted by demand and supply and shocks can greatly increase volatility in oil commodity prices, which has been the case during the COVID-19 pandemic outbreak. Oil has also in the past been used as a risk diversifier in portfolio optimization strategies. Gold has long been seen as a safe-haven asset that investors flee to during economic and financial market uncertainty and turbulence. How did the COVID-19 health crisis affect these two commodities during its initial outbreak and consequent persistence since then? How did government lockdown and restriction measures, monetary and fiscal stimulus packages, and pandemic-related news impact these commodity markets and their movements? Is there a contagion volatility effect between different markets and if so, who have been net transmitters and recipients of these flow-on effects? This literature review offers some insight into the answers to these questions while also highlighting the importance of further study since COVID-19 and its strains are not finished with the world yet.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"108 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76183668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1177/0958305X221125133
S. Sajith, R. Aswani, M. Y. Bhat, Anil Kumar, Tarun Dhingra
This study aims to determine the potential for improving regional cooperation and clean energy generation in the South China Sea (SCS) through Offshore Wind Energy (OWE). The literature review depicts the broad relationship between renewable energy and regional cooperation. The study identifies three variables-great game of geopolitics, geo-economics, and NEO politics- to arrive at a concept of wind-blindness. It refers to the attempt (of the countries involved) to downplay the existing wind resources and avert attention from them to safeguard the region's strategic military importance, existing trade routes, and rich availability of marine resources. Addressing these concerns could strengthen cooperation between the claimant states for technology, knowledge, and practice sharing, to ensure a sustainable South China Sea region. China's investments in OWE in the South China Sea have the potential to meet the Sustainable Development Goals” target of cleaner, accessible, and affordable energy. Finally, the paper suggests that renewable energy development in the region can reduce the maritime transport of fossil fuels, reducing the carbon footprint.
{"title":"Can offshore wind energy lead to a sustainable and secure South China Sea?","authors":"S. Sajith, R. Aswani, M. Y. Bhat, Anil Kumar, Tarun Dhingra","doi":"10.1177/0958305X221125133","DOIUrl":"https://doi.org/10.1177/0958305X221125133","url":null,"abstract":"This study aims to determine the potential for improving regional cooperation and clean energy generation in the South China Sea (SCS) through Offshore Wind Energy (OWE). The literature review depicts the broad relationship between renewable energy and regional cooperation. The study identifies three variables-great game of geopolitics, geo-economics, and NEO politics- to arrive at a concept of wind-blindness. It refers to the attempt (of the countries involved) to downplay the existing wind resources and avert attention from them to safeguard the region's strategic military importance, existing trade routes, and rich availability of marine resources. Addressing these concerns could strengthen cooperation between the claimant states for technology, knowledge, and practice sharing, to ensure a sustainable South China Sea region. China's investments in OWE in the South China Sea have the potential to meet the Sustainable Development Goals” target of cleaner, accessible, and affordable energy. Finally, the paper suggests that renewable energy development in the region can reduce the maritime transport of fossil fuels, reducing the carbon footprint.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"1 1","pages":"2858 - 2875"},"PeriodicalIF":4.2,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81674551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-28DOI: 10.1177/0958305X221121281
Muhammad Ahmad, A. Shahzad, M. Nafees, Mumtaz Qadri
In this paper, an attempt has been made to highlight major developments of vertical axis wind turbines (VAWTs) in the last few decades. The effects of various design parameters such as airfoil, number of blades, solidity, aspect ratio, blade helicity, and overlap ratio have been critically analyzed. Wind energy is the most promising renewable, cost-effective, efficient, and accessible source for both domestic and commercial applications. Horizontal axis wind turbines are highly developed and are being used for medium-to-large scale power projects. VAWT are considered viable options for urban and semi-urban areas. These turbines have several characteristics, such as omnidirectional, power generation in weak and unstable winds, esthetically sound, safety, and low noise. Darrieus turbines with a fixed blade-type have starting problems at low wind speeds. Savonius turbines have good starting capability; however, their power coefficients are lower than other types of VAWT. To overcome the shortcomings of conventional wind turbines, an innovative engineering solution was sought in the design of hybrid VAWT. The analysis revealed that hybrid wind turbines have addressed the deficiencies to an extent; however, the overall performance is still less than that of conventional wind turbines. Several recommendations have been made based on state-of-the-art information from the perspective of future studies and acceptability. It was concluded that vast opportunities for wind turbine applications are available in urban areas; however, further academic research is required on critical aspects such as self-starting at low wind speeds, efficiency, structural reliability, design improvement for aerodynamic performance, and wind resource assessment.
{"title":"An overview of aerodynamic performance analysis of vertical axis wind turbines","authors":"Muhammad Ahmad, A. Shahzad, M. Nafees, Mumtaz Qadri","doi":"10.1177/0958305X221121281","DOIUrl":"https://doi.org/10.1177/0958305X221121281","url":null,"abstract":"In this paper, an attempt has been made to highlight major developments of vertical axis wind turbines (VAWTs) in the last few decades. The effects of various design parameters such as airfoil, number of blades, solidity, aspect ratio, blade helicity, and overlap ratio have been critically analyzed. Wind energy is the most promising renewable, cost-effective, efficient, and accessible source for both domestic and commercial applications. Horizontal axis wind turbines are highly developed and are being used for medium-to-large scale power projects. VAWT are considered viable options for urban and semi-urban areas. These turbines have several characteristics, such as omnidirectional, power generation in weak and unstable winds, esthetically sound, safety, and low noise. Darrieus turbines with a fixed blade-type have starting problems at low wind speeds. Savonius turbines have good starting capability; however, their power coefficients are lower than other types of VAWT. To overcome the shortcomings of conventional wind turbines, an innovative engineering solution was sought in the design of hybrid VAWT. The analysis revealed that hybrid wind turbines have addressed the deficiencies to an extent; however, the overall performance is still less than that of conventional wind turbines. Several recommendations have been made based on state-of-the-art information from the perspective of future studies and acceptability. It was concluded that vast opportunities for wind turbine applications are available in urban areas; however, further academic research is required on critical aspects such as self-starting at low wind speeds, efficiency, structural reliability, design improvement for aerodynamic performance, and wind resource assessment.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"37 1","pages":"2815 - 2857"},"PeriodicalIF":4.2,"publicationDate":"2022-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73672142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-17DOI: 10.1177/0958305X221120930
Uğur Ursavaş, Veli Yılancı
This study investigates the convergence in ecological footprint per capita across Southern Common Market countries over the period 1961–2016 within the framework of the environmental convergence hypothesis. However, unlike the existing literature, which mainly tests the convergence for the overall period, this study follows a different path. First, the time series is decomposed into different frequencies using the discrete wavelet transform method. Then, using the Fourier Augmented Dickey-Fuller and Augmented Dickey-Fuller unit root tests, convergence in ecological footprint per capita is tested for different time scales; short-run, medium-run, and finally long-run. The results indicate that countries show different convergence tendencies at different time scales. While the results support the convergence hypothesis for all countries in the short-run, the convergence hypothesis holds for only four and three of the five countries in the medium and long-run, respectively. Besides, the results show that the convergence hypothesis holds for only Uruguay for the whole period.
{"title":"Convergence analysis of ecological footprint at different time scales: Evidence from Southern Common Market countries","authors":"Uğur Ursavaş, Veli Yılancı","doi":"10.1177/0958305X221120930","DOIUrl":"https://doi.org/10.1177/0958305X221120930","url":null,"abstract":"This study investigates the convergence in ecological footprint per capita across Southern Common Market countries over the period 1961–2016 within the framework of the environmental convergence hypothesis. However, unlike the existing literature, which mainly tests the convergence for the overall period, this study follows a different path. First, the time series is decomposed into different frequencies using the discrete wavelet transform method. Then, using the Fourier Augmented Dickey-Fuller and Augmented Dickey-Fuller unit root tests, convergence in ecological footprint per capita is tested for different time scales; short-run, medium-run, and finally long-run. The results indicate that countries show different convergence tendencies at different time scales. While the results support the convergence hypothesis for all countries in the short-run, the convergence hypothesis holds for only four and three of the five countries in the medium and long-run, respectively. Besides, the results show that the convergence hypothesis holds for only Uruguay for the whole period.","PeriodicalId":11652,"journal":{"name":"Energy & Environment","volume":"28 1","pages":"429 - 442"},"PeriodicalIF":4.2,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88271746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：