China’s coal,petroleum,natural gas and electric power industries are in different stages.Coal has a falling share in China’s energy mix,and clean coal is on the rise.While China’s petroleum production stagnates,the...China’s coal,petroleum,natural gas and electric power industries are in different stages.Coal has a falling share in China’s energy mix,and clean coal is on the rise.While China’s petroleum production stagnates,the natural gas and electric power industries are developing rapidly.Amid the changing energy industries,China’s energy regulatory system has evolved from vertical to integrated management,and energy administrative and supervisory functions have become integrated over time.These changes have played different roles during specific periods,either enhancing or hampering a highefficient development of China’s energy industry.Over the past seven decades,China’s energy industry has acquired important capabilities to support the nation’s social and economic development.With industrial prowess in clean energy and energy efficiency,China has become a leader in global low-carbon and clean energy transition.In the future,China'should attach great importance to the adverse short-term effects of energy transition on its energy security.By deepening energy institutional reform,China'should enhance its energy security through energy transition.展开更多
Under the context of economic transformation and upgrading and the continued advancement of supplyside reforms in China, the development of the energy industry is confronted with many problems and challenges, such as ...Under the context of economic transformation and upgrading and the continued advancement of supplyside reforms in China, the development of the energy industry is confronted with many problems and challenges, such as insufficient energy investment, a shortage of financing channels,and the low participation of social capital. In order to fully mobilize social capital to invest in energy, enhance energy investment efficiency, expand energy financing channels,and increase the vitality of the energy industry, the state has recently issued the Implementing Opinions on Deepening the Reform of Investment and the Financing System in the Energy Industry( "Opinions"). This paper provides a deep interpretation of this document from the perspectives of the background for the investment and financing system reform in the energy industry,the main content of the reform, the problems and challenges confronting the reform,and the expected effects from the reform, and analyzes the objectives, ideas and problems of the reform, in order to effectively promote the investment and financing system reform in the energy industry.展开更多
As it is known to all, the new energy industry plays an important in the economic transformation and structure adjustment of our country. The government attaches great importance to the development of the new energy i...As it is known to all, the new energy industry plays an important in the economic transformation and structure adjustment of our country. The government attaches great importance to the development of the new energy industry. Particularly for the developing countries, to achieve rapid development require a lot of capital. However, there are some problems with finance in the development of the new energy industry. Based on the analysis, this paper puts forward some countermeasures.展开更多
In a very real sense,China did not have a legal system of energy until 1978 when the policy of reform and opening-up was carried out.Over the 30 years since then,China has achieved great accomplishments in energy deve...In a very real sense,China did not have a legal system of energy until 1978 when the policy of reform and opening-up was carried out.Over the 30 years since then,China has achieved great accomplishments in energy development,which have attracted worldwide attention,展开更多
This paper presents the guidelines and basic ideas for working out the development plan of new and renewable energy based upon China’s conditions, the foundation of industrialization development, targets of developme...This paper presents the guidelines and basic ideas for working out the development plan of new and renewable energy based upon China’s conditions, the foundation of industrialization development, targets of development for year 2000-2015 and the main tasks of industrialization system construction.展开更多
This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to m...This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to measure the green development level of the new energy vehicle industry in Chongqing,and compared with neighboring provinces such as Yunnan,Guizhou,and Sichuan.Policy recommendations are proposed to promote the development of the new energy vehicle industry in Chongqing City.展开更多
At present biomass energy industry is in its infancy in China and it has a bright future. Biomass energy production used grain as raw materials has entered industrialization phase.Some key technologies of biomass ener...At present biomass energy industry is in its infancy in China and it has a bright future. Biomass energy production used grain as raw materials has entered industrialization phase.Some key technologies of biomass energy industry are coming to mature.China has issued relevant industrial standards laws and regulations,and has provided support in finance,loan,tax,etc.But China's biomass energy industry is faced with many problems which need to be solved.For example,taking grain as raw materials is unsustain...展开更多
Energy service is an effective way to promote energy conservation by market mechanisms,including energy saving services,energy procurement,supply of many varieties of energy,supply of renewable energy technologies,ene...Energy service is an effective way to promote energy conservation by market mechanisms,including energy saving services,energy procurement,supply of many varieties of energy,supply of renewable energy technologies,energy-related consulting services,risk management,etc.China is a major energy consumer but energy is in short supply,and the efficiency of energy use is low.China's energy service industry has expanded rapidly,in terms of both the number of new Energy Service Companies entering the market and amount of capital invested in Energy Performance Contracting projects,but the energy service sector in China is still at an early stage of development.Developed countries began early in developing the energy service sector and their energy service market is mature,and the experience of developed countries shows that energy services play a significant role in advancing energy saving and emission reduction.Under the new situation,China needs combine energy services experience of developed countries,and take following measures to accelerate China's energy services rapid and healthy development,including the long-term aspects of policy planning,energy-saving core technology,finance and capital investment,public sector reductions,personnel training,and so on.展开更多
Under the dual pressures of energy crisis and environmental pollution,China’s new energy power industry has become a focal point for environmental management and requires greater investment.In this context,as a signi...Under the dual pressures of energy crisis and environmental pollution,China’s new energy power industry has become a focal point for environmental management and requires greater investment.In this context,as a significant input of investment projects,discount rate requires a well-calibrated evaluation because new energy power investment projects are highly capital intensive.The main objective of this paper is to evaluate the discount rate of China’s new energy power industry.First,we use Moving Average to correct the parameters of capital asset pricing model(CAPM)and weighted average cost of capital,which extends the literature on the avoidance of CAPM noise information problem.Second,we study the industry-level annual discount rates of mainly China’s new energy power industries,including hydropower,nuclear power,wind power,and photovoltaic power industries for the period of 2014-2019.The results show that discount rates in China’s new energy power industries evolved differently between the years of 2014-2019 with average annual discount rates being 7.56%,5.83%,5.60%,and 8.64%,for the hydropower,nuclear power,wind power,and photovoltaic power industries,respectively.In 2019,the four annual discount rates were highest for the photovoltaic power industry(8.66%),followed by hydropower(7.17%),wind power(5.72%),and nuclear power industry(5.26%).Forecasting to 2020 from the 2019 evaluation base period,the discount rates are 6.37%,5.00%,6.57%,and 9.05%for the photovoltaic power,hydropower,wind power,and nuclear power industries,respectively.Under the different capital structures,their forecasts for the photovoltaic power,hydropower,wind power,and nuclear power industries in 2020 are,respectively,within[4.35%,9.24%],[3.92%,7.10%],[4.58%,10.40%],[5.46%,14.81%].We also discussed more details on capital structure and forecast period of discount rates for China’s new energy power industries.Our analysis shows that it is necessary to establish a new energy power industry database and steadily promote the implementation of policies.展开更多
Ladies, Gentlemen, Friends: Today, I feel greatly honoured to have opportunity to attend European Union-China《Energy Cooperation Industry Conference cosponsored by China State Science and Technology Commission and Eu...Ladies, Gentlemen, Friends: Today, I feel greatly honoured to have opportunity to attend European Union-China《Energy Cooperation Industry Conference cosponsored by China State Science and Technology Commission and European Union of Federalists, held in Beijing. On this occasion, please allow me on behalf of the Ministry of Electric Power, People’s Republic of China, to express thanks for China State Science展开更多
Shaanxi regions have abundant coal, gas, oil and mineral resources, however, the low efficiency of the energy development and utilization of Shaanxi province, greatly influence the northern Shaanxi energy base to cont...Shaanxi regions have abundant coal, gas, oil and mineral resources, however, the low efficiency of the energy development and utilization of Shaanxi province, greatly influence the northern Shaanxi energy base to continue the development. For mineral resources property not clear present situation, proposed the resource sharing of the Shaanxi energy base mechanisms, mainly including mineral resources property division, energy and natural resources management enterprise shareholding system of depreciation of the mechanism.展开更多
Wind energy is a kind of clean renewable energy, which is also relatively mature in technology, with largescale development conditions and prospect for the commercialization. The development of wind energy is a system...Wind energy is a kind of clean renewable energy, which is also relatively mature in technology, with largescale development conditions and prospect for the commercialization. The development of wind energy is a systematic project, involving policy, law, technology, economy, society, environment, education and other aspects. The relationship among all the aspects should be well treated and coordinated. This paper has discussed the following relationships which should be well coordinated: relationship between wind resources and wind energy development, relationship between the wind turbine generator system and the components, relationship between wind energy technology and wind energy industry, relationship between off-grid wind power and grid-connected wind power, relationship between wind farm and the power grid, relationship between onshore wind power and offshore wind power, relationship between wind energy and other energies, relationship between technology introduction and self-innovation, relationship among foreign-funded, joint ventured and domestic-funded enterprises and relationship between the government guidance and the market regulation, as well as giving out some suggestions.展开更多
According to the White Paper on Development of 2016New Energy Automobile Electronic Industry released recently by the Electronic Science 8c Technology Intelligence Research Institute of Industry and Information Techno...According to the White Paper on Development of 2016New Energy Automobile Electronic Industry released recently by the Electronic Science 8c Technology Intelligence Research Institute of Industry and Information Technology Ministry,China’s new energy automobile electronic industrial scale achieved nearly RMB 4.5 billion in 2015 and it is expected to reach RMB 23.7 billion by 2020 with展开更多
Nowadays,China has become the world’s largest energy producer,consumer and CO_2 emitter.Although the economic growth is slowing down,China still has a bigger portion in world’s energy demand increment for its larger...Nowadays,China has become the world’s largest energy producer,consumer and CO_2 emitter.Although the economic growth is slowing down,China still has a bigger portion in world’s energy demand increment for its larger economic volume and is an important endogenous factor of global energy market.展开更多
With the development of global energy transition and carbon neutrality, the Biden administration attempts to enhance the economic competitiveness of the United States and its leadership in the field of international c...With the development of global energy transition and carbon neutrality, the Biden administration attempts to enhance the economic competitiveness of the United States and its leadership in the field of international climate politics by promoting the development of clean energy industries such as solar photovoltaics, electric vehicles, and wind power generation. Toward this end, the Biden administration and the US Congress have increased support for the domestic clean energy industry through industrial policies and leveraged allied resources to achieve their agenda for this industry. A major target of the policies adopted by the Biden administration is competition with China. The approaches include politicizing the clean energy industry, linking investment access policies related to the clean energy industry with so-called national security considerations, and upgrading trade barriers against China. The competition orientation and policy measures of the US government in the field of clean energy industry will pose challenges to the international development of the clean energy industry in China. However, the US competition with China in the clean energy industry will be restricted due to domestic partisan politics and other factors. Thus, the potential exists for cooperation between China and the United States in the clean energy industry, which could create favorable conditions for the two countries to build a mutually beneficial cooperative relationship.展开更多
This paper examines spatio-temporal characteristics of an oasis economy and its relationship with water and mineral resources in the Tarim River Basin from 1965 to 2005. A spatial autocorrelation model, the center of ...This paper examines spatio-temporal characteristics of an oasis economy and its relationship with water and mineral resources in the Tarim River Basin from 1965 to 2005. A spatial autocorrelation model, the center of gravity model, and index system of the regional central city are used to probe the evolution laws of spatial structure of oasis economy. The study finds that: 1) The economic centre of gravity, whose variation track during this period follows linear rate law, was moving from headstream to middle reaches of the Tarim River. 2) Positive spatial autocorrelation which showed a waving and ascending trend of regional economy was significant and the neighbor effect of regional economic growth was strengthened continuously. 3) The regional economic centre was located in Hotan City before 1980, moved to Aksu City during the 1980s and to Korla City after 1990. We conclude that above all, during the recent four decades the evolution of the oasis economy in this region has gone through three stages: a traditional agriculture stage (before 1980), oasis agriculture and agricultural product processing stage (1980–1990) and oasis energy industry stage (after 1990). Furthermore, the dependence degree of the oasis economy on natural resources in different stages are studied by using dominance index, regression model, and grey relation method, which shows that an oasis econ- omy highly depends on water resources in the oasis agriculture and agricultural product processing stage while it de- pends more on mineral resources such as oil and natural gas during the oasis energy industry stage.展开更多
This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant litera...This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant literature on the efficiency in steam boilers. However, few deal exclusively with feedwater systems. The total horsepower in boiler feed pumps and the corresponding energy consumption estimated for Brazilian industries are as follows： 110.5 MWE of motor driven power and a yearly electricity consumption of 442 GWh for a population of 7,800 steam boilers, approximately. It is estimated that there can be an efficiency improvement in feedwater systems for industrial boilers of 30% on average. To a large extent, these opportunities reside in older boilers that are very common in the Brazilian industrial sector. The most common causes for the low efficiency of feedwater systems are： the control loop of the feedwater, oversized boilers and excessive operational pressure set. Sometimes, the boiler feedwater system can present more than one problem simultaneously. Any kind of solution involves some speed regulation, new pump and number of pumps. Each problem generation facilities were selected in which common inefficiencies cases, the improvement in efficiency can get to 37%. form of intervention in boiler feed pumps, such as： impeller trim, may have more than one solution. Three distinct industrial steam are present. The suggested solutions were analyzed. In these three展开更多
As a strategic emerging industry,the new energy vehicle industry has been a key industry in China in recent years and has great significance for China to realize industrial transformation and upgrading,and seize the c...As a strategic emerging industry,the new energy vehicle industry has been a key industry in China in recent years and has great significance for China to realize industrial transformation and upgrading,and seize the commanding heights of international competition.In particular,the industry has been vigorously boosted by the introduction of the subsidy policy in 2014 and has achieved faster development.Today,China’s new展开更多
According to the latest report of Pike Research,the demand for rare earth in the new energy technology field will break the mark of 12,000 tons to reach 12,920 tons in 2017 from about 9,000 tons in 2011,indicating rap...According to the latest report of Pike Research,the demand for rare earth in the new energy technology field will break the mark of 12,000 tons to reach 12,920 tons in 2017 from about 9,000 tons in 2011,indicating rapid development of China’s rare earth hydrogen storage material industry.展开更多
Based on the data of listed companies in the core industry chain of China's new energy vehicles in 2015 and 2021,this paper constructs their industrial network from the perspective of the value chain,and uses meth...Based on the data of listed companies in the core industry chain of China's new energy vehicles in 2015 and 2021,this paper constructs their industrial network from the perspective of the value chain,and uses methods such as social network and negative binomial regression model to study the characteristics,evolution,differences,and formation mechanisms of different value chain networks.The results show that:(1)R&D-oriented,production-oriented,and service-oriented networks share several common features:These networks are simultaneously expanding in scale and transitioning towards more efficient“small world”network;The degree distribution in these networks follows a power-law distribution,indicating a scale-free network structure;There is a decrease in the power-law exponent of network's degree distribution,indicating an increase in network heterogeneity.Furthermore,there is a significant positive correlation between the degrees of nodes in networks with diverse value chains,suggesting that the same node holds a similar level of significance across different networks.(2)The number of power-prestige,power and prestige nodes increases in the networks of all value chain segments,except in the service-oriented network,where there are no power nodes.In each value chain network,these nodes have different agglomeration directions:In R&D-oriented network,the nodes tend to cluster around headquarters and high-level cities.In contrast,service-oriented network shows a concentration of nodes in municipalities,sub-provincial and provincial capitals.Similarly,production-oriented network demonstrates a clustering of nodes in traditional production bases.(3)Different value-added segments of industry form different types of agglomeration in pursuit of different factor endowments and agglomeration effect,and form the spatial structure of the strongest connection industrial network with different characteristics.The R&D-oriented networks have always been an integrated and closely connected multiple core-periphery structure community with the influence of social,technological and geographical proximities;Transformation of service-oriented network from an integrated and closely connected multiple core-periphery structure community to a multiple core-semi-periphery-periphery structure community with the influence of social,geographical and institutional proximities;Transformation of production-oriented network from the partially integrated and localized core-periphery structure community to the more decentralized multiple independent core-periphery structure community with the influence of the social,institutional of administrative boundaries and geographical proximities.展开更多
文摘China’s coal,petroleum,natural gas and electric power industries are in different stages.Coal has a falling share in China’s energy mix,and clean coal is on the rise.While China’s petroleum production stagnates,the natural gas and electric power industries are developing rapidly.Amid the changing energy industries,China’s energy regulatory system has evolved from vertical to integrated management,and energy administrative and supervisory functions have become integrated over time.These changes have played different roles during specific periods,either enhancing or hampering a highefficient development of China’s energy industry.Over the past seven decades,China’s energy industry has acquired important capabilities to support the nation’s social and economic development.With industrial prowess in clean energy and energy efficiency,China has become a leader in global low-carbon and clean energy transition.In the future,China'should attach great importance to the adverse short-term effects of energy transition on its energy security.By deepening energy institutional reform,China'should enhance its energy security through energy transition.
文摘Under the context of economic transformation and upgrading and the continued advancement of supplyside reforms in China, the development of the energy industry is confronted with many problems and challenges, such as insufficient energy investment, a shortage of financing channels,and the low participation of social capital. In order to fully mobilize social capital to invest in energy, enhance energy investment efficiency, expand energy financing channels,and increase the vitality of the energy industry, the state has recently issued the Implementing Opinions on Deepening the Reform of Investment and the Financing System in the Energy Industry( "Opinions"). This paper provides a deep interpretation of this document from the perspectives of the background for the investment and financing system reform in the energy industry,the main content of the reform, the problems and challenges confronting the reform,and the expected effects from the reform, and analyzes the objectives, ideas and problems of the reform, in order to effectively promote the investment and financing system reform in the energy industry.
文摘As it is known to all, the new energy industry plays an important in the economic transformation and structure adjustment of our country. The government attaches great importance to the development of the new energy industry. Particularly for the developing countries, to achieve rapid development require a lot of capital. However, there are some problems with finance in the development of the new energy industry. Based on the analysis, this paper puts forward some countermeasures.
文摘In a very real sense,China did not have a legal system of energy until 1978 when the policy of reform and opening-up was carried out.Over the 30 years since then,China has achieved great accomplishments in energy development,which have attracted worldwide attention,
文摘This paper presents the guidelines and basic ideas for working out the development plan of new and renewable energy based upon China’s conditions, the foundation of industrialization development, targets of development for year 2000-2015 and the main tasks of industrialization system construction.
文摘This article takes 2016-2022 as the inspection period to construct an evaluation index system for the green development level of the new energy vehicle industry.The entropy method and comprehensive index are used to measure the green development level of the new energy vehicle industry in Chongqing,and compared with neighboring provinces such as Yunnan,Guizhou,and Sichuan.Policy recommendations are proposed to promote the development of the new energy vehicle industry in Chongqing City.
文摘At present biomass energy industry is in its infancy in China and it has a bright future. Biomass energy production used grain as raw materials has entered industrialization phase.Some key technologies of biomass energy industry are coming to mature.China has issued relevant industrial standards laws and regulations,and has provided support in finance,loan,tax,etc.But China's biomass energy industry is faced with many problems which need to be solved.For example,taking grain as raw materials is unsustain...
基金supported by Chinese Clean Development Mechanism Fund [grant number 2013034]
文摘Energy service is an effective way to promote energy conservation by market mechanisms,including energy saving services,energy procurement,supply of many varieties of energy,supply of renewable energy technologies,energy-related consulting services,risk management,etc.China is a major energy consumer but energy is in short supply,and the efficiency of energy use is low.China's energy service industry has expanded rapidly,in terms of both the number of new Energy Service Companies entering the market and amount of capital invested in Energy Performance Contracting projects,but the energy service sector in China is still at an early stage of development.Developed countries began early in developing the energy service sector and their energy service market is mature,and the experience of developed countries shows that energy services play a significant role in advancing energy saving and emission reduction.Under the new situation,China needs combine energy services experience of developed countries,and take following measures to accelerate China's energy services rapid and healthy development,including the long-term aspects of policy planning,energy-saving core technology,finance and capital investment,public sector reductions,personnel training,and so on.
文摘Under the dual pressures of energy crisis and environmental pollution,China’s new energy power industry has become a focal point for environmental management and requires greater investment.In this context,as a significant input of investment projects,discount rate requires a well-calibrated evaluation because new energy power investment projects are highly capital intensive.The main objective of this paper is to evaluate the discount rate of China’s new energy power industry.First,we use Moving Average to correct the parameters of capital asset pricing model(CAPM)and weighted average cost of capital,which extends the literature on the avoidance of CAPM noise information problem.Second,we study the industry-level annual discount rates of mainly China’s new energy power industries,including hydropower,nuclear power,wind power,and photovoltaic power industries for the period of 2014-2019.The results show that discount rates in China’s new energy power industries evolved differently between the years of 2014-2019 with average annual discount rates being 7.56%,5.83%,5.60%,and 8.64%,for the hydropower,nuclear power,wind power,and photovoltaic power industries,respectively.In 2019,the four annual discount rates were highest for the photovoltaic power industry(8.66%),followed by hydropower(7.17%),wind power(5.72%),and nuclear power industry(5.26%).Forecasting to 2020 from the 2019 evaluation base period,the discount rates are 6.37%,5.00%,6.57%,and 9.05%for the photovoltaic power,hydropower,wind power,and nuclear power industries,respectively.Under the different capital structures,their forecasts for the photovoltaic power,hydropower,wind power,and nuclear power industries in 2020 are,respectively,within[4.35%,9.24%],[3.92%,7.10%],[4.58%,10.40%],[5.46%,14.81%].We also discussed more details on capital structure and forecast period of discount rates for China’s new energy power industries.Our analysis shows that it is necessary to establish a new energy power industry database and steadily promote the implementation of policies.
文摘Ladies, Gentlemen, Friends: Today, I feel greatly honoured to have opportunity to attend European Union-China《Energy Cooperation Industry Conference cosponsored by China State Science and Technology Commission and European Union of Federalists, held in Beijing. On this occasion, please allow me on behalf of the Ministry of Electric Power, People’s Republic of China, to express thanks for China State Science
文摘Shaanxi regions have abundant coal, gas, oil and mineral resources, however, the low efficiency of the energy development and utilization of Shaanxi province, greatly influence the northern Shaanxi energy base to continue the development. For mineral resources property not clear present situation, proposed the resource sharing of the Shaanxi energy base mechanisms, mainly including mineral resources property division, energy and natural resources management enterprise shareholding system of depreciation of the mechanism.
文摘Wind energy is a kind of clean renewable energy, which is also relatively mature in technology, with largescale development conditions and prospect for the commercialization. The development of wind energy is a systematic project, involving policy, law, technology, economy, society, environment, education and other aspects. The relationship among all the aspects should be well treated and coordinated. This paper has discussed the following relationships which should be well coordinated: relationship between wind resources and wind energy development, relationship between the wind turbine generator system and the components, relationship between wind energy technology and wind energy industry, relationship between off-grid wind power and grid-connected wind power, relationship between wind farm and the power grid, relationship between onshore wind power and offshore wind power, relationship between wind energy and other energies, relationship between technology introduction and self-innovation, relationship among foreign-funded, joint ventured and domestic-funded enterprises and relationship between the government guidance and the market regulation, as well as giving out some suggestions.
文摘According to the White Paper on Development of 2016New Energy Automobile Electronic Industry released recently by the Electronic Science 8c Technology Intelligence Research Institute of Industry and Information Technology Ministry,China’s new energy automobile electronic industrial scale achieved nearly RMB 4.5 billion in 2015 and it is expected to reach RMB 23.7 billion by 2020 with
文摘Nowadays,China has become the world’s largest energy producer,consumer and CO_2 emitter.Although the economic growth is slowing down,China still has a bigger portion in world’s energy demand increment for its larger economic volume and is an important endogenous factor of global energy market.
文摘With the development of global energy transition and carbon neutrality, the Biden administration attempts to enhance the economic competitiveness of the United States and its leadership in the field of international climate politics by promoting the development of clean energy industries such as solar photovoltaics, electric vehicles, and wind power generation. Toward this end, the Biden administration and the US Congress have increased support for the domestic clean energy industry through industrial policies and leveraged allied resources to achieve their agenda for this industry. A major target of the policies adopted by the Biden administration is competition with China. The approaches include politicizing the clean energy industry, linking investment access policies related to the clean energy industry with so-called national security considerations, and upgrading trade barriers against China. The competition orientation and policy measures of the US government in the field of clean energy industry will pose challenges to the international development of the clean energy industry in China. However, the US competition with China in the clean energy industry will be restricted due to domestic partisan politics and other factors. Thus, the potential exists for cooperation between China and the United States in the clean energy industry, which could create favorable conditions for the two countries to build a mutually beneficial cooperative relationship.
基金Under the auspices of Knowledge Innovation Program of Chinese Academy of Sciences (No. KZCX2-XB2-03-03)Western Doctor Plan of Chinese Academy of Sciences
文摘This paper examines spatio-temporal characteristics of an oasis economy and its relationship with water and mineral resources in the Tarim River Basin from 1965 to 2005. A spatial autocorrelation model, the center of gravity model, and index system of the regional central city are used to probe the evolution laws of spatial structure of oasis economy. The study finds that: 1) The economic centre of gravity, whose variation track during this period follows linear rate law, was moving from headstream to middle reaches of the Tarim River. 2) Positive spatial autocorrelation which showed a waving and ascending trend of regional economy was significant and the neighbor effect of regional economic growth was strengthened continuously. 3) The regional economic centre was located in Hotan City before 1980, moved to Aksu City during the 1980s and to Korla City after 1990. We conclude that above all, during the recent four decades the evolution of the oasis economy in this region has gone through three stages: a traditional agriculture stage (before 1980), oasis agriculture and agricultural product processing stage (1980–1990) and oasis energy industry stage (after 1990). Furthermore, the dependence degree of the oasis economy on natural resources in different stages are studied by using dominance index, regression model, and grey relation method, which shows that an oasis econ- omy highly depends on water resources in the oasis agriculture and agricultural product processing stage while it de- pends more on mineral resources such as oil and natural gas during the oasis energy industry stage.
文摘This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant literature on the efficiency in steam boilers. However, few deal exclusively with feedwater systems. The total horsepower in boiler feed pumps and the corresponding energy consumption estimated for Brazilian industries are as follows： 110.5 MWE of motor driven power and a yearly electricity consumption of 442 GWh for a population of 7,800 steam boilers, approximately. It is estimated that there can be an efficiency improvement in feedwater systems for industrial boilers of 30% on average. To a large extent, these opportunities reside in older boilers that are very common in the Brazilian industrial sector. The most common causes for the low efficiency of feedwater systems are： the control loop of the feedwater, oversized boilers and excessive operational pressure set. Sometimes, the boiler feedwater system can present more than one problem simultaneously. Any kind of solution involves some speed regulation, new pump and number of pumps. Each problem generation facilities were selected in which common inefficiencies cases, the improvement in efficiency can get to 37%. form of intervention in boiler feed pumps, such as： impeller trim, may have more than one solution. Three distinct industrial steam are present. The suggested solutions were analyzed. In these three
文摘As a strategic emerging industry,the new energy vehicle industry has been a key industry in China in recent years and has great significance for China to realize industrial transformation and upgrading,and seize the commanding heights of international competition.In particular,the industry has been vigorously boosted by the introduction of the subsidy policy in 2014 and has achieved faster development.Today,China’s new
文摘According to the latest report of Pike Research,the demand for rare earth in the new energy technology field will break the mark of 12,000 tons to reach 12,920 tons in 2017 from about 9,000 tons in 2011,indicating rapid development of China’s rare earth hydrogen storage material industry.
基金National Natural Science Foundation of China,No.41971198The Second Tibetan Plateau Scientific Expedition and Research Program,No.2019QZKK1005。
文摘Based on the data of listed companies in the core industry chain of China's new energy vehicles in 2015 and 2021,this paper constructs their industrial network from the perspective of the value chain,and uses methods such as social network and negative binomial regression model to study the characteristics,evolution,differences,and formation mechanisms of different value chain networks.The results show that:(1)R&D-oriented,production-oriented,and service-oriented networks share several common features:These networks are simultaneously expanding in scale and transitioning towards more efficient“small world”network;The degree distribution in these networks follows a power-law distribution,indicating a scale-free network structure;There is a decrease in the power-law exponent of network's degree distribution,indicating an increase in network heterogeneity.Furthermore,there is a significant positive correlation between the degrees of nodes in networks with diverse value chains,suggesting that the same node holds a similar level of significance across different networks.(2)The number of power-prestige,power and prestige nodes increases in the networks of all value chain segments,except in the service-oriented network,where there are no power nodes.In each value chain network,these nodes have different agglomeration directions:In R&D-oriented network,the nodes tend to cluster around headquarters and high-level cities.In contrast,service-oriented network shows a concentration of nodes in municipalities,sub-provincial and provincial capitals.Similarly,production-oriented network demonstrates a clustering of nodes in traditional production bases.(3)Different value-added segments of industry form different types of agglomeration in pursuit of different factor endowments and agglomeration effect,and form the spatial structure of the strongest connection industrial network with different characteristics.The R&D-oriented networks have always been an integrated and closely connected multiple core-periphery structure community with the influence of social,technological and geographical proximities;Transformation of service-oriented network from an integrated and closely connected multiple core-periphery structure community to a multiple core-semi-periphery-periphery structure community with the influence of social,geographical and institutional proximities;Transformation of production-oriented network from the partially integrated and localized core-periphery structure community to the more decentralized multiple independent core-periphery structure community with the influence of the social,institutional of administrative boundaries and geographical proximities.
