A major roadblock in achieving substantial building energy reduction is the low performance of old buildings that account for a significant portion of the building energy consumption.Finding low-cost energy retrofit s...A major roadblock in achieving substantial building energy reduction is the low performance of old buildings that account for a significant portion of the building energy consumption.Finding low-cost energy retrofit solutions that do not disrupt occupants’daily life during the retrofitting is the key to successful building energy retrofit initiatives.In this paper,a novel and low-cost exterior wall retrofitting solution is introduced,and its performance in reducing space cooling load was quantitatively evaluated to demonstrate its feasibility and effectiveness.The primary goal of this paper is to provide a quantitative assessment of the cooling-energy savings potential by using the proposed new wall system.The intended retrofitting targets are the large amount of existing cavity-wall buildings located in hot climate regions.The quantification of the before-after heat-flux reduction was conducted through a 3-dimensional steady-state low turbulence computational fluid dynamics(CFD)model,which is validated by benchmarking its prediction against the published experimental case results.The outcomes of the investigation suggest that this simple low-cost solution has great potentials in reducing buildings’summer cooling load in hot climate regions.The applicability of this solution is not limited to retrofitting existing buildings.New energy-efficient building designs can also adopt this solution in their envelope systems.展开更多
Many U.S.utilities incentivize residential energy reduction through rebates,often in response to state mandates for energy reduction or from a desire to reduce demand to mitigate the need to grow generating assets.The...Many U.S.utilities incentivize residential energy reduction through rebates,often in response to state mandates for energy reduction or from a desire to reduce demand to mitigate the need to grow generating assets.The assumption built into incentive programs is that the least efficient residences will be more likely take advantage of the rebates.This,however,is not always the case.The main goal of this study was to determine the potential for prioritized incentivization,i.e.,prioritizing incentives that deliver the greatest energy savings per invest-ment through an entire community.It uses a data mining approach that leverages known building and energy characteristics for predicting energy consumption of houses that collectively can be considered representative of all residences within an entire community.From this model,it estimates natural gas consumption and savings,and corresponding implementation costs associated with the adoption of the most impactful energy reduction measures.The resulting savings and cost estimates allow us to develop a sequential energy reduction strategy whereby the most economic measures within the whole utility district are addressed.The results show that an energy reduction of 36%can be achieved at a levelized cost of less than$14 per mmBTU($14,780 per MJ),demonstrating the strong potential of this approach.A corresponding Economic Input–Output Analysis captures the cascading community economic impacts of this strategy.The results show that for the roughly 45,000 single-family residences in the studied region,an initial energy efficiency investment of$26M could result in a total cascading multiplier economic impact of$41M and additional economic impacts of$2.2M for the lifetime of the considered energy efficiency measures.展开更多
China has achieved economic growth while great carbon emissions reduction in recent years. Amid China＇s effort to reduce emissions, the Five-Year Plans have guided and motivated local and foreign forces from the gove...China has achieved economic growth while great carbon emissions reduction in recent years. Amid China＇s effort to reduce emissions, the Five-Year Plans have guided and motivated local and foreign forces from the government, industries, and society to work together. This paper showed that a mediumehigh economic growth gate, industry structure adjustment, and energy structure adjustment, which are guaranteed under the Five-Year Plan, all contribute to energy saving in China. The economy entered a stable growing phase during the 12 th Five-Year Plan, while the economic growth rate declined to 7.8% from 11.2% in the 11 th Five-Year Plan. Simultaneously, the CO2 emissions growth rate declined from8.32%（2009-2012 mean） to 1.82%（2012-2014 mean）. Industrial structure adjustment canceled out nearly one-third of the CO2 emissions caused by economic growth. Under the 13 th Five-Year Plan, China will continue its energy saving efforts on the green development path, with greener quotas, a stricter implementation process, and more key projects.展开更多
The use of energy conservation emission reduction policies to promote industrial restructuring and upgrading and thus facilitate energy conservation and emission reduction is one of the 10 important strategies of envi...The use of energy conservation emission reduction policies to promote industrial restructuring and upgrading and thus facilitate energy conservation and emission reduction is one of the 10 important strategies of environmental management in China. The use of energy conservation emission reduction policies to promote industrial restructuring and upgrading and thus facilitate energy conservation and emission reduction is one of the important strategies of environmental management in China. Based on the systematic collection of 1,195 energy conservation emission reduction policies, we discuss the influence of individual measure and measure synergy of energy conservation and emission reduction policies respectively. The results show that the energy conservation and emission reduction policies have a significant effect on the overall promotion of industrial upgrading. The financial measures and guidance measures have a positive impact;the financial measures and guidance measures have significantly positive effect; however, the administrative measures, fiscal tax measures, and other economic measures do the opposite; the positive effect of the synergy of guidance measures and financial measures is greater than the negative effect of considering only the synergy of fiscal tax measures and other economic measures, and significantly greater than the negative effect of the synergy of administrative measures, fiscal tax measures, and other economic measures. We should strengthen and emphasize the use of the measure that has positive effect on industrial structure restructuring and upgrading individually and synergistically.展开更多
With the startup and execution of new socialistic countryside construction in Heilongjiang Province,the transition from castoff to resource is strengthened in the countryside,aiming at neat appearance of the countrysi...With the startup and execution of new socialistic countryside construction in Heilongjiang Province,the transition from castoff to resource is strengthened in the countryside,aiming at neat appearance of the countryside,clean production and saving energy.People produce biogas and provide the countryside with new energy by means of turning livestock＇s dejection into resources,composting of the plant and animal＇s leavings in the courtyard and even in the factory.It is helpful for the countryside to conserve the energy and reduce emission of the waste.And it also plays an important role in protecting the eco-environment,beautifying homestead and developing the ecological agriculture and so on.The liquid and solid residue in the biogas production can be reused as fertilizer for crops or food for animals after pretreatment,which is propitious to accelerate the development of the circular economy in Heilongjiang Province.展开更多
It's been proved by theory and practice that taxation policy is one of the important means of realizing energy saving and emission reduction. The green taxation system in the Western countries has got better effec...It's been proved by theory and practice that taxation policy is one of the important means of realizing energy saving and emission reduction. The green taxation system in the Western countries has got better effects in energy saving and environmental protection. In the recent years, China has in succession released some taxation policies promoting energy saving and emission reduction, but still has a huge gap to meet the real needs of energy saving and emission reduction. By analyzing China's status quo of the polices of energy saving and emission reduction and drawing upon experiences of the developed countries about green taxation, this paper presents how to perfect ideas of China's energy saving and emission reduction taxation policies: adjusting taxes relevant to green taxation in the current taxation system, such as resource tax, consumer tax, and so on; collecting new environmental tax; perfecting the preferential taxation policies for the energy saving and environmental protection industries.展开更多
At this stage, in the implementation stage of the national sustainable development strategy, energy conservation and consumption reduction are regarded as an important part of the future work of power plants in therma...At this stage, in the implementation stage of the national sustainable development strategy, energy conservation and consumption reduction are regarded as an important part of the future work of power plants in thermal power engineering. By developing energy conservation and consumption reduction, power plants can achieve the goal of sustainable development. Compared with other disciplines, thermal energy and energy technology have higher difficulty and complexity. This is a wide range of knowledge points, including many other subjects to learn. In this discipline, cross-cutting thermal energy and relevant aspects of mechanical engineering are considered as the theoretical basis for energy conversion between mechanical energy and thermal energy. At present, the boiler is the most typical mechanical equipment that converts thermal energy into mechanical energy. The combustion process of a boiler is the conversion process of heat energy and power. On this basis, the practical application of thermal energy and energy technology in energy conservation and consumption reduction is briefly introduced.展开更多
With the continuous development of Chinas national economy, urban heating develops rapidly, and heating companies continue to increase. How to realize the reasonable and efficient production of heating network has bec...With the continuous development of Chinas national economy, urban heating develops rapidly, and heating companies continue to increase. How to realize the reasonable and efficient production of heating network has become an urgent problem. In recent years, with the gradual development of comprehensive environmental management in the country, thermal power companies have used the internet information platform to carry out technical updates in order to improve system management, save energy and reduce consumption, reduce heating costs and pollution. How to make heating users enjoy heat energy most economically and appropriately has become the most prominent problem for current heating users and even social environmental protection requirements. Household heating and metering system has become the leading system of current heating system. If heating users want to control the room temperature through temperature control valves according to their own needs, they must make the whole indoor temperature reach the appropriate temperature. However, people often ignore the heat source of heat exchange station or heating station, and there are also many links that can be optimized by pipeline design and heat source reuse. Users can not only adjust the indoor temperature by adjusting the indoor regulating valve, but also adjust the function of the equipment in the station, thereby playing the role of energy saving and emission reduction. Based on this, this paper studies and analyzes the energy saving and emission reduction of urban heating for reference. Based on this, this paper will analyze the reduction of energy and emissions of urban smart warming.展开更多
Energy conservation and emission reduction is a key link in the building HVAC project. In todays society, environmental problems are becoming more and more serious, especially the pollution problems caused by building...Energy conservation and emission reduction is a key link in the building HVAC project. In todays society, environmental problems are becoming more and more serious, especially the pollution problems caused by building construction. In order to reduce the adverse impact of building pollution on the ecological environment, energy conservation and emission reduction design is becoming more and more widely used in construction engineering construction. HVAC system is the main source of building energy consumption in China. Therefore, the construction unit should keep pace with the times, strengthen the relevant design of energy conservation and emission reduction, timely grasp the development trend, and formulate scientific development plans. At the same time, the designers should constantly improve their overall quality, and make their own contributions to the development of the construction industry. This paper starts with the energy saving and emission reduction design of building HVAC project and analyzes it.展开更多
With the steady improvement of China's economic level, the number of CNG vehicles in China has gradually increased, and the number of CNG parent stations has also shown an increasing trend. However, from the opera...With the steady improvement of China's economic level, the number of CNG vehicles in China has gradually increased, and the number of CNG parent stations has also shown an increasing trend. However, from the operation of CNG parent stations, China still has great limitations in safety management and energy conservation and consumption reduction of CNG parent stations, especially the problem of energy conservation and consumption reduction, and the relevant technical system is not mature. It leads to various problems in the operation of CNG master station. In the specific operation process, some operators’ awareness of energy conservation and consumption reduction is not strong, the management system is not implemented in place, the design is unreasonable, and there are errors in equipment operation, which will cause the energy loss of CNG master station to a certain extent. In order to minimize the energy loss of CNG master station, we should analyze from multiple angles, find out the causes of energy loss, formulate targeted solutions, effectively improve the operation efficiency of CNG master station and control its energy loss. Based on this, this paper gives a detailed overview of the relevant contents of energy saving and consumption reduction of CNG parent station.展开更多
In the production of thermal power plants, strengthening the inspection and maintenance of the boiler tail position can also achieve the effect of energy saving and consumption reduction, realize the replacement frequ...In the production of thermal power plants, strengthening the inspection and maintenance of the boiler tail position can also achieve the effect of energy saving and consumption reduction, realize the replacement frequency of the heating area of the boiler tail, increase the service life, and realize the improvement of the economic benefits of the thermal power plant. The management and maintenance of thermal instruments and automatic control systems is not only a technical issue, but also requires reasonable management measures and scientific management. In real life, problems can be found in time, and the equipment efficiency can be fully exerted, and the basic guarantee for the efficient power production of thermal power plants is provided.展开更多
In the operation process of the power plant, the boiler is the most important equipment, and the boiler operation consumes a lot of energy and increases the burden of the enterprises. In order to comprehensively impro...In the operation process of the power plant, the boiler is the most important equipment, and the boiler operation consumes a lot of energy and increases the burden of the enterprises. In order to comprehensively improve the environmental level and ensure the economic benefits of enterprises, we should advocate the concept of energy conservation in the whole society, and do a good job in the overall economic structural adjustment, so as to promote the rapid economic development. The problem of energy saving and consumption reduction in power plant boilers has attracted wide attention. Through the scientific and reasonable application of energy saving and consumption reduction technology, it can greatly save energy, reduce environmental pollution, but also improve the overall efficiency of power plants, and promote the healthy development of power plants.展开更多
Under the background of rapid economic development, all kinds of environmental problems emerge in an endless stream. Now, China firmly opposes the backward concept of development after governance. It pays more attenti...Under the background of rapid economic development, all kinds of environmental problems emerge in an endless stream. Now, China firmly opposes the backward concept of development after governance. It pays more attention to the development of economy on the basis of environmental protection and promotes the sustainable development of economy. However, environmental protection is not a one-day effort, but a long-term process. Good environmental engineering technical specifications are more effective in improving pollution in various fields. Therefore, enterprises should increase efforts to protect the environment, and it will be implemented in energy conservation and emission reduction. Based on this, this paper focuses on the analysis of the role and impact of environmental engineering technical specifications in energy conservation and emission reduction, to lay a foundation for environmental protection of related projects.展开更多
With the continuous development of the times, the actual demand for chemical products in the current society only increases, so we should pay attention to the use quality and safety quality of chemical products. Consi...With the continuous development of the times, the actual demand for chemical products in the current society only increases, so we should pay attention to the use quality and safety quality of chemical products. Considering the potential safety hazards of chemical products, it is necessary to improve the production process of chemical products, improve the chemical production technology, gradually improve the safety management system of chemical production and manufacturing, and effectively integrate the energy-saving and consumption reduction technology into the chemical production process, so as to give full play to the role of energy-saving and consumption reduction concept.展开更多
With the development of economy and peoples pursuit of high-quality life, the domestic water consumption of residents keeps increasing, while the waste of water resources keeps increasing. Therefore, in order to reduc...With the development of economy and peoples pursuit of high-quality life, the domestic water consumption of residents keeps increasing, while the waste of water resources keeps increasing. Therefore, in order to reduce the waste and loss of resources, the concept of green energy conservation has been successfully applied in the field of architectural design. With the development of environmental protection ideology and energy-saving and emission-reduction policies, energy-saving and emission-reduction design has gradually made certain achievements in building water supply and drainage design. Therefore, it is of great practical and economic significance to strengthen energy-saving and emission-reduction design in building water supply and drainage design and further improve the application efficiency of water resources.展开更多
In manganese electrolysis,electrochemical oscillations and manganese dendrite growth are typical nonlinear phenomena critical for energy consumption reduction.Nonetheless,existing research lacks a deep understanding o...In manganese electrolysis,electrochemical oscillations and manganese dendrite growth are typical nonlinear phenomena critical for energy consumption reduction.Nonetheless,existing research lacks a deep understanding of their underlying mechanisms.In this study,we systematically explored the evolution of anode electrochemical oscillations during manganese electrolysis and designed a square wave circuit to effectively suppress oscillations and dendrite growth while reducing energy consumption.A novel four-dimensional differential equation was introduced to explore the internal dynamic mechanisms of typical nonlinear behaviors.The experimental results showed that while the evolutionary patterns of current and potential oscillation signals were consistent,their waveform directions were opposite.The square wave current effectively suppressed both electrochemical oscillations and the growth of manganese dendrites.Furthermore,compared to direct current electrolysis,the square wave current improved the current efficiency by 3.6%and reduced the energy consumption by 0.32 kW·h·kg^(−1).展开更多
Based on the Burgers equation and Manley-Rowe equation, the derivation about nonlinear interaction of the acoustic waves has been done in this paper. After nonlinear interaction among the low-frequency weak waves and ...Based on the Burgers equation and Manley-Rowe equation, the derivation about nonlinear interaction of the acoustic waves has been done in this paper. After nonlinear interaction among the low-frequency weak waves and the pump wave, the analytical solutions of acoustic waves＇ amplitude in the field are deduced. The relationship between normalized energy of high-frequency and the change of acoustic energy before and after the nonlinear interaction of the acoustic waves is analyzed. The experimental results about the changes of the acoustic energy are presented. The study shows that new frequencies are generated and the energies of the low-frequency are modulated in a long term by the pump waves, which leads the energies of the low-frequency acoustic waves to change in the pulse trend in the process of the nonlinear interaction of the acoustic waves. The increase and decrease of the energies of the low-frequency are observed under certain typical conditions, which lays a foundation for practical engineering applications.展开更多
With the proposal of China’s“Carbon Peaking and Carbon Neutrality”policy,the steel industry faces urgent pressure to transition toward green and low-carbon development.However,the persistent reliance on burden stru...With the proposal of China’s“Carbon Peaking and Carbon Neutrality”policy,the steel industry faces urgent pressure to transition toward green and low-carbon development.However,the persistent reliance on burden structure dominated by sinter and pellet in China has led to the high energy consumption and pollution emissions in process before ironmaking,which has increasingly become a major obstacle to the green development of the steel industry.Lump ore can be directly charged into blast furnaces without high-temperature roasting,making it a more environmentally friendly and cleaner raw material option.The utilization of lump ore in blast furnace not only has obvious economic advantages but also achieves significant energy saving and carbon reduction effects.Therefore,an overview of the application of natural lump ore resources was provided,with a focus on its metallurgical properties and the factors influencing them.It further analyzed and summarized strategies for optimizing lump ore performance,particularly highlighting the advantages and technical challenges associated with preheating treatments.Additionally,the application experience,changes in technical and economic indicators,as well as the effects of energy saving and carbon reduction under the condition of a high ratio of lump ore in actual production were elaborated in detail.The results show that after loading lump ore to blast furnaces,the raw material cost is reduced by approximately 50.88 CNY/t,and the CO_(2)emissions from the production of 1 t pig iron can be reduced by 51.18 kg.展开更多
The reduction of titanomagnetite（TTM） ironsand, which contains 11.41wt% TiO_2 and 55.63wt% total Fe, by graphite was performed using a thermogravimetric analysis system under an argon gas atmosphere at 1423–1623 K....The reduction of titanomagnetite（TTM） ironsand, which contains 11.41wt% TiO_2 and 55.63wt% total Fe, by graphite was performed using a thermogravimetric analysis system under an argon gas atmosphere at 1423–1623 K. The behavior and effects of titanium in TTM ironsand during the reduction process were investigated by means of thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. During the reduction procedure, the titanium concentrated in the slag phase, where the phase transformation followed this sequence： Fe O ＋ FeTiO_3 → Fe_2 TiO_4 → FeTiO_3 → FeTi_2O_5 → TiO_2. The calculated results for the reduction kinetics showed that the carbothermic reduction was controlled by the diffusion of ions through the product layer. Furthermore, the apparent activation energy was 170.35 k J·mol^（-1）.展开更多
As the main link of ground engineering,crude oil gathering and transportation systems require huge energy consumption and complex structures.It is necessary to establish an energy efficiency evaluation system for crud...As the main link of ground engineering,crude oil gathering and transportation systems require huge energy consumption and complex structures.It is necessary to establish an energy efficiency evaluation system for crude oil gathering and transportation systems and identify the energy efficiency gaps.In this paper,the energy efficiency evaluation system of the crude oil gathering and transportation system in an oilfield in western China is established.Combined with the big data analysis method,the GA-BP neural network is used to establish the energy efficiency index prediction model for crude oil gathering and transportation systems.The comprehensive energy consumption,gas consumption,power consumption,energy utilization rate,heat utilization rate,and power utilization rate of crude oil gathering and transportation systems are predicted.Considering the efficiency and unit consumption index of the crude oil gathering and transportation system,the energy efficiency evaluation system of the crude oil gathering and transportation system is established based on a game theory combined weighting method and TOPSIS evaluation method,and the subjective weight is determined by the triangular fuzzy analytic hierarchy process.The entropy weight method determines the objective weight,and the combined weight of game theory combines subjectivity with objectivity to comprehensively evaluate the comprehensive energy efficiency of crude oil gathering and transportation systems and their subsystems.Finally,the weak links in energy utilization are identified,and energy conservation and consumption reduction are improved.The above research provides technical support for the green,efficient and intelligent development of crude oil gathering and transportation systems.展开更多
文摘A major roadblock in achieving substantial building energy reduction is the low performance of old buildings that account for a significant portion of the building energy consumption.Finding low-cost energy retrofit solutions that do not disrupt occupants’daily life during the retrofitting is the key to successful building energy retrofit initiatives.In this paper,a novel and low-cost exterior wall retrofitting solution is introduced,and its performance in reducing space cooling load was quantitatively evaluated to demonstrate its feasibility and effectiveness.The primary goal of this paper is to provide a quantitative assessment of the cooling-energy savings potential by using the proposed new wall system.The intended retrofitting targets are the large amount of existing cavity-wall buildings located in hot climate regions.The quantification of the before-after heat-flux reduction was conducted through a 3-dimensional steady-state low turbulence computational fluid dynamics(CFD)model,which is validated by benchmarking its prediction against the published experimental case results.The outcomes of the investigation suggest that this simple low-cost solution has great potentials in reducing buildings’summer cooling load in hot climate regions.The applicability of this solution is not limited to retrofitting existing buildings.New energy-efficient building designs can also adopt this solution in their envelope systems.
文摘Many U.S.utilities incentivize residential energy reduction through rebates,often in response to state mandates for energy reduction or from a desire to reduce demand to mitigate the need to grow generating assets.The assumption built into incentive programs is that the least efficient residences will be more likely take advantage of the rebates.This,however,is not always the case.The main goal of this study was to determine the potential for prioritized incentivization,i.e.,prioritizing incentives that deliver the greatest energy savings per invest-ment through an entire community.It uses a data mining approach that leverages known building and energy characteristics for predicting energy consumption of houses that collectively can be considered representative of all residences within an entire community.From this model,it estimates natural gas consumption and savings,and corresponding implementation costs associated with the adoption of the most impactful energy reduction measures.The resulting savings and cost estimates allow us to develop a sequential energy reduction strategy whereby the most economic measures within the whole utility district are addressed.The results show that an energy reduction of 36%can be achieved at a levelized cost of less than$14 per mmBTU($14,780 per MJ),demonstrating the strong potential of this approach.A corresponding Economic Input–Output Analysis captures the cascading community economic impacts of this strategy.The results show that for the roughly 45,000 single-family residences in the studied region,an initial energy efficiency investment of$26M could result in a total cascading multiplier economic impact of$41M and additional economic impacts of$2.2M for the lifetime of the considered energy efficiency measures.
基金supported by the "study of Green space management system and protection" of mechanism Economic Development Research Center of State Forestry Administration (ZDWT-2014-3)
文摘China has achieved economic growth while great carbon emissions reduction in recent years. Amid China＇s effort to reduce emissions, the Five-Year Plans have guided and motivated local and foreign forces from the government, industries, and society to work together. This paper showed that a mediumehigh economic growth gate, industry structure adjustment, and energy structure adjustment, which are guaranteed under the Five-Year Plan, all contribute to energy saving in China. The economy entered a stable growing phase during the 12 th Five-Year Plan, while the economic growth rate declined to 7.8% from 11.2% in the 11 th Five-Year Plan. Simultaneously, the CO2 emissions growth rate declined from8.32%（2009-2012 mean） to 1.82%（2012-2014 mean）. Industrial structure adjustment canceled out nearly one-third of the CO2 emissions caused by economic growth. Under the 13 th Five-Year Plan, China will continue its energy saving efforts on the green development path, with greener quotas, a stricter implementation process, and more key projects.
文摘The use of energy conservation emission reduction policies to promote industrial restructuring and upgrading and thus facilitate energy conservation and emission reduction is one of the 10 important strategies of environmental management in China. The use of energy conservation emission reduction policies to promote industrial restructuring and upgrading and thus facilitate energy conservation and emission reduction is one of the important strategies of environmental management in China. Based on the systematic collection of 1,195 energy conservation emission reduction policies, we discuss the influence of individual measure and measure synergy of energy conservation and emission reduction policies respectively. The results show that the energy conservation and emission reduction policies have a significant effect on the overall promotion of industrial upgrading. The financial measures and guidance measures have a positive impact;the financial measures and guidance measures have significantly positive effect; however, the administrative measures, fiscal tax measures, and other economic measures do the opposite; the positive effect of the synergy of guidance measures and financial measures is greater than the negative effect of considering only the synergy of fiscal tax measures and other economic measures, and significantly greater than the negative effect of the synergy of administrative measures, fiscal tax measures, and other economic measures. We should strengthen and emphasize the use of the measure that has positive effect on industrial structure restructuring and upgrading individually and synergistically.
基金Supported by Foundation of Heilongjiang Province Educational Committee (11551056)Scientific Fund of Heilongjiang Province for Youth (QC2009C40)+1 种基金Fund of Harbin City Innovative Talent (2009RFQXN096)Heilongjiang Province Postdoctoral Science Foundation
文摘With the startup and execution of new socialistic countryside construction in Heilongjiang Province,the transition from castoff to resource is strengthened in the countryside,aiming at neat appearance of the countryside,clean production and saving energy.People produce biogas and provide the countryside with new energy by means of turning livestock＇s dejection into resources,composting of the plant and animal＇s leavings in the courtyard and even in the factory.It is helpful for the countryside to conserve the energy and reduce emission of the waste.And it also plays an important role in protecting the eco-environment,beautifying homestead and developing the ecological agriculture and so on.The liquid and solid residue in the biogas production can be reused as fertilizer for crops or food for animals after pretreatment,which is propitious to accelerate the development of the circular economy in Heilongjiang Province.
基金supported by the Key Research Project of Shandong Social Science Planning(Grant No. 07JDB071)
文摘It's been proved by theory and practice that taxation policy is one of the important means of realizing energy saving and emission reduction. The green taxation system in the Western countries has got better effects in energy saving and environmental protection. In the recent years, China has in succession released some taxation policies promoting energy saving and emission reduction, but still has a huge gap to meet the real needs of energy saving and emission reduction. By analyzing China's status quo of the polices of energy saving and emission reduction and drawing upon experiences of the developed countries about green taxation, this paper presents how to perfect ideas of China's energy saving and emission reduction taxation policies: adjusting taxes relevant to green taxation in the current taxation system, such as resource tax, consumer tax, and so on; collecting new environmental tax; perfecting the preferential taxation policies for the energy saving and environmental protection industries.
文摘At this stage, in the implementation stage of the national sustainable development strategy, energy conservation and consumption reduction are regarded as an important part of the future work of power plants in thermal power engineering. By developing energy conservation and consumption reduction, power plants can achieve the goal of sustainable development. Compared with other disciplines, thermal energy and energy technology have higher difficulty and complexity. This is a wide range of knowledge points, including many other subjects to learn. In this discipline, cross-cutting thermal energy and relevant aspects of mechanical engineering are considered as the theoretical basis for energy conversion between mechanical energy and thermal energy. At present, the boiler is the most typical mechanical equipment that converts thermal energy into mechanical energy. The combustion process of a boiler is the conversion process of heat energy and power. On this basis, the practical application of thermal energy and energy technology in energy conservation and consumption reduction is briefly introduced.
文摘With the continuous development of Chinas national economy, urban heating develops rapidly, and heating companies continue to increase. How to realize the reasonable and efficient production of heating network has become an urgent problem. In recent years, with the gradual development of comprehensive environmental management in the country, thermal power companies have used the internet information platform to carry out technical updates in order to improve system management, save energy and reduce consumption, reduce heating costs and pollution. How to make heating users enjoy heat energy most economically and appropriately has become the most prominent problem for current heating users and even social environmental protection requirements. Household heating and metering system has become the leading system of current heating system. If heating users want to control the room temperature through temperature control valves according to their own needs, they must make the whole indoor temperature reach the appropriate temperature. However, people often ignore the heat source of heat exchange station or heating station, and there are also many links that can be optimized by pipeline design and heat source reuse. Users can not only adjust the indoor temperature by adjusting the indoor regulating valve, but also adjust the function of the equipment in the station, thereby playing the role of energy saving and emission reduction. Based on this, this paper studies and analyzes the energy saving and emission reduction of urban heating for reference. Based on this, this paper will analyze the reduction of energy and emissions of urban smart warming.
文摘Energy conservation and emission reduction is a key link in the building HVAC project. In todays society, environmental problems are becoming more and more serious, especially the pollution problems caused by building construction. In order to reduce the adverse impact of building pollution on the ecological environment, energy conservation and emission reduction design is becoming more and more widely used in construction engineering construction. HVAC system is the main source of building energy consumption in China. Therefore, the construction unit should keep pace with the times, strengthen the relevant design of energy conservation and emission reduction, timely grasp the development trend, and formulate scientific development plans. At the same time, the designers should constantly improve their overall quality, and make their own contributions to the development of the construction industry. This paper starts with the energy saving and emission reduction design of building HVAC project and analyzes it.
文摘With the steady improvement of China's economic level, the number of CNG vehicles in China has gradually increased, and the number of CNG parent stations has also shown an increasing trend. However, from the operation of CNG parent stations, China still has great limitations in safety management and energy conservation and consumption reduction of CNG parent stations, especially the problem of energy conservation and consumption reduction, and the relevant technical system is not mature. It leads to various problems in the operation of CNG master station. In the specific operation process, some operators’ awareness of energy conservation and consumption reduction is not strong, the management system is not implemented in place, the design is unreasonable, and there are errors in equipment operation, which will cause the energy loss of CNG master station to a certain extent. In order to minimize the energy loss of CNG master station, we should analyze from multiple angles, find out the causes of energy loss, formulate targeted solutions, effectively improve the operation efficiency of CNG master station and control its energy loss. Based on this, this paper gives a detailed overview of the relevant contents of energy saving and consumption reduction of CNG parent station.
文摘In the production of thermal power plants, strengthening the inspection and maintenance of the boiler tail position can also achieve the effect of energy saving and consumption reduction, realize the replacement frequency of the heating area of the boiler tail, increase the service life, and realize the improvement of the economic benefits of the thermal power plant. The management and maintenance of thermal instruments and automatic control systems is not only a technical issue, but also requires reasonable management measures and scientific management. In real life, problems can be found in time, and the equipment efficiency can be fully exerted, and the basic guarantee for the efficient power production of thermal power plants is provided.
文摘In the operation process of the power plant, the boiler is the most important equipment, and the boiler operation consumes a lot of energy and increases the burden of the enterprises. In order to comprehensively improve the environmental level and ensure the economic benefits of enterprises, we should advocate the concept of energy conservation in the whole society, and do a good job in the overall economic structural adjustment, so as to promote the rapid economic development. The problem of energy saving and consumption reduction in power plant boilers has attracted wide attention. Through the scientific and reasonable application of energy saving and consumption reduction technology, it can greatly save energy, reduce environmental pollution, but also improve the overall efficiency of power plants, and promote the healthy development of power plants.
文摘Under the background of rapid economic development, all kinds of environmental problems emerge in an endless stream. Now, China firmly opposes the backward concept of development after governance. It pays more attention to the development of economy on the basis of environmental protection and promotes the sustainable development of economy. However, environmental protection is not a one-day effort, but a long-term process. Good environmental engineering technical specifications are more effective in improving pollution in various fields. Therefore, enterprises should increase efforts to protect the environment, and it will be implemented in energy conservation and emission reduction. Based on this, this paper focuses on the analysis of the role and impact of environmental engineering technical specifications in energy conservation and emission reduction, to lay a foundation for environmental protection of related projects.
文摘With the continuous development of the times, the actual demand for chemical products in the current society only increases, so we should pay attention to the use quality and safety quality of chemical products. Considering the potential safety hazards of chemical products, it is necessary to improve the production process of chemical products, improve the chemical production technology, gradually improve the safety management system of chemical production and manufacturing, and effectively integrate the energy-saving and consumption reduction technology into the chemical production process, so as to give full play to the role of energy-saving and consumption reduction concept.
文摘With the development of economy and peoples pursuit of high-quality life, the domestic water consumption of residents keeps increasing, while the waste of water resources keeps increasing. Therefore, in order to reduce the waste and loss of resources, the concept of green energy conservation has been successfully applied in the field of architectural design. With the development of environmental protection ideology and energy-saving and emission-reduction policies, energy-saving and emission-reduction design has gradually made certain achievements in building water supply and drainage design. Therefore, it is of great practical and economic significance to strengthen energy-saving and emission-reduction design in building water supply and drainage design and further improve the application efficiency of water resources.
基金support from the Fundamental Research Funds for the Central Universities(2022CDJQY-005,2024CDJXY010)the Guangxi Science and Technology Program(AB24010229)is greatly acknowledged.
文摘In manganese electrolysis,electrochemical oscillations and manganese dendrite growth are typical nonlinear phenomena critical for energy consumption reduction.Nonetheless,existing research lacks a deep understanding of their underlying mechanisms.In this study,we systematically explored the evolution of anode electrochemical oscillations during manganese electrolysis and designed a square wave circuit to effectively suppress oscillations and dendrite growth while reducing energy consumption.A novel four-dimensional differential equation was introduced to explore the internal dynamic mechanisms of typical nonlinear behaviors.The experimental results showed that while the evolutionary patterns of current and potential oscillation signals were consistent,their waveform directions were opposite.The square wave current effectively suppressed both electrochemical oscillations and the growth of manganese dendrites.Furthermore,compared to direct current electrolysis,the square wave current improved the current efficiency by 3.6%and reduced the energy consumption by 0.32 kW·h·kg^(−1).
基金financially supported by the Scientific Research Fund of Heilongjiang Provincial Education Department(Grant No.12541132)the Natural Science Youth Foundation of Heilongjiang Province of China(Grant No.QC2015082)
文摘Based on the Burgers equation and Manley-Rowe equation, the derivation about nonlinear interaction of the acoustic waves has been done in this paper. After nonlinear interaction among the low-frequency weak waves and the pump wave, the analytical solutions of acoustic waves＇ amplitude in the field are deduced. The relationship between normalized energy of high-frequency and the change of acoustic energy before and after the nonlinear interaction of the acoustic waves is analyzed. The experimental results about the changes of the acoustic energy are presented. The study shows that new frequencies are generated and the energies of the low-frequency are modulated in a long term by the pump waves, which leads the energies of the low-frequency acoustic waves to change in the pulse trend in the process of the nonlinear interaction of the acoustic waves. The increase and decrease of the energies of the low-frequency are observed under certain typical conditions, which lays a foundation for practical engineering applications.
基金support by National Natural Science Foundation of China(52474342).
文摘With the proposal of China’s“Carbon Peaking and Carbon Neutrality”policy,the steel industry faces urgent pressure to transition toward green and low-carbon development.However,the persistent reliance on burden structure dominated by sinter and pellet in China has led to the high energy consumption and pollution emissions in process before ironmaking,which has increasingly become a major obstacle to the green development of the steel industry.Lump ore can be directly charged into blast furnaces without high-temperature roasting,making it a more environmentally friendly and cleaner raw material option.The utilization of lump ore in blast furnace not only has obvious economic advantages but also achieves significant energy saving and carbon reduction effects.Therefore,an overview of the application of natural lump ore resources was provided,with a focus on its metallurgical properties and the factors influencing them.It further analyzed and summarized strategies for optimizing lump ore performance,particularly highlighting the advantages and technical challenges associated with preheating treatments.Additionally,the application experience,changes in technical and economic indicators,as well as the effects of energy saving and carbon reduction under the condition of a high ratio of lump ore in actual production were elaborated in detail.The results show that after loading lump ore to blast furnaces,the raw material cost is reduced by approximately 50.88 CNY/t,and the CO_(2)emissions from the production of 1 t pig iron can be reduced by 51.18 kg.
基金financially supported by National Basic Research Program of China(No.2012CB720400)the National Natural Science Foundation of China(No.51504216)
文摘The reduction of titanomagnetite（TTM） ironsand, which contains 11.41wt% TiO_2 and 55.63wt% total Fe, by graphite was performed using a thermogravimetric analysis system under an argon gas atmosphere at 1423–1623 K. The behavior and effects of titanium in TTM ironsand during the reduction process were investigated by means of thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. During the reduction procedure, the titanium concentrated in the slag phase, where the phase transformation followed this sequence： Fe O ＋ FeTiO_3 → Fe_2 TiO_4 → FeTiO_3 → FeTi_2O_5 → TiO_2. The calculated results for the reduction kinetics showed that the carbothermic reduction was controlled by the diffusion of ions through the product layer. Furthermore, the apparent activation energy was 170.35 k J·mol^（-1）.
基金This work was financially supported by the National Natural Science Foundation of China(52074089 and 52104064)Natural Science Foundation of Heilongjiang Province of China(LH2019E019).
文摘As the main link of ground engineering,crude oil gathering and transportation systems require huge energy consumption and complex structures.It is necessary to establish an energy efficiency evaluation system for crude oil gathering and transportation systems and identify the energy efficiency gaps.In this paper,the energy efficiency evaluation system of the crude oil gathering and transportation system in an oilfield in western China is established.Combined with the big data analysis method,the GA-BP neural network is used to establish the energy efficiency index prediction model for crude oil gathering and transportation systems.The comprehensive energy consumption,gas consumption,power consumption,energy utilization rate,heat utilization rate,and power utilization rate of crude oil gathering and transportation systems are predicted.Considering the efficiency and unit consumption index of the crude oil gathering and transportation system,the energy efficiency evaluation system of the crude oil gathering and transportation system is established based on a game theory combined weighting method and TOPSIS evaluation method,and the subjective weight is determined by the triangular fuzzy analytic hierarchy process.The entropy weight method determines the objective weight,and the combined weight of game theory combines subjectivity with objectivity to comprehensively evaluate the comprehensive energy efficiency of crude oil gathering and transportation systems and their subsystems.Finally,the weak links in energy utilization are identified,and energy conservation and consumption reduction are improved.The above research provides technical support for the green,efficient and intelligent development of crude oil gathering and transportation systems.
