Question 2: The significance of energy conservation and emission reduction Why do we do this? Because of the rapid economic growth and great achievements in various constructions, we have also paid a huge price for the destruction of resources and the environment. The contradiction between the two has become increasingly acute, and the masses have reacted strongly to environmental pollution. This situation is directly related to the unreasonable economic structure and extensive growth mode. If we don't speed up the adjustment of economic structure and change the growth mode, resources can't support it, the environment can't accommodate it, the society can't afford it, and economic development can't be sustainable. Only by adhering to economical development, clean development and safe development can we achieve sound and rapid economic development. At the same time, greenhouse gas emissions lead to global warming, which has aroused widespread concern in the international community. Further strengthening energy conservation and emission reduction is also an urgent need to cope with global climate change.
Question 3: The significance of energy conservation and emission reduction refers to reducing energy waste and reducing exhaust emissions. China's "Eleventh Five-Year Plan" outlines that during the "Eleventh Five-Year Plan" period, the energy consumption per unit of GDP will be reduced by about 20%, and the total discharge of major pollutants will be reduced by 10%. This is an important measure to implement Scientific Outlook on Development and build a harmonious socialist society. It is an inevitable choice for building a resource-saving and environment-friendly society; It is the only way to promote economic restructuring and change the growth mode; It is an inevitable requirement for safeguarding the long-term interests of the Chinese nation.
Energy saving and emission reduction situation
With the rapid development of economy and society, the negative effects brought by the excessive pursuit of satisfaction and development speed have been ignored or weakened, which has greatly satisfied their material desires and laid many hidden dangers for their future development. As time goes on, these problems become more and more serious.
Exposure is becoming more and more obvious until it threatens human survival, such as greenhouse effect and water pollution. To a certain extent, these problems are attributed to people's one-sided understanding of development, thinking that as long as the economy develops, all problems can be solved patiently, ignoring environmental protection. In fact, only the development of science can continuously solve the problems faced by mankind. This is one of them.
Energy saving and emission reduction are not only problems caused by environmental pollution such as enterprise production and automobile exhaust emission. The main body of society is people, and the main body of energy conservation and emission reduction must also be people. Energy conservation and emission reduction must start from everyone. Due to personal ignorance or neglect, water, electricity, etc. It's all a waste, and cars smoke mercilessly. It is not that no one has noticed the harm caused by environmental deterioration, but that most people think that the problem of environmental pollution is far away from them, not their own business, nor is it a waste of their money. Some even think they have money and don't care about waste. As we all know, water, electricity and gas are the same resource of human beings, and the waste now will bring endless hidden dangers to future generations. Therefore, everyone is responsible for energy conservation and emission reduction, and everyone needs to participate. This is the second one.
At present, the situation facing the goal of energy conservation and emission reduction is very severe. Since last year, the whole country has been strengthening energy conservation and emission reduction. The State Council issued a decision to strengthen energy conservation and formulated a series of policies and measures to promote energy conservation and emission reduction. Various regions and departments have made work arrangements one after another, and positive progress has been made in energy conservation and emission reduction. However, last year, the country failed to achieve the energy conservation and emission reduction targets set at the beginning of the year, which increased the difficulty of energy conservation and emission reduction in the next four years after the Eleventh Five-Year Plan. More seriously, in the first quarter of this year, industries, especially those with high energy consumption and high pollution, grew too fast. Six major industries, such as electric power, steel, nonferrous metals, building materials, petroleum processing and chemical industry, which accounted for nearly 70% of the national industrial energy consumption and sulfur dioxide emissions, increased by 20.6%, 6.6 percentage points faster than the same period last year. At the same time, there are still some problems in all aspects of work, such as inadequate understanding, unclear responsibilities, inadequate measures, imperfect policies, inadequate investment and poor coordination. If this situation is not reversed in time, not only will it be difficult to make significant progress in energy conservation and emission reduction this year, but also the overall goal of energy conservation and emission reduction in the Eleventh Five-Year Plan will be difficult to achieve.
Significance of energy saving and emission reduction
China's economy has grown rapidly, and great achievements have been made in various constructions, but at the same time, it has also paid a huge price in resources and environment. The contradiction between economic development and resources and environment is increasingly acute, and the masses have a strong reaction to environmental pollution. This situation is directly related to the unreasonable economic structure and extensive growth mode. If we don't speed up the adjustment of economic structure and change the growth mode, resources can't support it, the environment can't accommodate it, the society can't afford it, and economic development can't be sustainable. Only by adhering to economical development, clean development and safe development can we achieve sound and rapid economic development. At the same time, greenhouse gas emissions lead to global warming, which has aroused widespread concern in the international community. Further strengthening energy conservation and emission reduction is also an urgent need to cope with global climate change, and it is our responsibility.
Question 4: What is the significance of energy saving for enterprises, for reference only?
First of all, energy conservation is an inevitable choice to ensure China's energy security and economic development. The per capita possession of major mineral resources in China is less than half of the world average. Domestic development of production can not meet the needs of economic and social development, and the contradiction between supply and demand is increasingly prominent. Taking oil as an example, with the acceleration of industrialization and urbanization, the demand will show a strong growth trend. If active and effective measures are not taken, China's dependence on the international oil market will reach more than 50% by 2020. On the other hand, China's energy consumption level is not high, and the per capita electricity consumption is only equivalent to that of developed countries110. To solve the problem of resource strategy, we must adopt the strategy of giving priority to energy conservation, especially putting saving and replacing oil in a prominent position, which is an important strategic measure to ensure the national economic security and long-term development. [2]
Secondly, energy conservation is an important way to protect the environment and implement the strategy of sustainable development. China is one of the few countries in the world with coal as the main energy source, and it is also the largest coal consumer in the world. Sulfur dioxide and soot emissions from combustion account for more than 80% of the total emissions, which leads to serious environmental pollution and intensified ecological damage. The annual emission of sulfur dioxide is nearly 20 million tons, and the area of acid rain has accounted for 30% of the land area. Only13 of the cities meet the air quality standards, and 70% of the river sections flowing through the cities are polluted to varying degrees. Therefore, it has become an urgent problem for the sustainable development of China to curb the deterioration of the ecological environment and improve the environmental quality as soon as possible.
Third, energy conservation is an important measure to change the development mode and enhance the competitiveness of enterprises. Under the economic globalization, China enterprises will face more and more market competition pressure, especially the impact of the international financial crisis on the development mode of export-oriented economy since 2008 once again warns us that only by changing the development mode, taking the connotative development path, vigorously saving energy and reducing consumption, reducing costs and improving efficiency can we enhance the international competitiveness of enterprises. At present, the consumption of energy and raw materials for industrial products in China accounts for about 75% of the production cost of enterprises. If 1% can be reduced, the benefit of 1000 billion yuan can be realized. It can be seen that energy conservation plays a decisive role in reducing costs, improving efficiency and enhancing competitiveness of enterprises.
Finally, energy conservation is an important means to build a harmonious society and ecological civilization. A study by the Worldwatch Institute in the United States shows that the employment opportunities created by unit energy investment are at least twice as many as those created by oil and gas development and power generation investment. New energy development, R&D, energy-saving technology and equipment manufacturing, energy-saving management and services can increase many jobs. Energy conservation is also conducive to creating a healthy and high-quality lifestyle. The popularization of household appliances, such as ecological residence, green lighting and new energy-saving air conditioners, will form the living conditions of high-quality well-off life and the living environment that reflects modern civilization. Through publicity, education and economic incentives, promote the development of circular economy, implement mandatory "green" certification and energy efficiency standards and signs for energy-saving products, guide and motivate consumers to buy green goods, thus cultivating frugal public morality and helping to form a sustainable lifestyle and consumption pattern.
Question 5: briefly talk about your understanding of the company's energy-saving activities, such as whether it is necessary and why. I would like to ask two ways for enterprises to increase economic benefits, one is to open up sources and the other is to cut costs, so energy-saving and consumption-reducing activities are necessary and far-reaching. If every employee has developed the habit of saving energy and reducing consumption, and the enterprise has formed a system of saving energy and reducing consumption, then the development and efficiency of the enterprise is not empty talk.
Question 6: The concept of energy conservation and environmental protection is a necessary condition for an enterprise to survive. I have to say that energy conservation and environmental protection are very important for an enterprise. If an enterprise wants to be bigger and stronger, the development concept of energy saving and environmental protection is essential. We know that green has already become a new key word for development, and the whole world attaches great importance to it. The state advocates energy conservation, emission reduction and environmental protection. Moreover, the earth we live in also requires us to protect the earth and benefit future generations. Therefore, energy conservation and environmental protection are the only way for an enterprise to develop and succeed. On the one hand, we can learn from Haier enterprises, which have done a good job in energy conservation and environmental protection.
Question 7: The greenhouse effect leads to the necessity of "energy saving and emission reduction";
Greenhouse effect (Spanish) refers to the heat insulation effect caused by the lack of heat exchange between the enclosed space transmitting sunlight and the outside world, that is, the short-wave radiation of the sun can penetrate into the ground through the atmosphere, but the long and short radiation released after the ground warms is absorbed by substances such as carbon dioxide in the atmosphere, thus producing the effect of atmospheric warming. Carbon dioxide in the atmosphere is like a thick layer of glass, which makes the earth a big greenhouse. It is estimated that if there is no atmosphere, the average surface temperature will drop to -23℃, while the actual average surface temperature is 15℃, which means that the greenhouse effect will increase the surface temperature by 38℃.
The greenhouse effect, also known as the "greenhouse effect", is a common name for the atmospheric heat preservation effect. The increase of carbon dioxide concentration in the atmosphere prevents the loss of heat on the earth and makes the earth feel the rise of temperature. This is the famous "greenhouse effect". Destroy the normal relationship between the atmosphere and the ground, absorb the infrared radiation released by the earth, just like a "greenhouse", and the gas that raises the temperature of the earth is called "greenhouse gas". Carbon dioxide is the largest greenhouse gas, accounting for about 0.03% of the total capacity of the atmosphere. Many other trace gases also produce greenhouse effect, some of which are stronger than carbon dioxide.
The atmosphere can make the short-wave radiation of the sun reach the ground, but the long-wave radiation emitted by the ground is absorbed by the atmosphere, which raises the temperature of the ground and the lower atmosphere. Because its function is similar to the greenhouse for cultivating crops, it is named the greenhouse effect. If this effect does not exist in the atmosphere, the surface temperature will drop by about 330℃ or more. On the other hand, if the greenhouse effect continues to strengthen, the global temperature will continue to rise year by year. Since the industrial revolution, carbon dioxide and other heat-absorbing greenhouse gases emitted into the atmosphere by human beings have increased year by year, and the greenhouse effect of the atmosphere has also been enhanced, which has caused a series of serious problems such as global warming and attracted the attention of all countries in the world.
In addition to carbon dioxide, methane, ozone, chlorofluorocarbons, water vapor and other gases that play an important role in the greenhouse effect. With the rapid increase of population and the rapid development of industry, the carbon dioxide discharged into the atmosphere has also increased accordingly; Because of a large number of deforestation, the carbon dioxide that forests should absorb in the atmosphere has not been absorbed, and the greenhouse effect has been continuously enhanced because of the gradual increase of carbon dioxide. According to analysis, in the past two hundred years, the concentration of carbon dioxide has increased by 25%, and the average temperature of the earth has increased by 0.5℃. It is predicted that by the middle of the next century, the average temperature on the earth's surface will rise by 1.5-4.5℃, especially in the middle and high latitudes.
The air contains carbon dioxide, which has remained basically unchanged for a long time in the past. This is because the carbon dioxide in the atmosphere is always in a dynamic equilibrium state of "increasing while consuming". 80% of carbon dioxide in the atmosphere comes from the breathing of people, animals and plants, and 20% comes from the burning of fuel. 75% of carbon dioxide scattered in the atmosphere is absorbed by groundwater and atmospheric precipitation such as oceans, lakes and rivers and dissolved in water. Another 5% of carbon dioxide is converted into organic matter through plant photosynthesis and stored. This is why carbon dioxide accounts for 0.03% (volume fraction) of air composition for many years.
However, in recent decades, due to the rapid increase of population and the rapid development of industry, the carbon dioxide produced by breathing and burning coal, oil and natural gas has far exceeded the past level. On the other hand, due to deforestation, a large number of farmland has been built into cities and factories, destroying vegetation and reducing the conditions for converting carbon dioxide into organic matter. In addition, the surface water area is gradually shrinking, the precipitation is greatly reduced, the conditions for absorbing and dissolving carbon dioxide are reduced, the dynamic balance of carbon dioxide generation and transformation is destroyed, and the carbon dioxide content in the atmosphere is increased year by year. The increase of carbon dioxide content in the air changed the temperature of the earth.
In the air, nitrogen and oxygen account for the highest proportion, and both of them can transmit visible light and infrared radiation. But carbon dioxide can't. It cannot penetrate infrared radiation. Therefore, carbon dioxide can prevent the surface heat from radiating into space and has the function of regulating the earth's temperature. Without carbon dioxide, the average annual temperature of the earth would be 20℃ lower than it is now. But if the carbon dioxide content is too high, it will make the earth seem to be in a pot, and the temperature will gradually rise, forming a "greenhouse effect." Besides carbon dioxide, there are other gases that can also cause the greenhouse effect. Among them, carbon dioxide accounts for about 75%, chlorofluoroalkanes account for about 15% ~ 20%, and there are more than 30 kinds of methane and nitric oxide.
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Question 8: What do you mean by saving energy and reducing consumption? Saving energy and reducing consumption, in short, means saving energy and reducing consumption, and getting the maximum economic benefit with the least investment.
Question 9: What are the benefits of energy conservation and emission reduction? To extract! !
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1. Technical and economic countermeasures for carbon dioxide emission reduction of power generation enterprises
Zhang Jinzhu literature comes from: CAJ Download PDF Northeast Electric Power Technology Download, No.06, 2002.
Through the comparison of cost and effect (O-fly emission reduction), the advantages and disadvantages of emission reduction measures are analyzed and judged. Emission reduction technologies are generally divided into specialized emission reduction technologies. There are three categories: auxiliary emission reduction technologies and alternative technologies. Different technology categories have different CO2 emission reductions. The cost index of emission reduction technology is: based on the current CO2 emissions, in which CQZ emissions are reduced. ...
Number of citations: 1 literature citation-similar literature-similar literature
2. Research on energy efficiency standard of steam compression central air conditioning unit.
Lu Wei's literature comes from: CAJ 2004 Tianjin University doctoral thesis download, online reading chapter download, paging download.
It is inevitable to fulfill the obligation of reducing greenhouse gas emissions in the future. During the Tenth Five-Year Plan period, China's energy development strategy pointed out that it is necessary to improve energy efficiency, and strive to improve energy production and consumption efficiency while insisting on rational utilization of resources, so as to promote economic growth and improve people's quality of life. At the same time, in the process of energy production and consumption, we should pay attention to environmental quality requirements and realize efficient use of energy. ...
Citation times: 4 references-similar documents-similar documents.
3. Contribution and function of rural renewable energy construction to carbon dioxide emission reduction
Wang Wenxian comes from: Download PDF Download, No.0 1, Jiangxi Energy 2002.
Number of citations: 5 references-similar documents-similar documents.
4. Boiler and CO2 emission reduction
The literature comes from: 0 1 download PDF industrial boiler download in 2004.
There are no specific emission reduction targets, but efforts should be made to reduce emissions; The CO2 emission reduction of 38 developed countries has been clarified: by 20 12, the CO2 emission of European countries will be 8% lower than that of 1990, 7% lower than that of the United States, 6% lower than that of Japan, and 5% lower than that of other developed countries and Eastern Europe. ...
Number of citations: 1 literature citation-similar literature-similar literature
5. Greenhouse gas emission reduction and China energy development strategy in 2 1 century.
Wei Dong, Ma Yitai and Lv Canren's literature comes from: Energy Science and Technology 200 1 CAJ Download PDF Download.
By reasonably selecting projects with lower emission reduction costs, the global total emission reduction costs can be greatly reduced under the premise of achieving the same emission reduction targets. Fig. 3 is a schematic diagram of supply curves of industrial CO2 emission reduction in several groups of countries [5]. As can be seen from the picture, China and? ...
Citation times: 2 references-similar documents-similar documents.
6. Cost management of thermal power generation enterprises
Li Jianfei's literature comes from: CAJ download, online reading, chapter download and page download of master thesis of North China Electric Power University (Beijing) in 2006.
The fuels of thermal power generation enterprises are mainly coal and oil, and the fuel cost accounts for about 50%-80% of the total cost of thermal power generation enterprises. As shown in Figure 2- 1:2006 54 38+0-2005, the fuel cost of Guohua Panshan Power Plant accounted for 44%-59% of the total cost, and the depreciation expense accounted for 19%-28%. ...
Citation times: 0 literature citation-similar literature-similar literature.
7. Talking about the new concept of building energy saving.
Long Weiding's literature comes from: HVAC 1999 0 1 CAJ Download PDF Download.
The Protocol stipulates the obligations of all parties in 20 10 ... >; & gt