basics:energy_and_ecology:greenhouse_effect_and_climate_protection
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basics:energy_and_ecology:greenhouse_effect_and_climate_protection [2015/09/12 14:17] – [How smart is the striving for high energy consumption?] wfeist | basics:energy_and_ecology:greenhouse_effect_and_climate_protection [2020/08/09 15:32] (current) – [And how can we put that into effect?] wfeist | ||
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- | The Passive House Institute doesn' | + | The Passive House Institute doesn' |
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** Climate change is mainly caused by fossil energy consumption.**\\ | ** Climate change is mainly caused by fossil energy consumption.**\\ | ||
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- | About 85 % of the worlwide energy consumption today is covered by crude oil, natural gas and coal. These fuels are also known as " | + | About 80 % of the worlwide energy consumption today(2020; 2008 it was still 85%) is covered by crude oil, natural gas and coal. These fuels are also known as " |
These combustion gases are mostly (over 99%) given off into the atmosphere. The water doesn' | These combustion gases are mostly (over 99%) given off into the atmosphere. The water doesn' | ||
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> **CO< | > **CO< | ||
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- | |{{ : | + | |{{ : |
|//**The increase of the CO< | |//**The increase of the CO< | ||
- | Since 1900 the concentration of CO< | + | Since 1900 the concentration of CO< |
//||\\ | //||\\ | ||
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- | The most important principle in science is, that scientific questions can be scrutinised by everybody: You can just visit your nearest glacier and check whether and how fast it is retreating. There is not a big problem in demonstrating CO< | + | The most important principle in science is, that scientific questions can be scrutinised by everybody: You can just visit your nearest glacier and check whether and how fast it is retreating. There is not a big problem in demonstrating CO< |
===== Developed countries still consume the most energy ===== | ===== Developed countries still consume the most energy ===== | ||
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==== Illustration 1: Inefficient economy ==== | ==== Illustration 1: Inefficient economy ==== | ||
- | {{: | + | {{: |
The comparison of economic power and prospertity in both these countries is well-known: the buildings, vehicles and machines in the former East Germany were much less efficient than those in West Germany. It isn't the quantity of the consumption but rather it is the quality of the usage which matters.\\ \\ | The comparison of economic power and prospertity in both these countries is well-known: the buildings, vehicles and machines in the former East Germany were much less efficient than those in West Germany. It isn't the quantity of the consumption but rather it is the quality of the usage which matters.\\ \\ | ||
- | Embarassing: | + | Embarassing: |
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==== Illustration 2: Locomotives ==== | ==== Illustration 2: Locomotives ==== | ||
- | {{: | + | {{: |
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+ | The future energy system will have to be based on renewable sources mainly. Look at Germany as an example: The amount of electricity produced by renewable sources like wind power and photovoltaics has been growing significantly during the last decades. This also includes much improved efficieny. The " | ||
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Each year, old buildings in Europe use more than 16 litres of heating oil on average per square metre of living area for heating alone. That is about one third of the total energy consumption in Europe.\\ | Each year, old buildings in Europe use more than 16 litres of heating oil on average per square metre of living area for heating alone. That is about one third of the total energy consumption in Europe.\\ | ||
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- | Passive Houses, like those examples already built all over Europe, reduce the energy demand for ** heating to less than one-tenth ** in comparison with the actual | + | Passive Houses, like those examples already built all over Europe, reduce the energy demand for ** heating to less than one-tenth ** in comparison with the actual consumption (only 1.5 litres per square metre remaining). In doing so, the level of **living comfort ** is improved even more. Older buildings can also be retrofitted with better insulation and heat recovery. |
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The list of examples could go on and on. In our information pages relating to [[Basics: | The list of examples could go on and on. In our information pages relating to [[Basics: | ||
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> ** A high per capita energy consumption is a sign of inefficiency and backwardness, | > ** A high per capita energy consumption is a sign of inefficiency and backwardness, | ||
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- | This also applies to road transport. | + | This also applies to road transport. |
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For example the European Commission has realised the need for increased energy efficiency very well. The fact that German interest groups are trying to slow down progress towards more energy efficiency just does not fit the image of the advanced German economy. | For example the European Commission has realised the need for increased energy efficiency very well. The fact that German interest groups are trying to slow down progress towards more energy efficiency just does not fit the image of the advanced German economy. | ||
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- | It is fitting that improvement of energy efficiency also causes a great reduction in CO< | + | It is fitting that improvement of energy efficiency also causes a great reduction in CO< |
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===== The Energy Benefit ===== | ===== The Energy Benefit ===== | ||
- | Some 25 years ago, the term **" | + | Some 25 years ago, the term **" |
So we have to find another word for the original clearly defined term and take care that it is not hijacked again and used for other purposes. | So we have to find another word for the original clearly defined term and take care that it is not hijacked again and used for other purposes. | ||
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Under ideally set conditions, there is no need to use energy for the provision of these energy benefits which are usually required. | Under ideally set conditions, there is no need to use energy for the provision of these energy benefits which are usually required. | ||
- | Proof of this, for example, is that if energy regularly remains in the system within the period of a year, the inner energy would increase continuously and the system would heat up. (An increase in potential energy can only take place on a very small scale, as shown by a rough calculation). | + | Proof of this, for example, is that if energy regularly remains in the system within the period of a year, the inner energy would increase continuously and the system would heat up. (An increase in potential energy can only take place on a very small scale, as shown by a rough calculation). |
- | With a more exact analysis of the services, it becomes clear that these generally consist in maintaining a non-equilibrium state. | + | With a more exact analysis of the services, it becomes clear that these generally consist in maintaining a //non-equilibrium state//. This is the case particularly for most of the services listed in the table. |
- | * Either by creating a dynamic flux balance – i.e. by actively counteracting through energy the effort for equilibrium; | + | * //Either// by creating a dynamic flux balance – i.e. by actively counteracting through energy the effort for equilibrium; |
- | * or by creating stationary barriers which passively counteract the change of state and thereby establish the desired state as the new equilibrium. | + | |
- | The first alternative requires a more or less great active energy flow which then leaves the system as anergy, as described above. | + | * //or// by creating stationary barriers which passively counteract the change of state and thereby establish the desired state as the new equilibrium. |
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+ | The first alternative requires a more or less great active energy flow which then leaves the system as anergy, as described above. | ||
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===== How does that help us in practice? ===== | ===== How does that help us in practice? ===== | ||
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| Warm rooms | | | Warm rooms | | ||
| Lighting | | | Lighting | | ||
- | |Transport| | + | |Transport| |
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- | There are many more examples - **the efficiency of electronical and electrical devices and also production processes can be significantly improved too **. Of course, each process must be separately analysed - and the analysis must encompass the system limits sufficiently. | + | There are many more examples - **the efficiency of electronical and electrical devices and also production processes can be significantly improved too**. Of course, each process must be separately analysed - and the analysis must encompass the system limits sufficiently. |
- | Please note that these examples only represent the current state of technology. | + | Please note that these examples only represent the current state of technology. It is very likely that ** efficiency will be improved |
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How does that work?\\ | How does that work?\\ | ||
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- | ** For the warm rooms example ** we have already shown that in a practical way on the page about [[basics: | + | ** For the warm rooms example ** we have already shown that in a practical way on the page about [[basics: |
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- | {{: | + | {{: |
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- | {{: | + | {{: |
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** All this sounds so simple – and it is simple too! ** What is necessary is the serious desire to solve the problem and separate oneself from old, long since refuted and superstitious views: | ** All this sounds so simple – and it is simple too! ** What is necessary is the serious desire to solve the problem and separate oneself from old, long since refuted and superstitious views: | ||
- | The superstition that higher energy consumption and greater physical power represent sophistication: | + | The superstition that higher energy consumption and greater physical power represent sophistication: |
The superstition that better thermal insulation of buildings is expensive – it isn't if it is carried out at the same time as other essential measures. | The superstition that better thermal insulation of buildings is expensive – it isn't if it is carried out at the same time as other essential measures. | ||
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* It has been proved that climate change is happening - today. | * It has been proved that climate change is happening - today. | ||
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* The reasons lie in the combustion processes of coal, mineral oil and natural gas. | * The reasons lie in the combustion processes of coal, mineral oil and natural gas. | ||
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* Serious action will have to be taken if our children and grandchildren are to have a future that is worth living. | * Serious action will have to be taken if our children and grandchildren are to have a future that is worth living. | ||
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* Energy consumption is the key to the solution of the climate problem. | * Energy consumption is the key to the solution of the climate problem. | ||
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* Higher energy consumption is a sign of inefficiency, | * Higher energy consumption is a sign of inefficiency, | ||
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* More efficient energy use can start here and now. Many better efficient technologies are already available | * More efficient energy use can start here and now. Many better efficient technologies are already available | ||
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* With much more efficient energy use, the energy demand can be reduced to the extent that sustainable supply becomes possible even in the industrialised countries. | * With much more efficient energy use, the energy demand can be reduced to the extent that sustainable supply becomes possible even in the industrialised countries. | ||
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* In about 50 years it will be possible to reduce the CO< | * In about 50 years it will be possible to reduce the CO< | ||
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* Antiquated prejudices are overcome. | * Antiquated prejudices are overcome. | ||
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* Existing know-how is consistently applied. | * Existing know-how is consistently applied. | ||
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* Research on energy efficiency is intensified - enormous potential, innovative power and future markets lie here. | * Research on energy efficiency is intensified - enormous potential, innovative power and future markets lie here. | ||
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* Further qualification of the relevant professions: | * Further qualification of the relevant professions: | ||
basics/energy_and_ecology/greenhouse_effect_and_climate_protection.1442060241.txt.gz · Last modified: 2015/09/12 14:17 by wfeist