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basics:energy_efficiency_-_the_key_to_future_energy_supply [2018/12/03 10:54]
cblagojevic [See also]
basics:energy_efficiency_-_the_key_to_future_energy_supply [2019/02/21 10:06] (current)
cblagojevic
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   * A [[planning:​thermal_protection:​windows|Passive House window]] reduces more than 70 % of the heat losses in contrast with existing double pane glazing;   * A [[planning:​thermal_protection:​windows|Passive House window]] reduces more than 70 % of the heat losses in contrast with existing double pane glazing;
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   * even [[planning:​thermal_protection:​thermal_protection_works:​insulation_increases_comfort_-_evidence_no.3_outdoor_thermography|subsequent good insulation]] of an external wall saves almost 90% of the losses of that wall   * even [[planning:​thermal_protection:​thermal_protection_works:​insulation_increases_comfort_-_evidence_no.3_outdoor_thermography|subsequent good insulation]] of an external wall saves almost 90% of the losses of that wall
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   * and an efficient heat recovery system reduces the ventilation heat losses by 75 to 90 %.   * and an efficient heat recovery system reduces the ventilation heat losses by 75 to 90 %.
  
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   * With the 1-litre car, over 75 % of the fuel can be saved (without restricting driving comfort – such a car will soon be available on the market)   * With the 1-litre car, over 75 % of the fuel can be saved (without restricting driving comfort – such a car will soon be available on the market)
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   * With an LCD monitor about 70 % of the electricity consumption is saved in comparison with old CRT monitors; LED-monitors will be better again and electronic ink will be even better, there is almost no energy consumption remaining with such a screen from a modern e-book-reader. ​   * With an LCD monitor about 70 % of the electricity consumption is saved in comparison with old CRT monitors; LED-monitors will be better again and electronic ink will be even better, there is almost no energy consumption remaining with such a screen from a modern e-book-reader. ​
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   * 75 to 80 % of the electricity consumption can be saved by using fluorescent lamps or LED-lights available on the market   * 75 to 80 % of the electricity consumption can be saved by using fluorescent lamps or LED-lights available on the market
  
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 There are several reasons: There are several reasons:
   * All fossil and nuclear energy sources come with a lot of problems: Do you remember the last oil spill? Have you seen the holes in Earths crust created by brown coal surface mining? Do you really think the risks of nuclear energy are inevitable?   * All fossil and nuclear energy sources come with a lot of problems: Do you remember the last oil spill? Have you seen the holes in Earths crust created by brown coal surface mining? Do you really think the risks of nuclear energy are inevitable?
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   * 80% of all energy used in contemporary economy is based on fossil fuels - and this is creating an increased CO<​sub>​2</​sub>​ concentration in the atmosphere and in the oceans. The results are increased temperatures,​ heavier and more frequent extreme weather conditions - and an rising ocean level.   * 80% of all energy used in contemporary economy is based on fossil fuels - and this is creating an increased CO<​sub>​2</​sub>​ concentration in the atmosphere and in the oceans. The results are increased temperatures,​ heavier and more frequent extreme weather conditions - and an rising ocean level.
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   * Fossil fuel resources are finite - an especially the cheap sources will go early. That results in rising energy prices. Already high in 2004, these are even higher now (2011). It will be expensive to mainly rely on fossil fuels in the future.   * Fossil fuel resources are finite - an especially the cheap sources will go early. That results in rising energy prices. Already high in 2004, these are even higher now (2011). It will be expensive to mainly rely on fossil fuels in the future.
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   * More humans in a growing world want to have their access to the services done using energy. Without a much better energy efficiency this would add to the rising costs of a limited resource.   * More humans in a growing world want to have their access to the services done using energy. Without a much better energy efficiency this would add to the rising costs of a limited resource.
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   * Higher efficiency comes with even better comfort. Using energy not efficient will place energy on the wrong place (where it is not needed) and this ends with a kind of problems in each case.   * Higher efficiency comes with even better comfort. Using energy not efficient will place energy on the wrong place (where it is not needed) and this ends with a kind of problems in each case.
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   * Better efficiency is tried and tested - it is worth the effort to insulate a building, to install better windows, to use heat recovery ventilators. ​   * Better efficiency is tried and tested - it is worth the effort to insulate a building, to install better windows, to use heat recovery ventilators. ​
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   * There is only a small additional investment cost to be done - an investment, which is paying back with a quite high internal interest rate. As if it was producing energy (the energy you do not need any longer) to very low costs.   * There is only a small additional investment cost to be done - an investment, which is paying back with a quite high internal interest rate. As if it was producing energy (the energy you do not need any longer) to very low costs.
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   * The value is mainly created by the handcrafts building new construction of doing the refurbishment - and some added value to the products used in the process. All this is to some 80 to 95% regional creation of value, what will help communities recovering.   * The value is mainly created by the handcrafts building new construction of doing the refurbishment - and some added value to the products used in the process. All this is to some 80 to 95% regional creation of value, what will help communities recovering.
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 This can be easily demonstrated:​ This can be easily demonstrated:​
   * If we call to mind the significant events that have occurred in recent years (besides the political wrangling and the virtual intrigues of cunning fraudsters),​ for example, the incidences of extreme weather events such as destructive tornados, of deaths due to gas pipeline explosions, of rocketing energy prices, oils spills in the Caribbean, nuclear reactor accidents, …   * If we call to mind the significant events that have occurred in recent years (besides the political wrangling and the virtual intrigues of cunning fraudsters),​ for example, the incidences of extreme weather events such as destructive tornados, of deaths due to gas pipeline explosions, of rocketing energy prices, oils spills in the Caribbean, nuclear reactor accidents, …
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   * These events no longer affect “only” the inhabited environment. They govern our everyday life. The rising cost of energy is eating up an increasingly larger proportion of the income of less affluent parts of society in particular. Moreover, the cost of damage caused by supplying conventional energy has to be borne by the taxpayers – a cost that isn’t included in the energy price, let alone the fact that even now, many countries still subsidise such energy paths and thus distort the markets.  ​   * These events no longer affect “only” the inhabited environment. They govern our everyday life. The rising cost of energy is eating up an increasingly larger proportion of the income of less affluent parts of society in particular. Moreover, the cost of damage caused by supplying conventional energy has to be borne by the taxpayers – a cost that isn’t included in the energy price, let alone the fact that even now, many countries still subsidise such energy paths and thus distort the markets.  ​
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   * Given our current energy dependence, the availability of energy equates to power and wealth. As a result, power and wealth are also used to influence democratic institutions. ​   * Given our current energy dependence, the availability of energy equates to power and wealth. As a result, power and wealth are also used to influence democratic institutions. ​
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   * Vested economic interests have long recognised the fact that energy is a decisive factor for our future; often due to ignorance or short-sightedness,​ however, they are calling for the very decisions that lead us down the wrong paths. For example, it is not a question of gaining more influence over oil wells in the Middle East by using military force (obviously this strategy has not proven successful). Rather, it is about reducing our dependence on the power-hungry structures of energy giants. This is only possible if energy-related services are provided locally thus contributing to regional value creation – and exactly this is achieved through energy efficiency and renewable energy resources. ​   ​   * Vested economic interests have long recognised the fact that energy is a decisive factor for our future; often due to ignorance or short-sightedness,​ however, they are calling for the very decisions that lead us down the wrong paths. For example, it is not a question of gaining more influence over oil wells in the Middle East by using military force (obviously this strategy has not proven successful). Rather, it is about reducing our dependence on the power-hungry structures of energy giants. This is only possible if energy-related services are provided locally thus contributing to regional value creation – and exactly this is achieved through energy efficiency and renewable energy resources. ​   ​
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   * No other economic sector in our civilisation depends so vitally and to such a substantial extent on the energy supply. The warnings of lobbyists are definitely true and it would be a great mistake to ignore these.  ​   * No other economic sector in our civilisation depends so vitally and to such a substantial extent on the energy supply. The warnings of lobbyists are definitely true and it would be a great mistake to ignore these.  ​
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   * Even the “great minds” with completely different approaches have recognised these interactions. Take, for example, Bill Gates’ monologue, “Bill Gates on energy: Innovating to zero!” This analysis is correct to a great extent (except for the over-emphasis on “zero”, as 15% to 20% is still considered to be “nearly zero” in the case made here – problem solved). However, the “solution” being promoted here goes in the wrong direction, leading to new dependencies instead of freeing people and economies from dependence.    * Even the “great minds” with completely different approaches have recognised these interactions. Take, for example, Bill Gates’ monologue, “Bill Gates on energy: Innovating to zero!” This analysis is correct to a great extent (except for the over-emphasis on “zero”, as 15% to 20% is still considered to be “nearly zero” in the case made here – problem solved). However, the “solution” being promoted here goes in the wrong direction, leading to new dependencies instead of freeing people and economies from dependence.
 Does this mean that all other issues are less important or even unimportant?​ Not at all. In reality, our society values other topics greatly: accessibility for the disabled, the separation of waste, the living environment,​ a socially acceptable distribution of costs, the preservation of our historical monuments. The fact is that we have already fixed very extensive requirements for most of these issues, sometimes even through laws, and these are not in conflict at all with the measures for much more efficient uses of energy. The latter has been almost reprehensibly neglected in the decades since the 1950s; energy consumption has increased five-fold since then. The per capita consumption of non-renewable energy in developed countries today is too high for sustainable global development,​ by a factor of almost four. Thus, something really has to happen, and that on a large scale. ​ Does this mean that all other issues are less important or even unimportant?​ Not at all. In reality, our society values other topics greatly: accessibility for the disabled, the separation of waste, the living environment,​ a socially acceptable distribution of costs, the preservation of our historical monuments. The fact is that we have already fixed very extensive requirements for most of these issues, sometimes even through laws, and these are not in conflict at all with the measures for much more efficient uses of energy. The latter has been almost reprehensibly neglected in the decades since the 1950s; energy consumption has increased five-fold since then. The per capita consumption of non-renewable energy in developed countries today is too high for sustainable global development,​ by a factor of almost four. Thus, something really has to happen, and that on a large scale. ​
basics/energy_efficiency_-_the_key_to_future_energy_supply.txt · Last modified: 2019/02/21 10:06 by cblagojevic