basics:energy_and_ecology:primary_energy_quantifying_sustainability
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basics:energy_and_ecology:primary_energy_quantifying_sustainability [2019/01/24 10:14] – cblagojevic | basics:energy_and_ecology:primary_energy_quantifying_sustainability [2020/08/09 13:11] – [Primary energy – quantifying sustainability] wfeist | ||
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The primary energy demand determines the impact on the environment. To be more exact: | The primary energy demand determines the impact on the environment. To be more exact: | ||
* The total primary energy demand from non-renewable energy sources that is supplied to the building ((**There are many environmental effects of the use of energy**: consumption of resources, pollution of the atmosphere with harmful substances (e.g. CO< | * The total primary energy demand from non-renewable energy sources that is supplied to the building ((**There are many environmental effects of the use of energy**: consumption of resources, pollution of the atmosphere with harmful substances (e.g. CO< | ||
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* for all energy uses arising in the building, | * for all energy uses arising in the building, | ||
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* thus also for the household electricity in a residential house (shown in “yellow” in the following illustration). | * thus also for the household electricity in a residential house (shown in “yellow” in the following illustration). | ||
//Note: the current calculation method of the Energy Saving Regulations (EnEV) does not take the domestic electricity into account// | //Note: the current calculation method of the Energy Saving Regulations (EnEV) does not take the domestic electricity into account// | ||
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//**What is being compared? | //**What is being compared? | ||
-> **For the “existing building“ category ** with the average consumption of buildings from the construction year categories before 1984.\\ | -> **For the “existing building“ category ** with the average consumption of buildings from the construction year categories before 1984.\\ | ||
- | -> **For the “WschVO 84” category** (Thermal protection regulation) with the requirement standard set there (unfortunately there are no statistics for the actual consumption values, these are presumably higher because the regulations haven not taken into account some important facts and because construction is simul taneously | + | -> **For the “WschVO 84” category** (Thermal protection regulation) with the requirement standard set there (unfortunately there are no statistics for the actual consumption values, these are presumably higher because the regulations haven not taken into account some important facts and because construction is simultaneously |
-> **For the " | -> **For the " | ||
-> ** For the "EnEV 2002" category ** with the requirement standard set there (same problem with statistics here).\\ | -> ** For the "EnEV 2002" category ** with the requirement standard set there (same problem with statistics here).\\ | ||
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Two important stages can be identified: | Two important stages can be identified: | ||
* The first stage of heating energy savings from a typical old building to the " | * The first stage of heating energy savings from a typical old building to the " | ||
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* And the second stage of heating energy savings from the EnEV house to the Passive House, which is particularly interesting because not only is energy being saved, but also the whole system becomes more simpler, more comfortable and crisis-proof. Of course, also domestic electricity should be efficiently used in a Passive House.\\ | * And the second stage of heating energy savings from the EnEV house to the Passive House, which is particularly interesting because not only is energy being saved, but also the whole system becomes more simpler, more comfortable and crisis-proof. Of course, also domestic electricity should be efficiently used in a Passive House.\\ | ||
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Grey energy has not been dealt with here. Of course, energy expenditure also plays a role for the creation of a building: the** primary energy input for production (PEI)**. This has been systematically examined in two publications and set in relation to the operating energy input [[Basics: | Grey energy has not been dealt with here. Of course, energy expenditure also plays a role for the creation of a building: the** primary energy input for production (PEI)**. This has been systematically examined in two publications and set in relation to the operating energy input [[Basics: | ||
* Most of the grey energy is used for the production of the building materials. | * Most of the grey energy is used for the production of the building materials. | ||
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* The energy expenditure for the production of a (otherwise identical) Passive House is not necessarily greater than that of an ordinary new construction; | * The energy expenditure for the production of a (otherwise identical) Passive House is not necessarily greater than that of an ordinary new construction; | ||
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basics/energy_and_ecology/primary_energy_quantifying_sustainability.txt · Last modified: 2020/08/09 13:50 by wfeist