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basics:energy_and_ecology:renewable_sources_of_energy

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 basics:energy_and_ecology:renewable_sources_of_energy [2015/09/12 21:43]wfeist basics:energy_and_ecology:renewable_sources_of_energy [2019/02/21 10:05]cblagojevic Both sides previous revision Previous revision 2019/02/21 10:05 cblagojevic 2015/09/12 21:46 wfeist [Renewable sources of energy] 2015/09/12 21:43 wfeist 2014/09/18 18:19 external edit2014/04/14 13:57 twessel 2010/11/11 12:56 beatrice 2010/11/11 12:54 beatrice 2010/11/11 12:53 beatrice 2010/10/15 13:19 external edit2010/08/10 10:32 edit 2010/08/10 10:21 edit 2010/08/10 10:06 edit 2010/08/10 10:03 edit 2010/08/10 10:00 edit 2010/08/10 09:57 edit 2010/08/10 09:51 edit 2010/08/10 09:50 edit 2010/08/10 09:48 edit 2010/08/10 09:46 edit 2010/08/10 09:40 edit created Next revision Previous revision 2019/02/21 10:05 cblagojevic 2015/09/12 21:46 wfeist [Renewable sources of energy] 2015/09/12 21:43 wfeist 2014/09/18 18:19 external edit2014/04/14 13:57 twessel 2010/11/11 12:56 beatrice 2010/11/11 12:54 beatrice 2010/11/11 12:53 beatrice 2010/10/15 13:19 external edit2010/08/10 10:32 edit 2010/08/10 10:21 edit 2010/08/10 10:06 edit 2010/08/10 10:03 edit 2010/08/10 10:00 edit 2010/08/10 09:57 edit 2010/08/10 09:51 edit 2010/08/10 09:50 edit 2010/08/10 09:48 edit 2010/08/10 09:46 edit 2010/08/10 09:40 edit created Line 5: Line 5: The Passive House is a perfect example for this: The Passive House is a perfect example for this: * more than a third of the total energy consumption of a Passive House in a typical cool moderate climate can be covered by **hot water collectors** – because a Passive House requires more energy for the generation of hot water than it does for the heating. Thermal collectors are the best solution for the provision of hot water. (The figures are even better in warm moderate climates and in "lucky climates like California: it could be 50% to full cover.) * more than a third of the total energy consumption of a Passive House in a typical cool moderate climate can be covered by **hot water collectors** – because a Passive House requires more energy for the generation of hot water than it does for the heating. Thermal collectors are the best solution for the provision of hot water. (The figures are even better in warm moderate climates and in "lucky climates like California: it could be 50% to full cover.) + * The remaining demand is so small in Passive Hosues that it can be met in a fully cost-effective way by renewable energy, e.g. by buying a **share in a wind power plant** – this has already been implemented in practice (example in illustration). * The remaining demand is so small in Passive Hosues that it can be met in a fully cost-effective way by renewable energy, e.g. by buying a **share in a wind power plant** – this has already been implemented in practice (example in illustration). + * **Photovoltaic systems** can also contribute significantly to the supply of energy //in Passive Houses//. But let us be honest: The contribution of photovoltaic systems to "​ordinary"​ inefficient houses with high consumption values is no more than a "fig leaf"; but Passive House efficiency makes the difference.\\ * **Photovoltaic systems** can also contribute significantly to the supply of energy //in Passive Houses//. But let us be honest: The contribution of photovoltaic systems to "​ordinary"​ inefficient houses with high consumption values is no more than a "fig leaf"; but Passive House efficiency makes the difference.\\ \\ \\ Line 15: Line 17: \\ \\ |{{ :​picopen:​endenergie_erneuerbare_farbig.png?​350 }}|{{ :​picopen:​endenergie_erneuerbare_und_effizienz_farbig.png?​350 }}| |{{ :​picopen:​endenergie_erneuerbare_farbig.png?​350 }}|{{ :​picopen:​endenergie_erneuerbare_und_effizienz_farbig.png?​350 }}| - |**//With constantly high energy consumptions,​ at the moment\\ it is difficult to identify the contribution of renewable ​ener-\\ gy sources (colour) amongst the exhaustible sources (grey).\\ However, a very positive estimate (column on the right)\\ definitely shows significant levels of supplied energy.\\ \\ => With poor efficiency, a relevant proportion will still be\\ dominated by the fossil fuel sources in the future. \\ \\ \\ //**|**//In contrast, if the potentials for more efficient use are imple-\\ mented, the same high absolute energy generation from\\ renewable energy sources will make up a considerable part\\ of the total supply; this can be as much as 50% for electri-\\ city, and for fuels it can be a quarter of the demand.\\ \\ => As a result, the use of fossil energy sources as a combi-\\ nation ​of "​renewable + efficient"​ energy sources can be\\ reduced to less than a third in comparison with the current\\ value; this could be possible in around fifty years' time.//​**|\\ + |**//With constantly high energy consumptions,​ at the moment it is difficult to identify the contribution of renewable ​energy ​sources (colour) amongst the exhaustible sources (grey). However, a very positive estimate (column on the right) definitely shows significant levels of supplied energy.\\ \\ => With poor efficiency, a relevant proportion will still be dominated by the fossil fuel sources in the future. \\ \\ \\ //**|**//In contrast, if the potentials for more efficient use are implemented, the same high absolute energy generation from renewable energy sources will make up a considerable part of the total supply; this can be as much as 50% for electricity, and for fuels it can be a quarter of the demand.\\ \\ => As a result, the use of fossil energy sources as a combination ​of "​renewable + efficient"​ energy sources can be reduced to less than a third in comparison with the current value; this could be possible in around fifty years' time.//​**|\\ \\ \\ \\ \\ Line 21: Line 23: * less burden on social funds (through noticeably increased employment) * less burden on social funds (through noticeably increased employment) + * additional tax revenue (due to added value) * additional tax revenue (due to added value) + * increase in buying power (due to less energy costs) * increase in buying power (due to less energy costs) + * the reduction in CO<​sub>​2​ emission.\\ * the reduction in CO<​sub>​2​ emission.\\ \\ \\