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--- basics:the_passive_house_-_historical_review [2019/06/28 08:48] – [The Passive House at an altitude of 2164 m: The Rocky Mountains Institute (rmi) by A. and H. Lovins] cblagojevic
+++ basics:the_passive_house_-_historical_review [2022/08/27 19:08] – [Conclusion] wfeist
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 The most essential point is: To be aware of the performance character of really comfortable and energy efficient buildings. To be able to design such a building, it's important to calculate the performance in advance - prior to construction. The performance includes thermal comfort (during Winter and during Summer), indoor air quality and energy consumption. In our century the tools for a reliable calculation of these performance characteristics are available - this is the key for a good design. And it is the key to passive house construction - because the [[http://www.passipedia.org/planning/tools|PHPP tool]] has been made available for all professionals in the field. This tool is reliable, easy to use and transparent; it can be used as the backbone for the communication between the investor, the architect, the engineers and the people on the construction side. All important issues can be dealt with - whether the design of the ventilation system, the optimization of insulation layers, how to avoid thermal bridging and how to guarantee good indoor comfort. That is the first and most important reason, why passive house now can be designed and built by every architect and builder (well, those who are motivated to do it).\\
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-The second reason is the availability of suitable products and reliable data about the performance of these products. Before the passive house development there have been no windows with U-values lower than 0,85 W/(m²K) available on the market - now there is a increasing number of producers with Hundreds of certified windows of such a quality. Before the passive house development there have been no air-to-air heat recovery systems with reliable heat recovery rates higher than 80% available. Now there are more than 100 products on the market, produced by enterprises in different countries. The information about these products has been published - the performance of such products is at least some factor two better than the performance of former standard systems. That, together with reliable data available from certification of the components, creates the background for a successful design of really energy efficient buildings.
+The second reason is the availability of suitable products and reliable data about the performance of these products. Before the passive house development there have been no windows with U-values lower than 0,85 W/(m²K) available on the market - now there is a increasing number of producers with Hundreds of certified windows of such a quality. Before the passive house development there have been no air-to-air heat recovery systems with reliable heat recovery rates higher than 80% available. Now there are also Hundreds of certified products on the market, produced by enterprises in different countries. The information about these products has been published - the performance of such products is at least some factor two better than the performance of former standard systems. That, together with reliable data available from certification of the components, creates the background for a successful design of really energy efficient buildings.
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