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--- basics:the_passive_house_-_definition [2025/01/17 03:43] – yaling.hsiao@passiv.de
+++ basics:the_passive_house_-_definition [2025/01/17 03:58] (current) – [Heating load - the Passive House requirement] yaling.hsiao@passiv.de
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 The Passive House is not an energy standard but an integrated concept assuring the highest level of comfort. The exact definition is as follows:\\
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-> **//"A Passive House is a building, for which thermal comfort (ISO 7730) can be achieved solely by post-heating or post-cooling of the fresh air mass, which is required to achieve sufficient indoor air quality conditions – without the need for additional recirculation of air."// **
+> **//"The Passive House is a building standard that is energy-efficient, comfortable, cost-efficient and environmentally friendly. It enables simpler space conditioning systems. For example, thermal comfort in winter can be achieved solely by heating the supply air required for hygienic reasons."// **
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 This is a purely functional definition which doesn't contain any numerical values and is valid for all climates. This definition shows that the Passive House is a fundamental concept and not a random standard. Passive Houses have not been "invented" by anyone – in fact, the Passive House principle was discovered. It may be debatable whether the term "Passive House" accurately describes this concept – well, there is no other term better suited for it. Thermal comfort is achieved to a maximum extent through passive measures (insulation, heat recovery, passive use of solar energy and internal heat sources).\\
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 Some critics came up stating "there can't be one size for every site". This statement is correct, it is already anticipated in the criteria: That is, why passive house is a functional standard rather than a descriptive one. Of course the criteria lead to different solutions in different climates: You will need more insulation in Stockholm than in Palermo and more shading the other way arround. But designers are absolutely free how to choose their solution meeting the PHPP-energy-balance. So, there will be many different solutions in each climate; that is, why a functional standard has much more flexibility than a descriptive one. \\
-To complicated for some building designers? OK, one can also go with some exemplary solutions nearby ore realized in comparable climates. You will find lots of examples in the Passive House database [[[http://www.passivhausprojekte.de/index.php?lang=en]|http://www.passivhausprojekte.de/index.php?lang=en]]].
+To complicated for some building designers? OK, one can also go with some exemplary solutions nearby ore realized in comparable climates. You will find lots of examples in the [[https://passivehouse-database.org/index.php?lang=en|Passive House database]]
 ===== See also =====