A passive house captures natural energy sources to create – and capture – heat, lessening the requirement for bought-in energy. The passive house technique can aid the construction business in reducing carbon emissions and achieve international climate targets.
Three decades ago, the world’s first so-called passive house complex was built in Germany as a component of a movement to sustainably build buildings and limit environmental damage.
Dr Wolfgang Feist, founder and leader of the Passive House Institute, cultivated the concept that, by utilising the right materials and techniques, structures could be heated or cooled with little need for bought-in energy.
Called ‘passivhaus’ in Germany, these buildings draw warmth from ‘passive’ sources like the sun, the heat released by occupants, or warmth emitted from appliances. With sound insulation, passive houses do not have to depend on conventional, inefficient and climate-harming temperature control systems driven by electricity, gas or oil.
Dr Feist’s plans were constructed around five key principles to maintain heat energy in the building: high-quality thermal insulation, triple-glazed windows, the avoidance of thermal bridges, an airtight building envelope and a ventilation system that can recover heat. These concepts can guarantee that generated heat is contained in the building for up to 14 days.
To be certified as adhering to passive house standards, buildings must be tested via standards established by the Passive House Institute in Germany.
Passive houses consume about 90% less heating energy than older buildings and 75% less energy than typical newly built building, according to the Institute. They require an extra heating source of heating when temperatures are cold, while in summer months air conditioning is not needed as insulation restricts heat entry.
As worries regarding climate change intensify and more citizens relocate to urban areas, Feist’s approach becomes more and more popular. Buildings certified by the Institute include family homes in Japan to the first passive house hospital in Frankfurt, Germany, set for completion later in 2021.
Passive houses can aid governments and societies in adhering to emissions-reduction targets, particularly in the building industry and around the world.
Source: We Forum.Org