Passivhus

Passivhaus is a building design concept that originated in Germany in the early 1990s. The term "Passivhaus" translates to "passive house," and it refers to a type of building that is designed to be highly energy efficient, using minimal amounts of energy for heating and cooling. The goal of a Passivhaus is to create a building that is comfortable and healthy for its occupants, while also reducing the environmental impact of the building industry.

To achieve the Passivhaus standard, buildings must meet a set of rigorous criteria. This includes achieving a very low level of air leakage, using high-performance insulation to minimize heat loss, and incorporating large windows that allow natural light and heat to enter the building. The buildings are also designed to be airtight, with a controlled ventilation system that brings in fresh air while minimizing heat loss.

The Passivhaus standard is based on the concepts of insulation, air tightness, and solar gain. Buildings are designed to maximize natural light and heat by using overhangs, solar screens, and other passive solar design techniques. The buildings are also designed to use renewable energy sources, such as solar or wind power, to meet their energy needs.

Passivhaus buildings have been shown to have significant energy savings, with some buildings reducing energy consumption by up to 90% compared to typical buildings. The concept has also been adopted in countries around the world, with many cities and countries implementing policies to encourage the development of sustainable buildings.

The Passivhaus standard has also been recognized for its positive impact on indoor air quality, with buildings designed to minimize pollutants and allergens, creating a healthy indoor environment for occupants.