tirsdag 17. desember 2013
mandag 2. desember 2013
Av Clara Good, stipendiat ved Institutt for byggekunst, historie og teknologi, Norwegian University of Science and Technology (NTNU)
In Norway, as well as in most countries, buildings account for about 40% of the energy use. By making buildings more energy efficient, we can significantly reduce the global energy demand. The European Union has set ambitious goals for its member countries. In the Energy Performance of Buildings Directive (EPBD), it is declared that “by 2020, all new buildings shall be nearly zero energy buildings” (European Parliament 2010).
Nearly zero energy buildings are very energy efficient buildings that generate most of the energy they need from renewable energy sources on the building itself or nearby. That is, a building that by 2020 all new buildings in the EU will be small-scale power plants.
So how can buildings generate energy? The most obvious answer is: by using solar energy. In fact, it is almost impossible to build a zero energy building without it.