With effect from January 1st, 1995 the amended Heat Transfer Barrier Act (,,Warmeschutzverordnung ) was introduced in the Federal Republic of Germany, replacing the 1982 version. This decree is binding on all houses to be built so that they reach the low energy standard. Former decrees envisaged mainly the reduction of the transmission heat loss while the amended version takes into account all other relevant aspects such as internal and solar heat gains as well as ventilation heat losses, and includes them into an energy balance procedure.
Dynamic insulation has been used in non domestic buildings for 20- 30 years in order to reduce the heat loss and to bring preheated air into the buildings. Dynamic insulation means a construction where the air is being forced through the insulation, usually from the colder outside air into the heated building. The Norwegian Building Research Institute has been engaged to evaluate 12 row houses, with dynamic insulation used in the roof, which has been built in the Oslo area. 4 of the houses were monitored over a period of time.
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