ISOVER Passivhaus Engl.

The Possibilities.
A passive house that sets
After passive house technology moved in, Austrian secondary school Klaus has
become a place of human warmth.
In passive houses that are inhabited
by many people, the "thermal contribution"
of about 70 watts per
person and hour is highly significant.
Due to the airtight execution
of the building envelope, the air
change can be precisely controlled.
By means of a heat exchanger, the
ventilation heat loss can be limited
to about 10 %. Since the number
of persons in school and office
buildings is normally higher, the
heating demand is considerably
lower than that of residential buildings.
The requirements to lighting
114 ISOVER
and cooling, however, are usually
higher.
Average demand of fresh
air: 30 m 3 /h per pupil
and teacher.
To ensure best air quality and ideal
room temperature in the Austrian
secondary school Klaus, an earthto-air
heat exchanger was installed
before the central ventilation unit
with a volumetric flow rate of
35,000 m3 /h. In winter, this pre-
heats the outside air before entering
the building while pre-cooling it
in summer.