Shape and Structure as Sustainable Strategies
In the overall design of the building a great focus has been on
the reduction of energy use and enhancing the indoor environment.
The building must comply with the the Swedish building code for
"climate zone IV" and the "Miljöbyggnad Silver" requirements.
Miljöbyggnad requires a 25% reduction in bought energy compared to
the Swedish building code. Further, educational buildings require a
great focus on the indoor environment such as the amount of
daylight and thermal comfort.
Reduce, optimize, and produce
The strict demands for reduced energy consumption have been met
through implemented strategies that will significantly reduce the
building's energy demands. These strategies can be divided into
three aspects; A reduction of the energy demands, an optimization
of the systems in the building and a production of energy.
The reduction of the energy demands are implemented completely
in the buildings passive properties, the shape, structure and
façade of the building. The compact shape of the building minimizes
heat loss, while an atrium ensures daylight access even deep in the
building, minimizing the need for heating and lighting. The façade
and the atrium provides free cooling and fresh air, while saving
energy. The exterior adaptable shading system further reduces the
cooling demands during sunny summer days without reducing the
intake of daylight.
To further lower the need for energy the buildings passive
properties have been optimized. Insolating the envelope, reduces
the heating and cooling loads. As a supplement to daylight, low
energy lamps (LED) is implemented throughout the building. The
ventilation is conducted via a low pressure variable air volume
(VAV) system that measures the CO2 levels and temperature of the
buildings and adjusts the air flow after the specific needs. The
VAV also covers both heating and cooling demands.
As a final measure to reduce the amount of bought energy is the
integration of photovoltaic panels on the roof that produce
electricity. The panels cover an area of 1350m2 and are
placed on south oriented sloped parts of the roof the maximize the
production of energy - up to 200MWH annually, enough to cover part
of the building's electric load and provide green energy to the
Designing with Daylight
The design of the building ensures that the indoor environment
lives up to the needs of an educational facility with various
functions. The areas closest to the façade, with high solar
exposure are multipurpose, flexible spaces that can be used for
studying, meeting, leisure activities etc during the day. These
spaces can have a more flexible indoor environment.
The classes that need to have a more stable, controlled indoor
environment are placed distantly from the façade. This way they
avoid direct sunlight exposure but they still maintain high levels
of Daylight Autonomy (more than 50%) and a moderate Daylight Factor
of 1 to 2%.
The inner spaces of the building, around the atrium, mainly
consist of circulation areas and auxiliary spaces with low daylight
and indoor environment requirements.