The document summarizes the climate control strategy used at Liselund mansion, a historic building located on the island of Moen near the Baltic Sea. To preserve the interior objects from damage caused by fluctuations in humidity, a dehumidifier controls the relative humidity to 60% year-round by supplying dried air through floor ducts. This strategy helps prevent mold growth and insect infestation at a cost of 15 megawatt hours per year. Small inlet grills are the only visible sign of the climate control system within the interior spaces of the historic mansion.

1. Christmas 2010
Liselund is a romatic park located on the
island Moen close to the Baltic Sea. The park
was until recently part of the Liselund
estate, but is now owned by the National
Museum of Denmark. The main building is a
country mansion with walls of brick masonry
and a thatched roof. Like many other historic
buildings it now serves the purpose as a Interior view of the dining room. The doors and windows are
museum. It has not been occupied for many single glazed and rather leaky.
years and is only open for visitors during the
summer. The inside temperature follows the outside
average, with an annual drift from 20°C in
summer to 0°C in winter. If nothing was
done, the relative humidity would be high all
year, above 80% RF. However this is not
acceptable for preservation, so a dehumidifier
controls the RH to 60% all year. The dried
air is supplied from a dehumidifier in the
basement and distributed with ducts below
the floor to the individual rooms. Small inlet
grills in the floor is the only visible change to
the interior. The annual energy consumption
for this climate control strategy is 15 MWh
The country mansion in the romantic park Liselund located on
the island Moen close to the Baltic Sea or 20 kWh/m3
The interior has original wall decoration and
furniture. These objects are sensitive to the
indoor climate, in particular the relative
humidity. If the air is too humid there is a
risk of mould growth and infestation by
insects. If the air becomes too dry the wooden
artefacts will bend or crack and the paint
flake of. The house has leaky double doors in
all directions; they provide direct access to
the nature outside and they also allow
outside air to enter quite rapidly. The indoor View of the inlet grill in the corner of the dining room. The
climate is therefore strongly influenced by the dehumidified air is distributed with ducts below the floor
outside variations in temperature and
relative humidity. The house is not heated in Merry Christmas and Happy New Year
winter, because there is no need for human
comfort. Poul Klenz Larsen