Agreeable Climate

The ideal insulation of the building is the requirement for low energy needs and an agreeable room climate.  Throughout the entire building, 3 heat insulating panels are built in the windows.  The rear building was completely insulated 2009 and a primary energy requirement of only 82 kWh/m²a was reached, which undershoots the set point of a new building by 70 %.  

Intelligent air supply units, through which an inflow of tempered air is possible, were integrated in the face of the building.  The exit air is adjusted to the room size and number of guests in the room.  

Oil heating was replaced by the modern wood pellet heater with flue gas treatment equipment in 2002.  The heater has a maximum performance of 300 kilowatts.  About 100 tons of wood from natural finish sawdust are spent every year.  Wood, when being burnt, produces the same amount of the gas carbon dioxide (CO²) as it absorbed from the atmosphere during its growth.  The sustainable forest management of the Black Forest therefore guaranties a closed CO²-circuit that is not dangerous for the greenhouse earth.   

The thermal solar energy plant with a collector area of 30 square meters supports the warm water production.  On sunny days, the required amount of heat for washing and showering is produced solely by the solar plant.  

The environmentally friendly groundwater cooling was built 2007 for the climate control of the hotel rooms.  A pump draws 10 to 13 degrees (Celsius) cold water from the depth of about 16 to 20 meters from the water standpipe in the hotel courtyard and therewith supplies a filigree heat exchanger system.  In the hotel rooms, the guests can adjust the requested room temperature with convector ventilators.  The cool water circulates through a pipe system in the ceiling through each room and is then released to the ground with a maximum heat of 16 degrees Celsius through an injection well, where it drains away and cools down.