Rocky Mountains Institute Innovation Center

Energy and Resource Efficiency − Efficient. Environmentally Friendly. Sustainable

The design of this Passive House was performed with WUFI® Passive, a user-friendly building simulation tool from Fraunhofer IBP. The software combines passive building energy modeling with WUFI’s famed hygrothermal analysis power.

A professional building simulation should address the dynamic behavior and the moisture management in building components and rooms. This is especially important in climates where cooling and dehumidification of the indoor air play an important role. Dynamic heat and moisture processes in the building and in building components influence the energy demand as well as comfort and durability qualities. Effects of thermal inertia need to be taken into account as well as moisture buffering. The more detailed consideration of dynamic processes in a dynamic hygrothermal whole building simulation aims at further reduction of the energy demand, elimination of limitations in indoor comfort (overheating or overcooling for example) and avoidance of possible damage.