Phius Climate Data Sets

If greater specificity is needed in terms of time steps, a different program like WUFI Plus, can be used that has dynamic calculation capabilities instead of a standard static model. In many cases, this is not necessary as the passive house verification method in WUFI Passive has been set up to simulate dynamic modeling for passive buildings. This is made possible because the short term fluctuations should matter less as the lag effect due to super insulation, air-tightness, and thermal mass, provides a buffer against isolated peak conditions.

Prolonged peak conditions have a large effect in terms of real world performance. However, there is a real difference between weather and climate. The climate is a an average of many years, while the weather is what occurs at any given time.  Climate data is unable to predict any given trend in the future weather. Next year, the monthly average for may could be 55F and even out this year’s unseasonable warm spell.