New Page 1

WUFI Plus is a whole building simulation model that solves for the heat and moisture balances in buildings. It solves all the wall, roof and basement (simplified for basements) components and the indoor conditions with different heat and air conditioning approaches.

The advantage for all the existing WUFI users is that it employs the same structure we have used so far for the 1-D. Users can become whole building energy and moisture experts at the same time.

Background: The hygrothermal behaviour of a building component that is exposed to weather is an important aspect of the overall performance of a building. Today the hygric transport phenomena through a building envelope are well understood and a realistic assessment of all relevant effects can be carried out by one of the numerous models and computer programs, that have been developed in different countries over the last years. The calculation of the hygrothermal performance of a part of the envelope is state-of-the-art, but until now the total behaviour of the actual whole building is not accounted for. Its importance is increasing as modern dwellings become more airtight and show elevated indoor humidity levels.

WUFI Plus is a new holistic model that takes into account the main hygrothermal effects, like moisture sources and sinks inside a room, moisture input from the envelope due to capillary action, diffusion and vapour ab-/desorption as a response to the exterior and interior climate conditions, heat source and sinks inside the room, heat input from the envelope, the solar energy input through walls and windows and hygrothermal sources and sinks due to natural or mechanical ventilation will be presented. Beside the theoretical background, several practical applications will be shown.

WUFI Plus 2012 (Whole building simulation, prerequisite is WUFI Pro):

WUFI Plus will be taught as part of the 2-1/2-day Advanced WUFI Workshop to be held in Napa, California on January 30-February 1. The 2-1/2 days will include Advanced WUFI 1D, WUFI Plus, and WUFI 2D.

Click the reservation button to reserve for any of the BEGINNING/STANDARD WUFI Workshops or the ADVANCED WUFI Workshop to be held in 2012. This is not a registration; just a way to indicate your interest and hold your spot. Hotel details will be sent to you soon.

“This breaks new ground for energy, IAQ & Building Envelope studies. Practitioners who are not using WUFI Plus will end up relegated to being ‘also rans’.” – Roger Morse, Morse Zehnter Associates

“A valuable robust tool matches with first rate instruction.” – Lee Durston, BCRA Design

“The new WUFI Plus software is a great analytical tool for engineers and architects. Expanding on the detailed capabilities and ease-of-use from WUFI Pro, Hartwig, Achilles and Andreas have exceeded expectations again….The 2-day WUFI Plus course was well done: demonstrating not only by hands-on examples, but also providing thorough validation and background information needed to understand its capabilities. I highly recommend this course for advanced users of WUFI wanting to take their skills to the next level.” -- Rick Duncan