Wufi design tool

After validation and calibration by experiment it can be used to test further variants. The drying-out of the wall was monitored for three years by gravimetric testing of drill samples.

The individual layers of the component and their respective thickness are entered into a table. The component is then divided into numerical grid elements whose widths are chosen according to the temperature and moisture variation expected for the respective location.

The manual grid definition is done by entering the desired number of grid elements per layer and an expansion factor which describes the ratio of the sizes of successive grid elements. Steep temperature and moisture gradients may especially be expected close to the layer interfaces. Splitting a layer into two layers allows the grid to expand and subsequently contract within a material layer. Depending on the object and the purpose of the calculation, additional data can be used: the moisture storage function, the liquid transport coefficients for suction and redistribution, the moisture- and temperature-dependent heat conductivity, the moisture-dependent diffusion resistance factor, and the temperature-dependent Ethalpy.

For the present example, material parameters from the educational database were used. The users are cautioned when using material properties from this educational database. ORNL is working on providing a reliable database with the new hygrothermal laboratory facilities. The boundary conditions acting on the building component are the temperature and relative humidity of the interior and exterior air and the rain and radiation loads, both depending on inclination and orientation of the building component.

Hereby the most important functions are explained as well as the post-process modules are discussed. The programs are also implemented for research and teaching purposes at numerous educational institutions and universities.

How can moisture in buildings be evaluated in practice? What are the basic principles behind hygrothermal simulation, what input data are required and how can the results be evaluated? In this jubilee year, Dr. It has static and dynamic modes capable of multi-zone modeling for large buildings—beneficial for multifamily projects. Quickly generates high-quality reports and graphics for effective communication with clients and stakeholders. WUFI-Passive takes the guesswork out of complicated assemblies.

Refer to this document for details and references. Assessing results requires experience and understanding of building science.

The seminars educate users about basic building physics and give confidence for handling the software.

In addition, such seminars provide information on new models and evaluation options. The online help is available in German, English, and Japanese. The multi-language material databank has about pre-defined building materials and can also accept user-defined materials.

When applicability of the Glaser-Method is questionable and for special situations e.