HAM: UMIDUS

"Models coupled heat and moisture transfer within porous media, in order to analyze hygrothemal performance of building elements when subjected to any kind of climate conditions. Both diffusion and capillary regimes are taken into account that is the transfer of water in the vapor and liquid phases through the material can be analyzed. The model predicts moisture and temperature profiles within multi-layer walls and low-slope roofs for any time step and calculates heat and mass transfer. Umidus has been built in an OOP language to be fast and precise easy-to-use software.

Umidus is especially useful for studies of hygrothermal behaviours of building envelope and roofs. Users can quickly build different construction elements and compare them in terms of heat flux, mass flow and moisture content and temperatures profiles. Reports of building parameters and graphs of results can be effortlessly exhibited. "

Description at Home Energy (hem.dis.anl.gov/eehem/01/010103.html)

"UMIDUS. (This new release is free to download.) Developed by a university researcher at the Thermal Systems Laboratory of Pontifical Catholic University of Parana, Brazil, (PUCPR/CCET) UMIDUS may prove useful for analyzing and predicting how building envelope and roof assemblies materials respond to changes in heat and moisture in the environment (termed: "hygrothermal behavior").

UMIDUS, like MOIST-3, models the one-dimensional heat and moisture transfer within porous media (this includes most building products), in order to analyze hygrothemal performance of building elements when subjected to any kind of climatic conditions. Users can build models of different construction elements and then compare heat flux, mass flow and moisture content, as well as temperature profiles. Building element descriptions include thickness, layers, azimuth, and tilt. Hygrothermal properties including vapor and liquid transport coefficients. Construction details are entered in the "Construction Element" window. Each element layer enters as a table row. Each element can have a maximum of ten layers. The layers are chosen from 20 materials listed on a pull-down menu.