![]() ![]() The thermal situation affects moisture transport. In addition, thermal and hygric behavior of a building component are closely interrelated as well as an increased moisture content favors heat losses. Elevated surface moisture levels in living rooms can lead to hygienic problems and health risks due to mould growth. Permanently increased moisture content in the component may result in moisture damages. Hygrothermicsīesides the thermal properties of a building component and their impact on heating losses, its hygric behavior has to be considered, too. The underlying model has been validated for over 20 years. WUFI-ORNL/IBP is based on the newest findings regarding vapor diffusion and liquid transport in building materials. WUFI - Oak Ridge National Laboratory (ORNL)/Fraunhofer Institute for Building Physics (IBP) is a menu-driven PC program which allows realistic calculation of the transient coupled one-dimensional heat and moisture transport in multi-layer building components exposed to natural weather. Educational PC Programs for Calculating the Coupled Heat and Moisture Transfer in Building Components It is based on the newest findings regarding vapor diffusion and liquid transport in building materials and has been validated by detailed comparison with measurements obtained in the laboratory and on outdoor testing fields. WUFI - Oak Ridge National Laboratory (ORNL)/Fraunhofer IBP is a menu-driven PC program which allows realistic calculation of the transient coupled one-dimensional heat and moisture transport in multi-layer building components exposed to natural weather. ![]()
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