WUFI

Hi Thomas, I guess you like to simulate the roof construction underneath instead the explicit PV installation. At the moment we are running some field tests to evaluate the behavior of sloped roof constructions with PV-installation. But up to now the trails still running, so we can give you only lit...

Hallo, genau für diesen Fall gibt es einen Leitfaden für die hygrothermische Simulation von hinterlüfteten Steildächern mit effektiven Übergangsparametern. Diesen finden Sie hier: https://wufi.de/de/service/downloads/ oder direkt hier: https://wufi.de/literatur/Koelsch-Leitfaden_Belueftete_Dachkonst...

Hi Alberto, I´m not sure what you didn’t understand, so I try to clarify. Starting from the exterior side of the construction, the assembly can be look like this: - Brick wall (or other masonry) 0.1025 m - Air Layer 50 mm 0.001 m Here you set the 1% driving rain source - Air Layer 50 mm, without add...

Hi Mouse, I try to shortly explain some of your points direct below your statements. But on further examination the technique, while meeting its design goals, does not seem to fulfil its potential. But I may of course have misunderstood. On reflection it seemed to me: Yes you are right, there are mu...

Hi Alberto, I try to answer some of your questions. 1. The answer is: It depends on what do you want to do. Where in your construction is the air layer located and do you need to evaluate the water content inside the air layer? If you model an air layer behind e.g. an internal gypsum board, where th...

The air change rate in ventilated claddings strongly depends on the opening on top and bottom. Most of the time no information about these openings and the flow resistances are available. In this case we simulate two different air change rates. One very small (e.g. 0.5 1/h) and one strong (e.g. 30-1...

Hi Madonna, the problem with the infiltration from the outside are the pressure differences, mainly wind influenced. Here it is necessary to set the effective pressure differences in relation with the airtightness of the building envelope to get the right amount of the airmassflow leading to humidif...

Hallo Fabienne, Die grundsätzliche Vorgehensweise bei der Simulation eines Steildachs ist in diesem Leitfaden beschrieben: https://wufi.de/literatur/Koelsch-Leitfaden_Belueftete_Dachkonstruktionen_de.pdf oder: https://wufi.de/literatur/Koelsch-Leitfaden_Belueftete_Dachkonstruktionen_en.pdf Auf eine ...

Hi, you can check this site: http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/region=6_europe_wmo_region_6/country=IRL/cname=Ireland but please check this site first because there is no rain data contained: http://www.wufi.de/frame_en_wetterdaten.html The other option is to pu...