WUFI

Hello James, you can use the "Surface transfer coefficient / Interior surface / Sd value" to account for the additional resistance for the water vapor flow due to the paint on the interior surface. The value highly depends on the used kind of paint and manufacturer. Therefore I recommend t...

Hallo Michael, herzlich willkommen in der WUFI Plus Gemeinde. Für die von Dir beschriebene Problemstellung ist davon auszugehen, daß die Bedingungen in den angrenzenden Zonen hinreichend genau geschätzt werden können. Deshalb würde ich zu Beginn nur den zu untersuchenden Raum modellieren und für die...

Sehr geehrter Herr Grilz, die Messung des SHGC läßt verschiedene Wertungen bei unterschiedlichen Einstrahlungsrichtungen zu. Der hemisphärische SHGC bezieht sich auf den Diffusstrahlungsanteil. Dieser Wert ist gemittelt über alle Einstrahlungsrichtungen. Der reguläre SHGC (oder der winkelabhängige) ...

Sehr geehrter Herr Panic, Gebäude über 5 m Höhe sind über den 3-D Editor manuell einzugeben. Es ist dabei zu beachten, dass die Innenraumbedingungen nur "in der Mitte des Raumes" berechnet, aber auf alle Bauteile als Randbedingung angewendet werden. In Realität wird sich in höheren Gebäude...

Hallo Irina, nachdem das optionale Klima für die Bedingungen an den Erdreich berührenden Bauteilen in "Optional Climate" festgelegt wurden müssen diese noch auf die betroffenen Bauteile angewendet werden. Hierzu muß die entsprechende Komponenten ausgewählt werden und im Tab "Surface&q...

Please work through the first steps introduction at
http://www.wufi-wiki.com/mediawiki/inde ... irst_Steps
Especially in "Step 6: Setting of Inner Loads (Occupancy Schedule)" it is explained how to create schedules - this also applies to the set-point schedules.

Dear Bernd,

there was really a problem with reading inner sources from file in older WUFI Plus Versions, but this bug is fixed now. Please send an email to hilfe@wufi.de to get a link for downloading the bugfixed version.

Best regards
Florian

Hello, without knowing your exact model it is hard to assess possible problems. Please check the provided weather file - and check the surface resistances as well as the absorption/emission coefficients. In a combination with high absorption coefficients and high exterior surface resistances a tempe...

The frame factor is the ratio of transparent area of your window to the whole window. The U-factor in WUFI Plus is the overall U-factor of the whole window (glazing and framing). So for your heat loss/gain the whole window area is multiplied with the U-factor. Your solar gains on the other hand can ...

Dear Mr. Panic,

please change the view mode from "Normal" to "Print Layout" and the plot buttons will no longer be blocked, thus plotting of the results will be allowed.

You can also have a look at
http://www.wufi-wiki.com/mediawiki/inde ... .X:Results
on how to do it.

You can export temperature and relative humidity data and calculate the dew point temperature out of that data. A direct dew point temperature export is not available.

For the calculation of the total resistance in WUFI Plus the thermal conductivity of the dry material is used. WUFI Pro takes the influence of humid materials into account for the overall R-value calculation.

The total water content in WUFI Plus is in the units kg/m³ - which is different to the interpretation in WUFI Pro (see Thomas reply). So please multiply the result of WUFI Plus by your component thickness (or divide the result of WUFI Pro by the component thickness) to compare the results of the two...

Do you try to simulate the roof assemblies in WUFI Pro or in WUFI Plus?
Without your input file it is not possible to assess why you get such different total water contents.

You can export the water content in layers by checking the box "retain calculation results" in the "Report: Data & Results" folder in the component dialog previous to the calculation. After the simulation is finished, all temperature, relative humidity and water content resul...