heat source within the wall

[Philip F]

hi everyone,

does anybody know, how to define a thin layer within the wall that has water characteristics. It is supposed to simulate a capillary network in the exterior walls.

I'd be glad about some ideas!! Thanks

Philip

[Christian Bludau]

Dear Philip,
heat and moisure sources can be placed in the wanted elements of the calcualtion grid. As the wall is only expressed in an one dimensional section in WUFI Plus, you only can define a moisture source parallel to the surfaces, but not perpendicular to the surfaces.
That could be expressed using WUFI 2D.
Christian

[Philip F]

Hi Christian,

maybe I need a different approach. I just created my own layer embedded in aerated concrete. Now I want to add a heat source for the whole layer (the whole layer should have a temperature of 20°C). Therefore I need to upload a file. How can I upload or create this file? I attached the screenshot for you to see.

Thank you very much for your help!

[Manfred Kehrer]

Philip,
The only way to create a heat source which keeps your layer at a constant temperature is:
1) perfom a calculation with a source
2) export the average temperature of your layer.
3) calculate externally the source/sink on an hourly bases you need to keep your desired temperature
4) recalculate within WUFI

Iterate steps 2) to 4) until your source file does not change anymore which should be at the point where your layer has the desired temperature

[Philip F]

Hi Manfred,

thanks for your answer!

Could you explain me, how I can perform step 2) "export the average temperature of your layer" ?
Or should I just take the average temperature calculated by WUFI to calculate my heat source externally? But then how does the recalculation (Step4)) work....eventually I need to import an external file to the software, right?

best regards and thanks for your help!

Philip

[Manfred Kehrer]

If you have an insulation somewhere, most likely there is not a big temp gradient within the air layer, so just use the temperature in the middle.
Yes import from file!

[Philip F]

Thanks for the quick reply!
What kind of file can be imported in WUFI?

[Manfred Kehrer]

Simple,
1st column time [h], 2nd heat source [w/m2]
Tab or space separated.

[Philip F]

thanks!
Since it's not working, I found the tutorial video on wufi-wiki: http://www.wufi-wiki.com/wufifilme/rest ... d_data.htm

But it's not running, the page is just white (reloading the page doesn't bring any change). Any chance you can send me the video or any other suggestions how I can get it run?

[Philip F]

please, I need this information to perform my simulation!! But the tutorial video online is still not working.....

Thank you very much

[mwinkler]

Dear Philip,
I'm sorry, the link to the tutorial movie was broken. We've fixed it and also updated the video content. You can find it here: http://www.wufi-wiki.com/wufifilme/tuto ... d_data.mp4

[Philip F]

Thank you very much for helping!!!!