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 Post subject: Wufi-Bio Inputs
PostPosted: Tue Dec 26, 2017 2:20 am -1100 

Joined: Tue Dec 26, 2017 1:44 am -1100
Posts: 1

I have a small doubt about the WUFI-Bio inputs.

Acording to Sedlbauer (2001), the spores can absorb umidity from both the air as well from the substrate.

Thats why he considers the model spore between two arbitrary condition like in the picture attached, right?

But when we enter the conditions into the Wufi-Bio, importing from the Wufi-Plus, it includes only one row of RH and Temperature. Is this right?

Another question, when Wufi-Plus exports the temperature and RH from the surface of a wall, the RH is calculated based only on the wall surface temperature (and of course the umidity of the interior air)? Or the transport trought and the water content of the wall plays a role?

Thanks for the helping.

model spore.jpg
model spore.jpg [ 56.89 KiB | Viewed 70 times ]
 Post subject: Re: Wufi-Bio Inputs
PostPosted: Mon Jan 08, 2018 12:43 am -1100 
WUFI SupportTeam IBP
WUFI SupportTeam IBP

Joined: Wed Jul 11, 2012 11:21 pm -1100
Posts: 149

the picture you refer to is figure 37, right? I've just added the whole picture.

The biohygrothermal model is based on the WUFI calculation to calculate the moisture content of the spore. As far as i know the figure expains that even if the spore touches the buidling material, the hygrothermal boundary conditions at the surface influence the spore, but the the spore not the material. And the sperical spore is converted to this one-dimensional layer structure. It's one set (Temperature and Humidity) of boundary conditions for the spore calculation on "both" sides, respectively the spore septum.

WUFI Plus can do the dynamic hygrothermal simulation of the building components. So the exported component surface conditions (to WUFI Bio, for example) are related to the interior conditions, but also the coupled heat and moisture transport throught the component.

File comment: Sedlbauer, 2001, Prediction of mould fungus formation on the surface and inside building components
Spore.PNG [ 134.68 KiB | Viewed 33 times ]
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