WUFI

Thomas - thank you for taking the time to explain further.

Your response clarifies all.

Best wishes
James

Thanks Christian - been trying to understand what happens to a wall assembly under ISO 9705 testing...called the full room test because you line a 3.6 x 2.4 x2.4m room and turn on the burner. Temp vary a fair bit, but at the hot end they can reach 1000C.

Been are really useful learning experience ...

Ahh! Thank you learned person :D

...but one more question please. The "Temp Transport Calc" simulation appears to run ok, but when I add "Moisture Transport Calc" the temp outcomes appear not to respond?

Is this because the temp range (up to 1000) is outside the accepted range for moisture calcs ...

Hello Thomas - an erudite answer as always...thank you.

But I am still a bit :?

Does this mean that the temp values shown on the "Thermal Conductivity, temperature dependent" table and graph are determined by the method of calculation:
1 "Mean value" = temp values are mean values?
2 "Other method ...

Guten morgen Fraunhofer people :)

I have been researching temperature effects on thermal conductivity of building materials (paper released by Building Science Corp in US), and this led me to to have a look at the option for temp effects on thermal conductivity.

Available thermal conductivity data ...

Guten morgen Fraunhofer people :)

I have been using a kli file to simulate wall performance using fire test data.

The test runs for 20 minutes and records temp at 5 second intervals.

A couple of questions please:

1 KLI file inputs - is the time sequence 0.00, 0.05.....0.55, 0.60 etc or 0.55, 1 ...

Danke Christrian - for the detailed response...much appreciated, was , now

Best wishes to everyone from the far side of the world, James

Hello Manfred - Thank you for your response, I hope you are enjoying America.

I am trying to make sure I understand "how wufi thinks 8)

For example (for concrete), if I only use Temp/RH data because the slab is covered above, can I leave Liquid Trans Coeff settings as they are because there is no ...

G'day Christian- thanks for your reply... :D

To check that I understand...if there is no sun or rain exposure (building above) can I just use Temp and RH data for the Boundary Conditions and leave the Liquid Transport Coeff as they are for Concrete wc=0.5.

That is, if I don't provide data, does ...

Guten morgen Fraunhofer 8)

I have read all the concrete posting I can find, but have a question about the transition from 1) to 2) below.

1) Initial drying - for site poured concrete, in one posting using RH=97% approx as the Initial Conditions and "Concrete w/c 0.5" was suggested.

2) Ongoing ...

Thank you Christian

G'day Christian - apologies for the confusion, the suspended concrete slab has an open carpark below and an office above - it is not connected to the ground.

Thanks, James

...opps forgot to tick the "notify me" box...

Good morning

I have read Christian's comments below and would like to check that I am modelling a first floor suspended concrete slab in an office building correctly (ground = unenclosed car parking, storeys above = office space).

I am use three stages:

1) Pour to 3 month - to allow for some ...

Hello Thomas - good to hear from you...and thank you for the detailed response.