Hi,
We are running WuFi Pro 6.8 to model new build external wall models which are made up of an insulated timber frame with an OSB sheathing faced in a breather membrane and a mineral fibre cavity insulation slab, then a 50mm ventilated cavity and an external facing brick skin. The timber frame is insulated with Frametherm 32 glass fibre slabs and is then faced internally in 50mm PIR board faced in an Intello Plus airtightness barrier. A service zone is located internally faced in plasterboard. Initially the balance 1 & 2 results were spot on and the water content and RH results looked believable however the Thermal Transmission tool does not then operate and a dialogue box appearing with the message 'Floating point division by zero' No matter what we have tried nothing has so far made a difference. Can anyone suggest how this can be fixed please?
Thermal Transmission Tool Failure
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Rheumer Rachel
- WUFI User
- Posts: 1
- Joined: Thu Nov 21, 2024 4:33 am -1100
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Christian Bludau
- WUFI SupportTeam IBP
- Posts: 1242
- Joined: Tue Jul 04, 2006 10:08 pm -1100
- Location: IBP Holzkirchen, the home of WUFI
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Re: Thermal Transmission Tool Failure
Hi Rachel,
that might be related to the boundary conditions. What climates did you use outside and inside?
The Thermal Transmission Tool is in some way a transient calculation with the steady state formulas for the U-Value. The work with a temperature gradient from the inside to the outside. So if the gradient is turned around for example, that might cause problems.
Christian
that might be related to the boundary conditions. What climates did you use outside and inside?
The Thermal Transmission Tool is in some way a transient calculation with the steady state formulas for the U-Value. The work with a temperature gradient from the inside to the outside. So if the gradient is turned around for example, that might cause problems.
Christian