[esp-r] Re: low with argon fill

[Achim Geissler]

Dear Arianna

where did you take the U-value you give from? If you see a reduction in heating load, the U-value used seems to be O.K. If you are using standard TMCs, "low e" or "argon" is only a name and does not have any real influence on the U-value. This is set by the resistance of the gap(s) between the panes of an IGU.

In the construction data base, you can see the U-value when you edit the construction, e.g. change the resistance of the gap. Also, you could check via QA report.

Best
Achim



On Jun 15, 2011, at 4:07 PM, A.Sdei at brighton.ac.uk wrote:

> Dear All,
>  
> I am modelling some low-e + argon gas filled windows with esp-r. I change the database settings from ordinary double glazing to low-e + argon gas filled. The U-value increases from 2.8 to over 5. The results are fine (I can see a reduction of heating load) and I am curious to know what is going on there and if I can change the U-value. Does anyone know? Thank you,
>  
> Regards,
> Arianna  
> 
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achim.geissler at intergga.ch




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