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Re: [EnergyPlus_Support] Triple glazing with integral blinds in the outer cavity



Are you using v8.3? I'm pretty sure that I ran a 3-ply glazing with blind on the outermost gap not too long ago without error. DesignBuilder was automatically putting the blind in the inner most gap so I changed it in the idf and ran it...it could have been 4-ply, I don't remember.

Another route may be to use the WINDOW program for your build-up, note the results and then create an equivalent assembly with 2-ply as you did with the LBL method. If the assembly is equivalent then the effects of the low-e coating is therein contained, so I don't see it as an issue.

Mit freundlichen GrüÃ?en- Sent from my iPhone (excuse the brevity)

i. A.
Jean Marais
b.i.g. bechtold
Tel.   +49 30 6706662-23

On 12.05.2015, at 12:27, "adlou92bis@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

 

Dear Energyplus forum users,


I need to model the energy impact of a triple glazing system with integrated blinds in the first gap :


Glas / gap / Blind / gap / Glas / gap / Glas.


However, I could understand from the error message that "--For triple glazing the between-glass shade/blind must be between the two inner glass layers". Which is not my case, and I cannot make the assumption that the blind is in the inner gap.


To counter this problem, I tried to reduce the last two glass layers to an equivalent layer, so that my system is reduced to a double glazing unit only (Glas / gap / Blind / gap / EquivalentLayer). For this, I followed LBL's method (http://gaia.lbl.gov/btech/papers/2804.pdf) : but it is not efficient since it assumes that there are no low-e coatings, which is neither my case.


So, I would like to ask, if you had any suggestions to counter this problem ?

This would really help.


Best regards,


Adele Robin




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Posted by: "jeannieboef@xxxxxxxxx" <jeannieboef@xxxxxxxxx>


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