Optics5 Issues for Laminates and Applied Films
Last update: 02/09/2007 05:01 PM
Laminates
| # | Issue | Description/Resolution | Who | ||||||||||||||||||||||||||||||||||||||||
| 1 | Missing DuPont interlayers | These interlayers were
submitted as laminates (for IGDB 15.0) that cannot be de-constructed
by Optics5 to produce interlayers, so they are not in the Optics5
list of interlayers.
DuPont is in the process of resubmitting their data to LBNL and the IGDB. |
DuPont LBNL |
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| 2 | Generic 3 mm / 6 mm clear / bronze glass | Can you use generic
clear and bronze 3 mm and 6 mm glass for laminates for SHGC
calculations ?
We think yes, but need to verify this with NFRC |
NFRC Procedures addendum? |
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| 3 | 3 layers of 30 mil clear
vs 2 layers of 30/60 mil clear vs 1 layers of 90 mil clear |
Will all these
combinations of interlayers (from the same manufacturer) which
result in the same overall interlayer thickness, result in the same
optical properties assuming the same substrates on either side of
the interlayers? LBNL to determine this and report back. |
LBNL | ||||||||||||||||||||||||||||||||||||||||
| 4 | Naming convention for multiple interlayers that are the same | proposal is to say "number of layer" with "x", such as "3x030cl3_0.soi" for 3 layers of interlayer "030cl3_0.soi". | NFRC Procedures addendum? |
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| 5 | Naming convention for layers that are flipped | add an "F" to the end of
any layer that is flipped such as: 2026F/015_8050soi/015_8250.soi/9801.usr |
NFRC Procedures addendum? |
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| 6 | Maximum number of interlayers | Optics5 will allow 30 interlayers, but manufacturers (such as Solutia) recommend no more than 4. | LBNL Knowledge Base |
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| 7 | Editing laminates that are in the IGDB | It is possible to edit
some laminates that are in the IGDB (this depends on how the
manufacturer submitted the data, ie, did they provide enough
information for Optics5 to deconstruct the layers).
However, LBNL recommends that rather than editing an existing laminate in the IGDB, that the new laminate is constructed from "scratch". LBNL to determine if this is an issue by comparing the results of both methods. |
LBNL Knowledge Base |
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| 8 | Nominal vs real thickness in WINDOW5 Glass Library | There is a minor but
potentially confusing bug in WINDOW 5 as follows:
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LBNL Knowledge Base |
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Applied Films
| # | Issue | Description/Resolution | Who |
| 1 | Front / back application of the film | does Optics5 know which side should
go to the outside, ie, the glue side next to the glass, the
exterior/coated side facing out LBNL to investigate and write up answer on Knowledge Base |
LBNL Knowledge Base |
| 2 | Changing the side the applied film is applied to after it is saved | can't change it (as far as we can tell so far) | LBNL Knowledge Base |
| 3 | Interior/Exterior application of films | Applied films in general are designed to be applied to either an exterior or interior glass surface, but not both. Optics5 does not capture that information, so the simulator needs to make sure that the side the applied film is on is appropriate to the application. However, the glass layer with the film can be "Flipped" in WINDOW5, so it might not be an issue that you have to deal with in Optics5. | LBNL Knowledge Base |
Error Messages
| Error Message | Description/Resolution |
 |
Error message can be ignored, as the wavelength range of the calcualtion we are interested in is 0.3 - 2.5 microns (or 300 - 2500 nanometers), so this range truncation is within the calculation range we want. |