Spectral data error: Optics5 DLL error | EN Calculations

[Michael Franco]

Hello W7 team:

I encountered this error today that I have not seen previously (log file attached) when attempting to perform EN calculations:

This error included a failure to calculate SHGC and odd figures for Tdw-ISO for all but the base '500' ID system shown below. The '500' system calculated correctly.

Context: Phius calculates climate-specific performance values for U-COG as part of its fenestration certification program. We calculate the glazing package's performance at -10°C, and then nine other sets of environmental conditions to mirror climate zones 8 down to 0.

We reference the W7 .mdb file to use Glazing System table in our calculations. The calculator we've built pulls the SHGC values based on the ID (example: 500) in order to reference the climate-specific 501...509 values for U-COG and subsequently pulls the SHGC value from the incremented ID as well. The SHGC values on "climate specific" (incremented) records (501...509) are not supposed to differ from the "base" record, '500' in this instance.

You can see that record 500 calculated correctly:

...but 501 through 209 did not (501 below as an example):

W7 Settings: "Thermal Calcs" are set to 'EN673'. Database for optical data is the IGDB.

We are referencing what I believe to be a modified version of the LBNL Standards File 'prEN_410.std' which I can provide via a one-on-one email if necessary. I can also provide the Phius environmental conditions library that is in-use, though I'm not sure exactly where the issue resides.

We did not encounter this error on any of our other glazing packages for this simulation; we built eight glazing systems in total, and the other seven calculated as expected.

Thank you for any assistance you can provide.

Best regards,

Michael Franco

Phius (Passive House Institute US)

[Jacob C. Jonsson]

Hi Michael,

Looking at the log file it looks like
it is looking for the standard file in
this folder:
C:\Users\Public\LBNL\WINDOW7.8\

Rather in where the standards are installed
by default:
C:\Program Files (x86)\LBNL\LBNL Shared\Standards


Please try copying the missing file
prEN 410 Table 2 AM1_0.ssp
from the default folder to the one in the error
message and see if that solves it.

Best,
Jacob

On 2/19/2024 1:42 PM, Michael Franco wrote:
> Hello W7 team:
>
> I encountered this error today that I have not seen previously (log file
> attached) when attempting to perform EN calculations:
>

> w7-errror-optics5dll.png
>
> This error included a failure to calculate SHGC and odd figures for
> Tdw-ISO for all but the base '500' ID system shown below. The '500'
> system calculated correctly.
>

> w7-errror-shgc.png
>
> *Context: *Phius calculates climate-specific performance values for

> U-COG as part of its fenestration certification program. We calculate
> the glazing package's performance at -10°C, and then nine other sets of
> environmental conditions to mirror climate zones 8 down to 0.
> We reference the W7 .mdb file to use Glazing System table in our
> calculations. The calculator we've built pulls the SHGC values based on
> the ID (example: 500) in order to reference the climate-specific
> 501...509 values for U-COG and subsequently pulls the SHGC value from
> the incremented ID as well. The SHGC values on "climate specific"
> (incremented) records (501...509) are not supposed to differ from the
> "base" record, '500' in this instance.
>
> You can see that record 500 calculated correctly:

> w7-errror-500.png
>
> ...but 501 through 209 did not (501 below as an example):

> w7-errror-501.png
>
> *W7 Settings: *"Thermal Calcs" are set to 'EN673'. Database for optical

> data is the IGDB.
> We are referencing what I believe to be a modified version of the LBNL
> Standards File 'prEN_410.std' which I can provide via a one-on-one email
> if necessary. I can also provide the Phius environmental conditions
> library that is in-use, though I'm not sure exactly where the issue resides.
>
> We did not encounter this error on any of our other glazing packages for
> this simulation; we built eight glazing systems in total, and the other
> seven calculated as expected.
>
> Thank you for any assistance you can provide.
>
> Best regards,
>
> Michael Franco
> Phius (Passive House Institute US)
>

> --
> You can view the WINDOW forum online at:
> https://groups.google.com/g/berkeley-lab-window
> <https://groups.google.com/g/berkeley-lab-window>
> ---
> You received this message because you are subscribed to the Google
> Groups "Berkeley Lab WINDOW" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to berkeley-lab-wi...@googlegroups.com
> <mailto:berkeley-lab-wi...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/berkeley-lab-window/25396796-8ef4-4cf5-8c00-74a59e79e100n%40googlegroups.com <https://groups.google.com/d/msgid/berkeley-lab-window/25396796-8ef4-4cf5-8c00-74a59e79e100n%40googlegroups.com?utm_medium=email&utm_source=footer>.

[Michael Franco]

Thank you, Jacob! I moved the standards file from the 'Public' folder to 'C:\Program Files (x86)\LBNL\LBNL Shared\Standards' and the calculation worked as expected.