[Bldg-sim] Desired Parameter Inputs for Window from Manufacturer

[Alex Krickx]

Hi everyone,

I wanted to thank you all for your input. I expect that we will have these tools/data on our website soon. If you want to know when they're posted, please email me.

Also feel free to email me other thoughts on which data is most useful to you (either comments or additions to what's already been sent around) and I'll see if I can't get that to you or up on our website for all to see.

Thanks again! I hope that the end result of this will be useful to the modeling industry.

Cheers,
Alex Krickx


Alex Krickx
Building Energy Specialist
[cid:image001.jpg at 01CAC03B.28935C70]
1250 Elko Dr, Sunnyvale, CA 94089
(t) 408.541.8124

Warning: The information contained in this e-mail may be privileged attorney-client communications or attorney work product and/or proprietary and confidential.  If the reader of this message is not the intended recipient then you have received it in error and any review, distribution or copying of this message is prohibited and you are to notify us immediately by reply e-mail and delete the original message immediately.

From: D. Charlie Curcija [mailto:curcija at designbuildersoftware.com]
Sent: Tuesday, March 09, 2010 6:38 AM
To: Alex Krickx; bldg-sim at lists.onebuilding.org
Subject: RE: [Bldg-sim] Desired Parameter Inputs for Window from Manufacturer

Dear Alex,

The best way (currently) to supply information about your windows for use in energy simulation programs would be to generate DOE-2 and EnergyPlus report files from WINDOW program.  One caveat is that DOE-2 report file cannot be generated for the real window frames, but you can use average U-factor for your actual frames and create a generic frames that can be used in DOE-2 report.  That way you can circumvent this deficiency in DOE-2 functionality.  EnergyPlus report does not have this deficiency.  For other simulation programs, it is hard to say what they would need, but generally the following is important information about a window (all included in EnergyPlus report file):


-          Glazing

o   Center of glazing system conductance

o   Center of glazing U-factor

o   Convective and radiative portions of outdoor and indoor film coefficients

o   Number of glazing layers

o   Center of glazing SHGC as a function of angle of incidence, including hemispherical

o   Center of glazing T_sol as a function of angle of incidence, including hemispherical

o   Center of glazing Rf_sol as a function of angle of incidence, including hemispherical

o   Center of glazing Rb_sol as a function of angle of incidence, including hemispherical

o   Center of glazing T_vis as a function of angle of incidence, including hemispherical

o   Center of glazing Rf_vis as a function of angle of incidence, including hemispherical

o   Center of glazing Rb_vis as a function of angle of incidence, including hemispherical

o   Center of glazing Layer absorptances

o   Size of the transparent area (Width and Height)

-          Frame:

o   Projected framing depth for each cross-section

o   Outside projection

o   Conductance

o   Edge of glazing conductance

o   Surface absorptivity

o   Surface emissivity

It would be also helpful if detailed layer by layer properties of glazing is supplied (i.e., solar-optical spectral properties of individual layers of glazing, meaning solar-optical properties as a function of wavelength, each glazing layer thickness, conductivity and two surface emissivities), gap fill thermo-physical properties and gap widths.

D. Charlie Curcija
DesignBuilder Software
16 Bridge St.
Millers Falls, MA 01349

Tel: (413) 256-4647
Fax: (413) 256-4823
cell: (413) 575-3487
email: curcija at designbuildersoftware.com<mailto:curcija at designbuildersoftware.com>
web: http://www.designbuildersoftware.com<http://www.designbuildersoftware.com/>

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From: bldg-sim-bounces at lists.onebuilding.org [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Alex Krickx
Sent: Monday, March 08, 2010 7:13 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Desired Parameter Inputs for Window from Manufacturer

Hi all,

My company is looking at making available some BIM models as well as compiling data on our windows to help energy modelers analyze our windows and glass into buildings.

The ones that seem most obvious to me are:

 *   COG U-factor
 *   Full Frame U-factor
 *   COG SHGC/SC (do people prefer one or are both useful?)
 *   Full Frame SHGC
 *   VT
 *   Thickness

I feel like some software requires more detailed inputs, so I've come up with the additional categories:

 *   Visible Transmittance by color
 *   Visible Reflectance Front and Back
 *   Solar Transmittance
 *   Solar  Reflectance Front and Back
 *   UV transmittance

Please feel free to add and comment on this list. Our purpose of providing this data is to make consultants' lives easier so let me know if you think of anything that would be helpful. Thanks for your input!

Regards,
Alex Krickx


Alex Krickx
Building Energy Specialist
[cid:image001.jpg at 01CAC03B.28935C70]
1250 Elko Dr, Sunnyvale, CA 94089
(t) 408.541.8124

Warning: The information contained in this e-mail may be privileged attorney-client communications or attorney work product and/or proprietary and confidential.  If the reader of this message is not the intended recipient then you have received it in error and any review, distribution or copying of this message is prohibited and you are to notify us immediately by reply e-mail and delete the original message immediately.


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