WINDOW Software Downloads

Version 7.7.01 Beta
Released: November 12, 2018

Release Notes:

Installation Notes

This version will not update WINDOW 7.6 versions -- it makes a completely new version

When you install this new version of WINDOW, a completely new set of directories is created, so that you can have other versions (WINDOW 7.4 and 7.6) installed at the same time. 

Redistributable Packages/Libraries that MUST BE installed before this version will run

It is necessary to download and then install the following "redistributable" software packages in order for this version of THERM to run.

If you have any other problems or questions about the installation, email WINDOWHelp@lbl.gov

Enhancements

Compiled with updated libraries

WINDOW (and THERM) were compiled with Visual Studio 2017 and Intel Fortran Composed XE 2018. Hence the need to install these as redistributables when installing this new version

Better Scaling on high DPI (resolution)  monitors

Using the newer Microsoft Visual C++ components allowed better scaling on high resolution monitors. Now WINDOW list views are scaled better so that they are (hopefully) readable.

Glass Library ID Limit of 65000 no longer exists

When importing a glass layer from Optics, WINDOW was restricting the ID to a value no larger than 65000. This limit no longer exists. 

Approval symbol now displayed for Shading Systems in the Glazing System Library

The "approval" symbol (# for NFRC, @ for AERC) is now displayed for records in the Glazing System Library.

Vertical and Horizontal blinds

EnerygPlus now uses different algorithms for the thermal calculations of vertical and horizontal slatted blinds. This resulted in

  • Additions to the Energy Plus BSDF IDF file from WINDOW to reflect these changes

Eliminated calculation time estimate for genBSDF calculations

In the Shading Layer Library when Type = THERM, when you click the Calc button, the program generates a "genBSDF" file that can take the program a long time to generate (many minutes). The program used to try to estimate the time it would take to do this calculation; that estimation just added yet MORE time to the simulation (!), so that estimate has been eliminated from the calculation process. Just know that calculating the genBSDF files can take a long time.

Bug Fixes

Chromogenics calculations fixed

Previous versions resulted in different results for Chromogenics glazing systems in List and Detail view in the Window Library. This has been fixed.

Window Library

  • Changing the name of the Window caused the program to invalidate the results. This has been fixed -- the results remain even after a name change. 

Shading Layer Library

  • The name of the record in the Shading Layer Library would become blank after browsing to a THERM THMX file (when Type = THERM THMX). This has been fixed. 

  • The interactions between fields when defining a Venetian blind (horizontal or vertical) have been refined. For example, some fields would appear to be editable, when actually they were not, based on how the other inputs were configured. Hopefully, this screen is now clearer in terms of what can be edited. Feedback (WINDOWHelp@lbl.gov) is always welcome. 

  • Calculations for between glass venetian blinds have been changed to use the Waterloo method for all cases (regardless of gap with between the blind and the glass layers) with the SDScalar coefficients set to 0.7 (rather than the default of 1.0). This results in better correlation to our test results. 

Glazing System Library

  • The program would not display the Radiance results after finishing the calculation unless you moved to another library and back again. This has been fixed.

  • In the Detail view, the IG Height and IG Width boxes were not big enough to show all the significant digits. This has been fixed.

Gap Library

  • Feedback boxes displaying the values for Coefficients were not big enough to show all the significant digits of the values. This has been fixed. 

 

Comparisons with Previous Versions

  • 100 glazing system set comparison

    • Berkeley Lab WINDOW 7.4.14 vs Berkeley Lab WINDOW 7.7.01 [PDF]

Version 7.6.04
Released: December 08, 2017

Release Notes:

 

Installation Issues

This version will update previous versions of WINDOW 7.6

When you install this new version of WINDOW, a completely new set of directories is created, so that you can have other versions (WINDOW 7.4 and 7.5) installed at the same time. 

Error "The installation of Microsoft Visual C++ 2015 Redistributable Package (x86) appears to have failed"

When you are installing WINDOW, if you get a message at the beginning of the installation "wizard" to Install "Microsoft Visual C++ 2015 Redistributable Package (x86)", click the Install button on that screen.

The installation will try to install that package, and if it fails, a message will appear saying that the installation has failed. It will ask if you want to continue the installation. Click the Yes button, and the WINDOW installation should continue without further incident, and WINDOW should run without any problems.

If you have any other problems or questions about the installation, email WINDOWHelp@lbl.gov

Bug Fixes

Revision to slat shade thermal openness (A_h) equation

Modifications were made to implement correctly the slat spacing used in Laouadi's paper, as well as account for the slat thickness when tilted, which that paper does not account for. This is only applicable when shades are full tilted (the impact is essentially zero for all other cases). It also has a very minor impact on SHGC since solar dominates there. 

Visible and solar properties were mixed up in some instances

This has been fixed.

Comparisons with Previous Versions

  • 100 glazing system set comparison
    • Berkeley Lab WINDOW 7.4.14 vs Berkeley Lab WINDOW 7.6.04 [PDF]
Version 7.4.14
Released: December 09, 2016

Release Notes:

Enhancements

Increase Frame Glazing System Tolerance upper limit to 2000%

In the Options tab of Preferences, it is possible to set the Frame Glazing System Thickness Tolerance %. However, the allowed value had an upper limit of 100%, which was not sufficient for modeling storm windows, which sometimes need that value to be > 1000%. Therefore, the upper limit of this value was increased to 2000%.

Bug Fixes

Extinction Coefficient Calculation

This version fixes a bug related to calculating the extinction coefficient (equation 7.2.1g in the WINDOW 4 Documentation of Calculation Procedures) in the angle dependence calculation for monolithic glass layers. The limit of 1E-10 is replaced with 1E-10.

Non-Convergence Errors for Some Glazings Systems with Shades

In previous versions of WINDOW the program would report non-convergence errors for glazing systems with shading systems. This has been fixed.

Preference Setting for "Don't Show CR Warning Messages Didn't "Stick"

In previous versions of WINDOW, checking the "Don't show CR warning messages" didn't stick between program sessions. This has been fixed.

Comparisons with Previous Versions

  • 100 glazing system set comparison
    • Berkeley Lab WINDOW 7.4.14 vs Berkeley Lab WINDOW 7.4.06 [PDF]
  • 100 glazing system set comparison
    • Berkeley Lab WINDOW 7.4.14 vs Berkeley Lab WINDOW 6.3.74 [PDF]
  • Set of whole products, specular glazing systems
    • Berkeley Lab WINDOW 7.4.14 / THERM 7.4.04 vs Berkeley Lab WINDOW 7.4.06 / THERM 7.4.03 [PDF]