WINDOW Software Downloads

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 Visuall 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.

Version 7.6.02
Released: November 17, 2017

Release Notes:

 

Installation Issues

 

Previous versions can remain installed on your computer

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 Visuall 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

 

Enhancements

 

Protected records can now be deleted from the Shading Layer Library

In a similar fashion to how the Glass Library works, it is now possible to delete protected records from the Shading Layer Library

The airflow algorithms for shading systems has been updated

This may result in significant differences in the results for some shading systems. 

WINDOW Command Line for exporting database exports all child record data

The WINDOW Command Line for exporting database tables data to an XML file has been changed to now export all child record information. The version number used to generate the data is also being stored in the XML file

Effective Openness Fraction Changed to Permeability Factor

In the Shading Layer Library, the Effective Openness Fraction has been changed to Permeability Factor. It is no longer editable for protected records, as it is being calculated automatically by WINDOW. 

All the XML files for CGDB 10.0 have been changed to reflect this name change.

The program is backward compatible with old XML files that still have that value set to Effective Openness Fraction.

Preview is disabled for Report = AERC BSDF IDF 

This replicates the behavior of other Energy Plus IDF reports

 

Bug Fixes

 

IGDB Update didn't always add Filename

In the previous version of WINDOW, when the program automatically updated the Glass Library from the IGDB database, the program didn't always add the proper data to the Filename field. This has been fixed.

U-factor and SHGC Temperatures were wrong for closed Venetian blinds

This has been fixed in this version.

Woven Shade Openness Factor was not being correctly calculated.

This has been fixed in this version.

Vertical blinds now use the same algorithm used for horizontal blinds

This has been addressed in this version.

Venetian Blind thickness correctly displayed with units set to IP

In previous versions, the Venetian Blind thickness displayed in the Shading Layer Library Detail View was not correct when the program was in IP units. This has been fixed in this version.

WINDOW IGDB update doesn't always include filename

In previous versions, when WINDOW updated the Glass Library for the latest IGDB, the filename was not always imported, and was therefore blank. This has been fixed in this version. 

 

Version 7.5.15
Released: March 08, 2017

Release Notes:

Enhancements

Deleting Protected Records in Shading Layer Library

It is now possible to delete protected records in the Shading Layer Library, in a similar fashion to deleting protected glass layers in the Glass Layer Library. However, the program does not currently delete the associated records from the Shade Material Library or associated XML files from the XML directory.

Bug Fixes

Shade Material Name Changed On Import of Shading Layer Library

When importing a Shading Layer Library record from another database, such as the CGDB database, WINDOW would change the name of the referenced Shade Material in the imported file. The program now keeps the original Shade Material name from the originating library.

Known Issues

Deleting Protected Shading Layer Library Records

The program allows users to delete protected Shading Layer Library records, but it does not delete associated records from the Shade Material Library or associated XML files from the XML directory.

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]
Version 6.3.74
Released: February 14, 2012

Release Notes:

If you find bugs, or if you think these have not been fixed, please do not hesitate to send an email to WINDOWHelp@lbl.gov to report your findings. Getting feedback from users is how we improve the program.

Program Changes

From Berkeley Lab WINDOW 6 Research Version (6.1.02)

  • Fixed a bug related to fritted glass

From Berkeley Lab WINDOW 6 Research Version (6.0.32)

  • Woven Shades were added as a shading type in the Shading System Library.
  • Fritted Glass was added as a shading type in the Shading System Library
  • In File, Preferences, Thermal Model, an option was added for a Convective Scalar model. See the manual for a description. This will change the answers for calculations with shading systems.

From Previous Version of Berkeley Lab WINDOW 6 Research Version (6.0.28)

  • The directional diffuse model for venetian blinds is implemented in this version. The previous version defaulted to 'uniform diffuse' as a method of where the diffuse radiation that hits the slats gets transmitted.
  • Fixed the order in which the venetian blind data gets passed to Berkeley Lab WINDOW 6. This doesn't change hemispherical values, but does change angular output to the correct values
  • Documentation of the .csv file (created by Berkeley Lab WINDOW 6 for the MatrixReader.xls spreadsheet) is added to the technical documentation appendix
  • Modifications were made to the quarter and half basis XML files in order to fix some bands where the mid-point was not correctly defined

Window Library: Window Types

In previous versions of Berkeley Lab WINDOW 6.3, there were two different Window Type lists, with conflicting ID numbers, which resulted in the possibility of a Window Library made with one set of Window Types would become corrupted (the wrong Window Types assigned) if the database records were imported into a another database with the different Window Type list.

To solve this problem, we have added a database "migration" with this version of Berkeley Lab WINDOW — when it opens any older database, it will update the Window Types list to have the choices (and IDs) shown below and then it will also update all the Window Library records to map to the new Window Types based on what the records were set to originally.

Here is the new Window Types list with the new IDs.

Although we have tested this feature, you may want to make a copy of your original database before migrating it to the new version, and then after the migration, check all the windows carefully to make sure that the Windows Types were migrated successfully.

Email WINDOWHelp@lbl.gov if you experience any issues with this migration.

Updating From a Previous Version of Berkeley Lab WINDOW 6.3

When installing the program and there is a previous version already installed, the program does not update (or overwrite) the standard W6.mdb file that is already exists from the previous version. This will mean that when you first start the new version after an update, the program may ask to update the database, meaning that it is updating your database from the previous version. This will not overwrite your existing data, it just brings the database structure up to the current version.

Fixed Bugs

Calc Problem Using Glass Library NFRC ID Greater Than 32000

If a glass layer is imported from the Optics User Database with an NFRC ID greater than 33000, when that glass layer is used in a glazing system calculation, the program will say that the layer has been deleted and will not complete the calculation. The work around is to use NFRC ID values less than 32000.

Calculating Multiple Records in the Window Library List View

The program was not calculating the results properly from the Library List View if multiple records were selected for calculation and the Frame or Divider THERM files had changed. This has been fixed.

EnergyPlus Output File Problem for Gas Definition

The file generated for the EnergyPlus program (generated from the Window Library) contains lines in the Gas Data section that are more than the 132-character limit in the EnergyPlus routine that reads the file. The file is too long because of extra spaces between the labels in the heading line, as well as the data in the line following the heading. The work-around is to edit the EnergyPlus file and delete extra spaces. Only one space between each value or label is required.

GAS DATA : GasName Fraction MolWeight ACond BCond CCond AVisc BVisc CVisc ASpHeat BSpHeat CSpHeat

System1 Gap1 : Air 1.0000 28.97 0.002873 7.76e-005 0 3.723e-006 4.94e-008 0 1002.74 0.012324 0

EnergyPlus Output File Problem for Uncalculated Record

The file generated for the EnergyPlus program (generated from the Window Library) may contain wrong values if the file is generated on a record in the Window Library that has not been calculated (i.e., there are "?" in the Results section). If the EnergyPlus file contains values such as "1.#IO" or "0.0" for values that should not be zero, close the EnergyPlus file, and click on the Calc button for the record.

Nominal Thickness Not Applied To Shade Thickness

In previous versions of the program, if "Use Nominal Glass Thickness" was checked in Preferences, the program would apply that option to Shade Material Thickness, which it should not have done. This has been fixed.

Relative Heat Gain in List View of Glazing System Library

In the Glazing System Library List View, the Relative Heat Gain is always in SI units.

Shading Layers with BSDF / XML References

For glazing systems that reference layers defined as "Shading Layers with BSDF / XML" the program no longer displays the message saying that the results do not contain spectral data after a calculation.

Tilted Products

In the Window Library, when you input a value into the Tilt field, the program does the appropriate thing for calculating the Condensation Resistance value, according to the following rules:

  • For window tilts greater than 90 degrees, CR simulation results are used for sills, headers, and horizontal mullions, U-factor simulation results are used for jambs and vertical Mullions
  • For window tilts less than 20 degrees, U-factor simulation results are used for all cross sections
  • For window tilts > 20 and < 90, CR is not calculated and a warning message appears

VT1 Calculation With Dividers is Incorrect

In the Window Library Detailed View, the VT1 calculated value (accessed from the Detail button next to the VT results) is incorrect if dividers are modeled.