1. Windows Software Tools and Open Source Framework
D. Charlie Curcija,
Steve Selkowitz,
Christian Kohler,
Robin Mitchell,
Simon Vodanovic,
Stephen Czernacki
October 4, 2016

2. Overview Introduction Current state Version 7.5 Open Source
Version 8.0 planning
Conclusions 5

3. LBNL Windows Software Tools

4. Workflow For Credible Product Characterization
Window Characterization Facilities
Product Design
Ratings / Deployment
Tools, Standards, Product Data

5. Recent Advancements Perforated screens Vacuum glazing
Chromogenic glazing
Vertical Louvers
Angular data
Glazing deflection
Cellular shades
Radiance renderings

6. Current Version – 7.4 Arbitrary shade geometry capability
Use THERM as drawing tool
Use Radiance genBSDF engine for optical calculations
Extension of cellular shade models to highly insulated, multi- walled products
Development of optical and thermal model for pleated shades
Support for NFRC efforts to rate and certify integrated shades 5

7. Upcoming Version – 7.5 Improved arbitrary shade geometry capability
More user-friendly THERM interface
Improved cellular shade models
Automated effective openness area
Updated algorithms for heat transfer due to air flow around and through shading device
CGDB version 8
Continue to support NFRC efforts to rate and certify integrated shades 5

8. Test Validation of New Models – Venetian Blinds
15 total horizontal blind samples from two manufacturers
176 total combinations of seven parameters measured

9. Measured vs Simulated Performance – Venetian Blinds

10. Measured vs Simulated Performance – Perimeter Gaps

11. Measured vs Simulated Performance – Perforated surfaces

12. Automation of Effective Openness Fraction in WINDOW 7.5
Task 1 -- WINDOW Effective Openness Fraction is now calculated for some shading systems (rather than user input)
Venetian Blinds (vertical / horizontal slats)
Perforated Screens
Woven Shades

13. Updated Algorithms – Air Flow Around/Through Shades
Updated algorithms for calculating the heat transfer in the gap between a window and an attachment and on the room side of the attachment.
dleft
dright
dtop
dbot
dgap
Inside mount
Outside mount
Updated algorithms for edge gap air flow
New algorithm for calculating Effective Openness Fraction and associated air flow

14. CGDB Accurate database of scattering material properties
Equivalent to IGDB for scattering materials (complex glazing, shading devices)
CGDB 7 Released. CGDB 8 to be released October, Currently 450 products in CGDB (double the size from version 5)
New, cloud based IGDB/CGDB being designed and will be available in time for WINDOW/THERM 8. Effort coordinated internationally.
Concept of Regional Glazing and Shading Data Aggregator Centers (RDA) developed and sent for comments.
NFRC is business partner for North American glazing and integral shading RDA. LBNL is technical partner
AERC is business partner for North American window attachment RDA. LBNL is technical partner
Future development of RDA will involve more substantial involvement of international partners and their buy-in into harmonized product database. Phase 2 to be implemented in FY17.

15. Open Source
Open source plan for windows software tools developed. Will be available on LBNL windows web site
RDA framework developed. Will be posted on LBNL windows web site
WINDOW calculation engine WinCalc is first OS product. Posted on GiHub
Shared calculation engine between E+ and WINDOW
Other parts of WINDOW next in line
THERM simulation engine in FY18
COMFEN/RESFEN is also planned for OS, pending availability of funding
Cloud based IGDB/CGDB (IGSDB) will be limited OS
RDA will have read/write access
General public will have read only access

16. Shared WINDOW Calculation Engine - WinCalc

17. WinCalc on GitHub
Delivered WINDOW calculation engine C++ code to public Github repository

18. WINDOW/THERM 8 Planning
Restructured database to effectively communicate with IGSDB
Separation of protected db and user db
Automated sync of protected db with IGSDB
Single database structure for both specular and scattering products
Separate libraries of glazing and shading products
Fully open source, except for proprietary modules that will be provided as objects to allow third party compilation
Exploration of the use of Electron.io development platform
Allows software to run as both desktop and web browser application
Inherent multi-platform compatibility (just like web browsers)
Exploration of the redesign of GUI

19. CONCLUSIONS Questions? Thank You
New software releases include some major new and updated functionalities
Open source approach will increase usability and accessibility to windows software tools
New, cloud based IGSDB database of glazing and shading products will greatly enhance access to glazing nd shading products
RDA will decentralize and better harmonize international sets of data and will reduce current LBNL and DOE burden
LBNL continues to validate and improve algorithms for shading products
LBNL plans to maintain version 7 with further releases (7.5.x, 7.6, …) until version 8 comes out and is thoroughly tested
LBNL does not plan on supporting version 6.3 beyond this year
Questions?
Thank You