WINDOW7 / THERM7 - cdn.ymaws.com · WINDOW/THERM History • WINDOW4.1 MS-DOS based • WINDOW5...
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WINDOW7 / THERM7 Christian Kohler, Robin Mitchell, Charlie Curcija, Ling Zhu, Simon Vidanovic, Stephen Czarnecki, Charlie Huizenga, Dariush Arasteh Lawrence Berkeley National Laboratory March 2014
Transcript of WINDOW7 / THERM7 - cdn.ymaws.com · WINDOW/THERM History • WINDOW4.1 MS-DOS based • WINDOW5...
WINDOW7 / THERM7
Christian Kohler, Robin Mitchell, Charlie Curcija,
Ling Zhu, Simon Vidanovic, Stephen Czarnecki,
Charlie Huizenga, Dariush Arasteh
Lawrence Berkeley National Laboratory
March 2014
WINDOW/THERM History
• WINDOW4.1 MS-DOS based
• WINDOW5 first MS Windows version, ISO 15099, Optics5
algorithms
• THERM2 released for frames.
• WINDOW6 first version with shading and complex glazing.
• Radically different thermal and optical models
• New Models: – Venetian Blinds
– Woven Shades
– Fritted Glass
– BSDF’s
– EN 673 models
– Multiple shading thermal models (ISO 15099, Waterloo, Scalar)
Which versions of WINDOW have you used?
WINDOW history
• WINDOW 3.1 1988
• WINDOW 4.0 1992
• WINDOW 4.1 1994
• WINDOW 5 2001
• WINDOW 5.2 2003
• WINDOW 6 2005
• WINDOW 6.1 2007
• WINDOW 6.2 2008
• WINDOW 6.3 2011
• WINDOW 7.0 2011
• WINDOW 7.1 2012
• WINDOW 7.2 2013
WINDOW7
• Technical changes – Newer compiler
– More stable thermal solution from EnergyPlus
• New models – Cellular shades
– Perforated screens
– Vertical louvered blinds
– Deflection
– Vacuum glazing
– Chromogenics
• Better IGDB Updater
THERM7
• Minor changes, mostly to stay compatible
with WINDOW
• Added surface potential condensation
IGDB Updater improvements
DEMO
DEFLECTION
VACUUM
Cellular Shades
Chromogenics
RESULTS VERIFICATION – GLAZING
SYSTEMS
Max difference:
U-factor 0.02%
SHGC: 0.08%
RESULTS VERIFICATION - WHOLE
WINDOWS
Max difference:
U-factor 0.08% 0.00147
SHGC: 0.00%
Published in release notes:
http://windows.lbl.gov/software/window/7/7.2.34/w7_releasenotes.htm
SPEED IMPROVEMENTS
0
0.05
0.1
0.15
0.2
0.25
0.3
- 100 200 300 400 500 600 700 800 900 1,000
Ho
urs
Number of windows
Whole Windows with THERM Files
W6.3
W7.2
0
0.5
1
1.5
2
2.5
- 1,000 2,000 3,000 4,000 5,000 6,000 7,000
Ho
urs
Number of windows
Whole Windows with THERM Files
W6.3
W7.2
WINDOW7 SPEED-UP
SUMMARY
• Current changes for NFRC:
– Faster
– Chromogenics display and database structure.
• WINDOW7 new models can be later adopted by
NFRC
• Results are very close
• Available from: http://windows.lbl.gov/software/window/7
THANK YOU
Contact info
Christian Kohler
Windows and Envelope Materials Group
Lawrence Berkeley National Laboratory
Windows.lbl.gov
510-486-5040
Download all Software from http://windows.lbl.gov/software
