After importing a WINDOW 7.5 file into eQuest 7175 (using DOE 2.3) and running a simulation - I see the U-value and SC is totally incorrect from what it should be based on the built up window system in WINDOW.
- I have this glazing system from LBNL WINDOW 7.5: center-of-glass U-value as 0.285 and SC at 0.315
- I've exported it to a DOE-2 report under the window system in WINDOW:
`
WINDOW v7.5.15.0 DOE-2 Data File : Multi Band Calculation
Unit System : SI
Name : DOE-2 WINDOW LIB
Desc : SB70XL
Window ID : 1
Tilt : 90.0
Glazings : 2
Frame : 1 Al w/break 5.680
Spacer : 1 Class1 2.330 -0.010 0.138
Total Height: 1500.0 mm
Total Width : 1200.0 mm
Glass Height: 1385.7 mm
Glass Width : 1085.7 mm
Mullion : None
Gap Thick Cond dCond Vis dVis Dens dDens Pr dPr
1 Air 12.7 0.02407 7.760 1.722 4.940 1.292 -0.0046 0.720 -0.0002
2 0 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0 0
Angle 0 10 20 30 40 50 60 70 80 90 Hemis
Tsol 0.336 0.337 0.332 0.326 0.317 0.299 0.261 0.189 0.087 0.000 0.278
Abs1 0.351 0.354 0.361 0.365 0.364 0.365 0.372 0.370 0.295 0.001 0.358
Abs2 0.032 0.032 0.032 0.033 0.033 0.034 0.033 0.029 0.021 0.000 0.031
Abs3 0 0 0 0 0 0 0 0 0 0 0
Abs4 0 0 0 0 0 0 0 0 0 0 0
Abs5 0 0 0 0 0 0 0 0 0 0 0
Abs6 0 0 0 0 0 0 0 0 0 0 0
Rfsol 0.282 0.276 0.274 0.277 0.286 0.302 0.334 0.412 0.598 0.999 0.322
Rbsol 0.300 0.296 0.293 0.291 0.293 0.304 0.334 0.417 0.598 1.000 0.330
Tvis 0.704 0.708 0.698 0.686 0.668 0.632 0.552 0.401 0.186 0.000 0.587
Rfvis 0.109 0.102 0.099 0.101 0.114 0.138 0.185 0.290 0.523 0.999 0.167
Rbvis 0.121 0.114 0.113 0.117 0.132 0.161 0.226 0.371 0.640 1.000 0.201
SHGC 0.390 0.393 0.388 0.382 0.374 0.356 0.318 0.243 0.128 0.000 0.333
SC: 0.42
Layer ID# 5284 5012 0 0 0 0
Tir 0.000 0.000 0 0 0 0
Emis F 0.840 0.840 0 0 0 0
Emis B 0.035 0.840 0 0 0 0
Thickness(mm) 5.7 5.7 0 0 0 0
Cond(W/m2-K )176.5 176.5 0 0 0 0
Spectral File SB60 Clear_6 CLEAR_6.PPG None None None None
Overall and Center of Glass Ig U-values (W/m2-K)
Outdoor Temperature -17.8 C 15.6 C 26.7 C 37.8 C
Solar WdSpd hcout hrout hin
(W/m2) (m/s) (W/m2-K)
0 0.00 4.00 3.31 6.86 1.36 1.36 1.35 1.35 1.38 1.38 1.44 1.44
0 6.71 30.84 3.21 6.92 1.65 1.65 1.53 1.53 1.56 1.56 1.63 1.63
783 0.00 4.00 3.91 6.53 1.36 1.36 1.35 1.35 1.38 1.38 1.44 1.44
783 6.71 30.84 3.36 6.64 1.65 1.65 1.53 1.53 1.56 1.56 1.63 1.63`
- I've then imported it into eQuest, and run a simulation. The resulting SIM file shows the COG U-value at 0.536 and SC at 0.57, which is way off from what it should be.
Any ideas why it is so off?
