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| Default IAM Values in PVsyst Are Non-Physical https://forum.pvsyst.com/viewtopic.php?f=12&t=4474 |
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| Author: | kjs55 [ Fri Jun 28, 2019 11:34 pm ] |
| Post subject: | Default IAM Values in PVsyst Are Non-Physical |
PVsyst V6.81 1. Glass refractive index (n) appears to be 1.526, not 1.53 as shown in Hidden Parameters 2. It does not appear n=1.37 for EVA (in Hidden Parameters) is used for "Normal glass" or "AR coating" scenarios 3. With the following assumptions, I get the same results as PVsyst: --No ARC --Glass n=1.526 --No refractive index applied for EVA AOI IAM_PVsyst IAM_kjs55 0 1.000 1.000 30 0.998 0.998 50 0.981 0.981 60 0.948 0.948 70 0.862 0.862 75 0.776 0.776 80 0.636 0.636 85 0.403 0.402 90 0.000 0.000 4. With the following assumptions, I get slightly different results than PVsyst: --ARC n=1.29 --Glass n=1.526 --No refractive index applied for EVA AOI IAM_PVsyst IAM_kjs55 0 1.000 1.000 30 0.999 0.999 50 0.987 0.987 60 0.962 0.961 70 0.892 0.889 75 0.816 0.811 80 0.681 0.674 85 0.440 0.433 90 0.000 0.000 |
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