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BSDF shade results significantly changes then comparing versions of E+

Hi All

I have been testing a series of BSDF files created through the LBNL Window. In my investigation, I started looking at how the Heating and Cooling Load changed then I changed the version of E+. In the same study, I also looked at Blinds created through Energyplus functions, which nearly do not differ in Heating and Cooling Load, the changing versions of E+.

The IDF file (Example Attached) is created with an Ideal loads HVAC system with unlimited Heating and Cooling. I have created a Graph representing a series of IDF with different shading systems. This shows that all files with BSDF shades differ greatly in results (Line Plot). However, for the shades created through E+ Functions (BetweenBlinds), the results do not differ.

Furthermore, I have created a Graph showing that the heating load rises significantly after version 8.9.0/9.0.0 (The column plots).

image description image description image description

I have been looking at the version logs; however, I must admit I am not experienced enough to understand why the big changes in results when calculating BSDF shades. So my main question is, can any version updates explain this? Is this only a result of the improved calculation engine in E+, or is it an error in my implementation of the BSDF shade in the IDF file?

Thanks for your help, and please write if you want more files or have an idea.

BSDF shade results significantly changes then comparing versions of E+

Hi All

I have been testing a series of BSDF files created through the LBNL Window. In my investigation, I started looking at how the Heating and Cooling Load changed then I changed the version of E+. In the same study, I also looked at Blinds created through Energyplus functions, which nearly do not differ in Heating and Cooling Load, the changing versions of E+.

The IDF file (Example Attached) is created with an Ideal loads HVAC system with unlimited Heating and Cooling. I have created a Graph representing a series of IDF with different shading systems. This shows that all files with BSDF shades differ greatly in results (Line Plot). However, for the shades created through E+ Functions (BetweenBlinds), the results do not differ.

Furthermore, I have created a Graph showing that the heating load rises significantly after version 8.9.0/9.0.0 (The column plots).

image description image description image description

I have been looking at the version logs; however, I must admit I am not experienced enough to understand why the big changes in results when calculating BSDF shades. So my main question is, can any version updates explain this? Is this only a result of the improved calculation engine in E+, or is it an error in my implementation of the BSDF shade in the IDF file?

Thanks for your help, and please write if you want more files or have an idea.

https://1drv.ms/f/s!AjPYoTdFS-gXhOksvIcvO0Yn-75m2w?e=qoiw2s

BSDF shade results significantly changes then comparing versions of E+

Hi All

I have been testing a series of BSDF files created through the LBNL Window. In my investigation, I started looking at how the Heating and Cooling Load changed then I changed the version of E+. In the same study, I also looked at Blinds created through Energyplus functions, which nearly do not differ in Heating and Cooling Load, the changing versions of E+.

The IDF file (Example Attached) is created with an Ideal loads HVAC system with unlimited Heating and Cooling. I have created a Graph representing a series of IDF with different shading systems. This shows that all files with BSDF shades differ greatly in results (Line Plot). However, for the shades created through E+ Functions (BetweenBlinds), the results do not differ.

Furthermore, I have created a Graph showing that the heating load rises significantly after version 8.9.0/9.0.0 (The column plots).

image description image description image description

I have been looking at the version logs; however, I must admit I am not experienced enough to understand why the big changes in results when calculating BSDF shades. So my main question is, can any version updates explain this? Is this only a result of the improved calculation engine in E+, or is it an error in my implementation of the BSDF shade in the IDF file?

Thanks for your help, and please write if you want more files or have an idea.

https://1drv.ms/f/s!AjPYoTdFS-gXhOksvIcvO0Yn-75m2w?e=qoiw2s

BSDF shade results significantly changes then comparing versions of E+

Hi All

I have been testing a series of BSDF files created through the LBNL Window. In my investigation, I started looking at how the Heating and Cooling Load changed then I changed the version of E+. In the same study, I also looked at Blinds created through Energyplus functions, which nearly do not differ in Heating and Cooling Load, the changing versions of E+.

The IDF file (Example Attached) is created with an Ideal loads HVAC system with unlimited Heating and Cooling. I have created a Graph representing a series of IDF with different shading systems. This shows that all files with BSDF shades differ greatly in results (Line Plot). However, for the shades created through E+ Functions (BetweenBlinds), the results do not differ.

Furthermore, I have created a Graph showing that the heating load rises significantly after version 8.9.0/9.0.0 (The column plots).

image description image description image description

I have been looking at the version logs; however, I must admit I am not experienced enough to understand why the big changes in results when calculating BSDF shades. So my main question is, can any version updates explain this? Is this only a result of the improved calculation engine in E+, or is it an error in my implementation of the BSDF shade in the IDF file?

Thanks for your help, and please write if you want more files or have an idea.

https://1drv.ms/f/s!AjPYoTdFS-gXhOksvIcvO0Yn-75m2w?e=qoiw2s

BSDF shade results significantly changes then comparing versions of E+

Hi All

I have been testing a series of BSDF files created through the LBNL Window. In my investigation, I started looking at how the Heating and Cooling Load changed then I changed the version of E+. In the same study, I also looked at Blinds created through Energyplus functions, which nearly do not differ in Heating and Cooling Load, the changing versions of E+.

The IDF file (Example Attached) is created with an Ideal loads HVAC system with unlimited Heating and Cooling. I have created a Graph representing a series of IDF with different shading systems. This shows that all files with BSDF shades differ greatly in results (Line Plot). However, for the shades created through E+ Functions (BetweenBlinds), the results do not differ.

Furthermore, I have created a Graph showing that the heating load rises significantly after version 8.9.0/9.0.0 (The column plots).

image description image description image description

I have been looking at the version logs; however, I must admit I am not experienced enough to understand why the big changes in results when calculating BSDF shades. So my main question is, can any version updates explain this? Is this only a result of the improved calculation engine in E+, or is it an error in my implementation of the BSDF shade in the IDF file?

Thanks for your help, and please write if you want more files or have an idea.

https://1drv.ms/f/s!AjPYoTdFS-gXhOksvIcvO0Yn-75m2w?e=qoiw2s