Hello,
I am trying to calculate the loss of energy when a solar panel has not the optimum inclination (22°). I calculated the incident radiation in three different ways:
1-first, I ran an interzonal adjacencies calculation and then checked the "use the existing shading masks" box.
The total radiation was 495 kWh/m², including 5 kWh/m² of diffuse radiation.
2- Then, I calculated the radiation directly by checking the "perform detailed shading calculations" box.
The total radiation was 1050 kWh/m², including 568 kWh/m² of diffuse radiation, 100 times more!!
3- Then, I calculated the shading masks with the sunpath calculation tool. After that, I calculated the incident radiation checking the "use the existing shading masks" box again.
The total radiation was 483 kWh/m², including -1,6kWh/m² of diffuse radiation!!
What is wrong here? Is this a bug or am I making a mistake?
I am including my model so you can check it.
Thank you for your help, I am pretty desperate here...
Alice
| Attachment | Size |
|---|---|
| panels.eco | 115.7 KB |
Isn't there anybody who
Isn't there anybody who knows the answer? Sometimes I get wrong results like the one above (negative diffuse irradiation, too. But it's not always that easy to distinguish between obviously wrong and apparently correct results. After all you don't want to check each model object by object.
Any help from square1 report or somebody else?
bug
This is clearly a bug.
To get around it, I always check the "perform detailed shading calculations" box, as it is the only way to have a realistic diffuse radiation.