Geco solar radiation issue

Replies to This Discussion

Permalink Reply by Jesus Galvez on November 11, 2013 at 12:11pm

Hello owe,

is this what you want?

Attachments:

• gecoradiation.gh, 21 KB

Permalink Reply by Jesus Galvez on November 11, 2013 at 12:13pm

Sorry, you'll have to input the weather data. Use ecotect to convert .epw to .wea

Attachments:

• Alicante.wea, 138 KB

Permalink Reply by owe on November 12, 2013 at 11:43am

Hi thanks! Well, what I need indeed is to get total solar radiation values as an output to then pulg it in as an input for another calculations I have to complete within Grasshopper. Using the EcoSunRays component you get Difuss solar (w) as an output, I need to get the total radiation as an output.

If I am not wrong, these values are the ones shown in the last ObjectRequest component in your code (Val(Wh/m2)) JPG attached.

By the way, I realize the name of the weather file is Alicante. Just in case, if you are Spanish let me know because I am Spanish and we may communicate better in our language ;)

Permalink Reply by owe on November 12, 2013 at 11:44am

Sorry you can find the JPG here

Attachments:

• weather data.jpg, 269 KB

Permalink Reply by owe on November 12, 2013 at 11:49am

One more thing, how can you consider obstruction geometry to calculate solar radiation on other pieces of geometry?

Permalink Reply by Jesus Galvez on November 12, 2013 at 12:25pm

Yes that would be it. The component at the bottom would also work, but I don't know why it didn't have the interval [I] values
connected. Just add the output [I] from [EcoMeshExport] to the input [I] from [EcoObjectRequest]. Those are values from each of the subdivisions of the mesh, so to get the total you'll have to use the [Mass Addition] component. 

The definition I gave you calculates the total radiation striking a surface during a time interval (with the [EcoSolCal] component). If you want to know the total radiation regardless of any surface I suggest you try Ladybug. 

I have not done any calculations with obstructing geometry. 

Feel free to contact me in Spanish. 

Permalink Reply by owe on November 15, 2013 at 4:35am

Hi Jesus! 

I have another issue. The "exposure" component in Geco calcutes the combined exposure for evry individual mesh that you introduce as an input "S". It also has another optional input, which referrs to obstructing geometry "O". Do you know if this component calculates the shadow that every single mesh introduced as an "S" input project on every other mesh just implementing these meshes as "S" inputs, or do you have to connect them also to the "O" input for the software to consider them as obstructing geometry?

Lets say the meshes you introduce as "S" inputs are terrazes that belong to a building because you want to know their solar exposure. Obviously a number of terrazes are going to project shadow on some other terrazes. I want to know if the component already considers that when you plug the meshes (terrazes) to the "S" input, or if you also have to plug them to the "O" input.

Thanks!!

Permalink Reply by to] on November 15, 2013 at 5:02am

to get the total radiation you have to multiply the area of the panel with the values as the unit is Wh/m². What do you mean with the total radiation?

Permalink Reply by to] on November 15, 2013 at 6:02am

please post such discussions in the http://www.grasshopper3d.com/group/geco/forum/topics/geco-userproblems