Problem with energy+ Annual Loads component

grasshopper honeybee
,
1

Hello everyone

I am trying to get a rough estimate of monthly loads with the energy+ component (HB Annual Loads) from honeybee 1.0

Since this works fine with my rooms before resolving adjacency (with the component: HB Solve Adjacency), the problem is not in the EPW file. However when I run it on my model with adjacency solved (you can see it in the screenshot) it suddenly returns 0 for all months for all outputs.

Since it works with rooms whose adjacency haven’t been resolved and therefore the error must come from the adjacency solving, I have no idea how to deal with this…

I would greatly appreciate any tips or ideas on how to solve this

regards
hamhans

PS: In the screenshot the exterior walls are turned off so that you can see the interior, for the simulation, they are included.
PSII: The component is orange because of this error: “1. No .ddy file was found next to the _epw_file.
Design days were generated from the input _epw_file but this
is not as accurate as design days from DDYs distributed with the EPW.” which also occurs when the component works fine, so this is not the problem.

problem1
problem12519×1154 200 KB

2

@hamhans ,

I am not able to recreate the issue on my end. For example, here’s a model with adjacencies that is running fine for me:

image
image1837×828 108 KB

annual_loads_with_adj.gh (92.0 KB)

Do you want to upload a sample file that helps me recreate the issue on my end?

1 Like
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hi crhis, thanks for your quick response

I can’t upload files since i’m a new user, but under this wetransfer link:
wetransfer link

you can find a gh file where you should be able to reproduce the error

Thanks for your help, it’s greatly appreciated

hamhans

4

Excellent bug finding and thank you for reporting, @hamhans . I was forgetting to pass the Rhino model tolerance to the Honeybee model that’s created under the hood and this resulted in mis-matching numbers of vertices between adjacent faces.

I just pushed a fix into the official code base:

And here’s your corrected file:
rooms_adjacency_problem_CWM.gh (109.7 KB)

FYI, I also improved the component such that you will see the real EnergyPlus error next time that something in the simulation fails.

2 Likes
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Hi Chris

Thank you very much for fixing this so fast. It works perfectly now.

regards
hamhans