Ironbug rooms not recognized

grasshopper ironbug
1

Hi to all,

I am trying to run a straightforward definition for a high-temperature radiant system running with water from an ASHP. I have been trying to create this system without success, every time I get this error and I cannot find my mistake.

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Do you know where the origin of my error could be?

Thanks

Test radiant heater.gh (126.5 KB)

2

Hi @MingboPeng,
Could you please point out where is my mistake?
Thanks

3

Hi @Julioamodia89
Here is the issue: when you set the ThermalZone’s name to “test”, it overrides the original name from the input Honeybee room, which causes HB_Detailed_HVAC component failed to link ThermalZone to the input Honeybee room.

Removing the name setting will fix the issue:

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image3608Ă—1146 402 KB

2 Likes
4

I see. Thank you very much!

5

Hi @MingboPeng,
I disconnected the room name, but I only have lighting and electric equipment consumption, I have realized that the equipment inputs differ from those defined in EnergyPlus.

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If I have not misunderstood this radiant system doesn’t require a radiant surface construction to be assigned but rather some fractions of radiant energy incident. However, I am not able to find these fractions in the Ironbug component, could you please verify this? is there any workaround? can be assumed that what is not incident on people is evenly distributed among the surfaces?

Thanks again!

7

Hi @Julioamodia89,
Are you looking for these? These input names come from the OpenStudioSDK

.

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image3283Ă—1310 484 KB

8

Hi @MingboPeng,

Thank you for your response. I refer to the fractions of surfaces exposed to the radiant surface (Fraction of radiant energy that is incident on the surface indicated). I believe this must be an automatic calculation made by E+ based on the geometry and the selection of the radiant source surfaces. But to be honest I don’t know how to verify this. Any clue?

Thanks

9

It is limited by OpenStudio SDK. If you look at the link I shared above, there is no method that allows users to set up the geometry related fractions.

Do you have to use this HighTemperatureRadiant object?
If I remember correctly, you can specify Room’s surface with a radiant construction for a LowTemperatureRadiant system. It should also be included as an example file in Ironbug, or you can find it from the forum.

10

Hi,

Yes, this solution is proposed for a large warehouse with very tall ceilings, they must be at very high temperatures. However, I will have a look to the low-temperature sample files.

Thanks again and congratulations for such an amazing tool