Customize building program and schedule at BuildingUWG

ladybug-tools
1

Hello @chris and everyone,

I am currently using UWG model for an urban heat island simulation study, and I’ve encountered some issues while setting up the building program and schedule.

From what I understand so far:

  1. In the “Assign Building UWG Properties(BuildingUWG)” component, it is required to select one of the 16 reference building types for building program (for example MidriseApartment, LargeOffice).

  2. The MidriseApartment building program seems to have an HVAC schedule that runs 24 hours per day, with a cooling setpoint of 24.4°C and a heating setpoint of 21.7°C.

However, I would like to customize the schedule, for example, the HVAC operates only from 8 PM to 6 AM, and change the cooling setpoint to 26°C.From previous discussions, it seems that custom schedules may be modified via the JSON, but I’m not entirely sure how to do it.

So, I’d like to ask:

If I customize the building program and schedule in the “BuildingSolid” component, will they be overridden by the program in the “BuildingUWG” component after connecting it ?

Is there any other way to modify the HVAC schedule？

If editing the JSON is the only way, from which part should I modify it? And what should I write in the JSON file?
Thank you very much for your help!

UWG SCREEN
UWG SCREEN1736×316 81.8 KB

model_1017.3dm (31.8 KB)
UWG_1017.gh (85.0 KB)

2

You can create your own program type with this component:
image
You can set the minimum ventilation and the setpoint.
Hopefully that is helpful.
best
-trevor

3

Hello Trevor,
Thank you for your reply !

I have tried to use this component to set the setpoint temperature and schedule, and assigned it to the “Building Solid” component, and then connecting it to the “Building UWG” component.
However, the resulting morphed epw file showed no change.

I suppose this is because once connected to the “Building UWG” component, the simulation will use one of the 16 reference building types for building program, which causes my custom schedule to be ignored.Is my assumption correct?

Are there other options can change the HVAC schedule for the UWG model?