Help Needed: Low-Temperature Radiant System in Ironbug Shows No Significant Impact on Energy Use

Hello everyone,

I’m currently working on energy simulation for a low-temperature radiant panel system. However, I encountered a puzzling issue:

Whether I enable or disable the radiant system, the overall energy use intensity (EUI) changes very little. The HVAC components report no errors and the simulation runs successfully, producing energy data — but it seems like the radiant system is not actually affecting the results as expected. I tried to change the CoolingControlTemperatureSchedule, but the result remain the same.

As a beginner to Ironbug, I suspect there might be issues with the component connections or parameter settings in my GH definition that prevent the system from functioning properly.

I cannot upload my GH file, because I am a new user. But if necessary, I could send it by email. I would greatly appreciate if anyone could review my component connections and parameter setups, and provide any insights or suggestions on what might be going wrong.

Thank you so much for your time and support. Your help means a lot for advancing my research.