Hey!
I have a question regarding energyPlus calculation methods: I want to simulate a building with a low-temp radiant element in a concrete core slab (m_flow and temperature are given by measured data). Since I get wrong results (the surface temperature is to high compared to measured data and results from other simulation programs) , I want to argue the reasons for these differences. I got some hints from a colleague but I want to ask you a) if that hints are plausible and b) if you probably know additional reasons:
1)EnergyPlus calculates the sub-models “low-temp-rad element”, “wall” and “zone” separately and successive + that is a problem when it comes to low-temp-read systems: Does that mean that there is now data exchange/feedback during the simulation?
2) The CTF method in combination with a massive concrete slab + low-temp radiant element could cause deviations since the CTF method is not suitable for walls with high capacities?
3) EnergyPlus may or may not achieve the given low-temp-radiant inputs (m_flow, temperature, etc.)
Thank you very much for your help!
