Update:
I found these posts on how to modify EPW files (How to modify EPW weather file and generate a new one? and Hydra Viewer). I followed the idea of running two consecutive simulations, where the second one uses the results of the first one. However, I get results for space heating between 200 - 7000 kWh/m2 without really changing a lot in the simulation (changes were adjusting internal loads a bit up and down). The funny thing is that if I restart Rhino and Grasshopper the results often reset to a more reasonable level.
But when looking at the surface energy flow then there is not no much lost through the walls and roof:
Also, the energy balance for the boxes looks wrong:
Is that related to me modifying the EPW and “messing it up”? Why is “storage” so big? I don’t have a lot of thermal mass in the construction here.
GreenhouseEnergy.gh (243.8 KB)