Long simulation time : Fully glazed room with a large number of glazing

savecancel

Thanks for your answer. I tried FullExterior and MinimalShadowing but the simulation still doesn't stop and remains at the step "Warming up" when I compute the building with interior blinds.

I also already used window multiplier to model windows of this room. It was simplier for me to model the building.

Thanks for your answer, I would try something else before trying to convert my model to the version of EnergyPlus (9.3). It seems that my issue (Simulation remaining blocked during warming up) is due to the regulation on solar radiation of the blinds, indeed when I add blinds on 24h/24 7j/7 instead of blinds controlled by solar radiation the simulation gives me results. Anyone has an idea of how I could create a kind of hysteresis in E+ that would avoid too frequently opening/closing of the blinds ? Maybe it is due to something else ? As I don't have any error report It is difficult to tell.

Part of the slow-down with any shading device is a recalculation of the SciptF approximate view factors for a given zone every time the shading status of even a single window changes. Blinds also require a bit more computation than a shade layer. If you want to tailor the blind control, I would suggest running a simulation of a simple building, report hourly incident solar values, then use a spreadsheet rule to create an hourly blind control schedule that can be imported using Schedule:File.

Thanks, I have tried this solution :

Run a simulation of a simple building, report hourly incident solar values, then use a spreadsheet rule to create an hourly blind control schedule that can be imported using.

But the simulation still remain at the step Warming up without stoping. Can it be due to the radiant floor which is set in autosize ?

I would have expected some improvement (assuming your schedule does not change the blind status very often during the day). That said, radiant systems invoke extra radiant exchange calculations, so this same model with a non-radiant floor should run somewhat faster, but I would expect it to be on the order of only 2x.