This model is to validate the block Buildings.Controls.OBC.Utilities.OptimalStart for space cooling system with a positive simulation start time.
The room is modeled as a simple differential equation with a time constant of
around 5.6 hours. The cooling power is relatively large compared to the heat gain from
the outdoor temperature. The outdoor temperature is repetitive each day;
the optimal start time converges to a small amount of time tOpt
after a few days.