.DisHeatLib.Controls.storage_control .DisHeatLib.Controls.storage_controlControl function for storage tank charging de-/activation. Charging starts when the temperature in the top segment T_top falls below the setpoint minus half the bandwith T_top_set - T_top_bandwidth/2. Charging is continued until the temperature at the bottom of the tank reaches its setpoint T_bot_set or until the temperature of the top segement rises above the setpoint plus half the bandwidth T_top_set + T_top_bandwidth/2 (might occur later).