Blind control settings

The blind control settings will affect the Constructions with Blinds which have been applied in the building.

During daytime control / Outside daytime control

Vabi Elements looks for a common divisor in the time schedules of all rooms in the building based on the input given here. The operation period of the building is determined in this way. Only ‘during daytime control’ is requested in for cooling load calculations, whereas both controls are requested for building simulations.

If automatic / manual control

 CL BS
These are the two settings determined in Control of blinds.

•      Always open. The blinds will not close, i.e. become activated, in any circumstance. The corresponding switching level is 1200 W / m²;

•      Always closed. The blinds will not open, i.e. become deactivated, in any circumstance. The corresponding switching level is 0 W / m²;

•      Controlled. This option allows you to specify the switching level. The intensity of daylight and the switching level determine when the blinds are closed or opened.

Switching level

[W / m²] Standard 250 W / m² for automatic control and 300 W / m² for manual control CL BS
This input field only appears if the control was set at Controlled. If the daylight intensity is below this specified switching level, the blinds remain open. If the daylight intensity is above this switching level the blinds are closed to block the sunlight. In reality it turns out that manually controlled blinds are closed less often, the default switching level is higher in this case.