Efficiency and excess

Ambient lighting

The direct lighting using downlights creates an average illuminance of 1,900lx on the merchandise. The high luminous efficacy of the LED has a positive effect on the energy consumption, while the good colour rendition and brilliance contribute to making the goods look attractive. The dark spatial impression given by the bright-dark transition on the walls, making the ceiling appear lower, is nevertheless a distraction.

Goods area 1,900lx
Wall 220lx
Main aisle 1,750lx

Efficiency through zoning

By using zoning, the high brightness required for the presentation of goods is prevented from encroaching on the aisles and seating areas where lower illuminances are sufficient. Reducing these zones to 900lx lowers the power requirement on the floor of a department store by about 15%.

Goods area 1,800lx
Wall 200lx
Main aisle 900lx

Efficiency through a differentiated lighting concept

To reduce the overall power consumption on the one hand and to emphasise the uniformity of the goods presentation and scenically present eyecatching features on the other, it is recommended that the ambient lighting is lowered to the benefit of the accent lighting. To give a greater impression of brightness from the overall setting, the proportion of vertical illuminance is increased. Compared with the situation with uniform ambient lighting, this clearly enhances the quality of the merchandise, allowing the connected load to be reduced by about 25%.

Goods area 1,700lx
Wall 290lx
Main aisle 600lx

Lighting control: evening scene

Altering the illuminance in accordance with the time of day can also contribute to reducing the energy requirement. A darker lighting effect in the evening not only creates an appropriate atmosphere, but also saves electricity.