Electrical Accessories

Building Automation for Roller Blinds Helps Save Energy

Numerous tests, simulations, and studies confirm the exceptional heat and thermal protection of foil roller blinds. Thanks to their highly reflective exterior-facing foil coverings, the total energy input through glazing can be reduced to as little as 10%. In winter, roller blinds improve window insulation and reduce heat loss. Even with optimal glare protection, the transparent coverings allow daylight into the room, reducing the need for artificial lighting. Overall, compared to a window without sun protection, energy savings of up to 37% per year can be achieved.

These energy-saving effects are clearly demonstrated by the Energy Label from ift Rosenheim. The Institute for Window Technology uses a traffic light color scheme, similar to the one proven for electrical appliances. It separately considers the opposing energy needs: cooling energy demand (summer heat protection) and heating energy demand (winter thermal insulation). Comparing the Energy Labels for windows with and without sun protection highlights the improvement in energy efficiency classes for cooling and heating energy, providing an excellent decision-making aid.

To fully maximize these energy-saving effects, proper operation based on weather conditions and the season is essential. In summer, roller blinds should be closed with the first rays of sunlight and opened at night to protect rooms from excessive heat. In winter, as long as glare is not an issue, open blinds allow solar energy to warm the space during the day. At night, closed blinds help prevent heat loss through windows.

Following these recommendations consistently requires attention and discipline. Automated building control systems offer convenient solutions. The electrically operated roller blinds from MULTIFILM^® can be integrated into all standard building control systems such as KNX, LON, or Smart Home systems. Operation and monitoring can be easily managed via PC with a simple mouse click or through an app on a tablet or smartphone.

To optimize the opening and closing of blinds for maximum energy efficiency, sun sensors can be integrated into the building automation system, or usage algorithms can be programmed based on seasonal patterns. Wind sensors are not required since the foil roller blinds are installed indoors, providing reliable sun and glare protection regardless of weather conditions. Additional advantages of indoor-mounted foil roller blinds include lower purchase costs, maintenance-free operation, easy retrofitting, and unrestricted facade design.