"The plan was to save 35 % of energy, but we have achieved over 70 %."

The renovation project

Since 1994, the halls at the main site in Neuss have been heated with a central hot air system using a gas-powered hot water boiler system, which resulted in high energy costs. In order to achieve the company's own ambitious climate targets and increase efficiency, it was decided in 2021 to convert to a modern, decentralized heating system. In collaboration with the engineering firm Enviconsult, a heat demand analysis was carried out and a concept was developed to switch off the old boilers and introduce modern infrared heating.

Requirements and implementation

ATN has been using decentralized infrared heaters from KÜBLER in one branch since 2017. Due to the different areas of use in the halls, the decision was also made in 2021 for a system that can specifically control individual heating zones. Convenient control and high energy efficiency were also important. After reviewing various offers, KÜBLER was again chosen because its system and the CELESTRA digital control system were convincing.

Technical solution

Due to the low ceiling heights, PRIMA infrared systems were installed in the halls and PRIMA plus. These systems offer high infrared efficiency and a good price-performance ratio. The system is controlled by CELESTRA, which automatically optimizes heating operation in the heating zones. The WinTec extension module enables remote control and TorOff reduces energy losses when the hall doors are open. The EMMA energy management system ensures real-time transparency and provides relevant data for reporting, e.g. in accordance with DIN EN 50001.

Results

Seit der Inbetriebnahme im September 2022 wurden die Erwartungen übertroffen. Geplant wurde konservativ mit 35 Prozent Energieeinsparung, erreicht wurden über 70 Prozent. Der Energieverbrauch sank von 1.996 MWh im Jahr 2021 auf 565 MWh im Jahr 2023, was eine Einsparung von 1.431 MWh pro Jahr bedeutet. Zusätzlich wurden 97 MWh Strom und 344 Tonnen CO₂ eingespart. Lutz Obladen, Leiter Facility-Management bei ATN: „Die Umstellung auf die dezentrale Infrarotheizungstechnik ist für das Erreichen unserer Klimaziele ein Meilenstein!“

Experience and conclusion

The old heating system caused high costs and environmental pollution. The new infrared heating system from KÜBLER enables targeted control of the heating areas and significantly reduces energy consumption. The cooperation with KÜBLER was successful, the installation went smoothly and during operation. The employees are satisfied and the system works perfectly. Obladen emphasizes: "The bottom line is that I would do everything exactly the same again."