"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
Since commissioning in September 2022, expectations have been exceeded. The conservative target was 35 percent energy savings, but over 70 percent was achieved. Energy consumption fell from 1,996 MWh in 2021 to 565 MWh in 2023, representing a saving of 1,431 MWh per year. In addition, 97 MWh of electricity and 344 tons of CO₂ were saved. Lutz Obladen, Head of Facility Management at ATN: „The switch to decentralized infrared heating technology is a milestone in achieving our climate goals!“
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."
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The old hall heating system consumes too much energy. And it is becoming increasingly unreliable. Good reasons to finally tackle heating modernization and replace the old system with a modern, energy-efficient one. But the expense seems high and is often shied away from. Yet today there are alternative solutions that can also be very interesting from an economic point of view.
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How to save 3.7 million kWh - almost 70 percent! - energy can be saved? This is demonstrated by the joint project of hall heating specialist KÜBLER and Höganäs Germany GmbH (formerly H.C. Starck) at the Laufenburg site near the Swiss border. For dena, this is a flagship project that the German Energy Agency is publishing on its new website as an example of good practice.
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Ludwigshafen, January 2024: The food bank in Bayreuther Straße is delighted to receive a donation cheque from the employees of KÜBLER, the specialist for energy-saving hall heating systems. They not only wanted to use the Christmas party to bring the old year to a cheerful close together with the entire workforce, but also to think about people who need support. To this end, they organized a raffle with over 100 prizes, including an iPhone as the main prize, which was provided by the company. This raised almost 500 euros. The food bank is delighted.
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Heating halls efficiently, economically and functionally is a challenge. Because in these huge buildings with ceiling heights that often reach 20 meters, a lot of energy can quickly be consumed - energy that is expensive and, depending on the heating technology used, also causes high emissions. The building stock is often still equipped with inefficient and [...]