best wood SCHNEIDER
Air conditioning of control rooms for best wood SCHNEIDER
Cool control rooms for hot saws
The southern German company best wood SCHNEIDER needed an climate solution for their control rooms in their plant in Eberhardzell. A particular challenge of the project was to bridge the distances between the individual control rooms and to integrate the system into the existing infrastructure. Together with the customer, STULZ developed and implemented a customized solution.
best wood SCHNEIDER is a medium-sized company operating throughout Europe with a production site in Southern Germany and a branch in Switzerland. With approx. 430 employees, the company manufactures wood products such as glued laminated timber, cross laminated timber and many other products for timber houses and passive houses.
In order to make the production process as efficient as possible and to minimize the risk of breakdowns, best wood SCHNEIDER was looking for an air conditioning solution for their control rooms.
The temperatures in the production halls as well as the outside temperatures created suboptimal conditions, which would have resulted in corrosion in the long term. The associated risks of electrical short circuits, arcs, machine failures etc. had to be eliminated in order to ensure continuous production. In addition, the temperature and humidity levels in the control rooms accelerated the chemical aging process of the control panels. Since the company is certified according to the energy management standard DIN ISO 50001, special attention was also paid to energy-efficient and environmentally friendly air conditioning.
Therefore, the task for STULZ was to equip 4 control rooms with a total cooling capacity of 230 kW and to respond to the very strong sustainability concept of best wood SCHNEIDER by implementing settings like minimum noise emissions, refrigerants with the lowest possible GWP etc.
In order to have a minimal impact on the production process, the entire project had to be implemented within a very short time frame. A particular challenge was the new pipe work of the control rooms, which was up to 150 metres long. The pipes were run through the production halls during operation in order to connect the individual systems.
Another requirement was to integrate the entire new solution into the existing infrastructure. Due to the available space, individual cables were routed along the production lines.
The necessary pump stations for bridging the distances, as well as the dry cooler, were installed outside to save space. With a sound pressure level of 50 dB(A), the requirement for minimum noise emissions was also met here.
CyberAir 3PRO DX was used in the respective control rooms. The units provide maximum cooling capacity on a minimum footprint and offer a high level of energy efficiency through the Indirect Free Cooling mode. This allows the system to use the outside air indirectly (via air-to-air heat exchangers) from a defined temperature to ensure a suitable temperature level at the destination. In addition, the system was filled with the refrigerant 134a, which has a lower GWP value than the commonly used R407C, in order to comply with the sustainability concept.
At the time this article was completed, the system had already been in operation at best wood SCHNEIDER for 1 year. During this period, the temperature and humidity values were significantly minimized and target values were met effortlessly. Both the air conditioning and the control systems benefiting from it running smoothly and without interruption or production downtime. The reliability of the supplied air-conditioning system prompted the customer to equip other areas of the company with STULZ solutions, which are currently in the planning stage.