Customer requirements set standards for the development and production of Graepel perforated metal sheets.The challenge was to develop a perfect ventilation grille that would comply with the customer's requirements. Graepel developed a ventilation grille that meets and exceeds the highest standard. The grille has a proven exceptional airflow while demonstrating reduced weight and high rigidity. Graepel Persity is the product that fulfills all requirements and offers a superior design.
Graepel Persity offers customers 5 times the added value due to the highest engineering precision and a perfect die-cutting process.
The Graepel Persity advantage:
The Graepel Persity geometry reduces the pressure drop to a point that is much less than comparable perforated metal sheets which are not formed.
Results from pressure loss measurement in March 2019, conducted at the Dresden University of Technology.
Opposite side: Air resistance (pressure loss) due to deformation at an airflow of 10 m/s has been proven not to cause pressure losses
Cost saving/weight reduction