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16.04.2021 | Ceramics | News | Onlineartikel

Containment Shells Made of High-Performance Ceramics

Leyla Buchholz
1 Min. Lesedauer

Containment shells are already firmly established in the pump industry. Due to the ceramic material FZM, they avoid wear, eddy current losses and excessive energy input.

Magnetic couplings are increasingly being selected for sealing systems as leakage-free solutions in pump construction. The containment shell is a crucial element in this regard, and the fine ceramics manufacturer Kyocera specializes in producing it. It is the material in particular that makes the products stand out: FZM heavy-duty ceramics do not contain any metallic components. This helps to avoid eddy currents that cause power losses, and the drive power can be reduced by up to 15 %. In comparison, eddy currents in metallic containment shells can generate up to 50 kW of heat. Additional heat inducted in metallic containment shells is dangerous when pumping liquid gases or liquids close to their boiling point. The corrosion-resistant property is another advantage of the ceramic containment shell together with its excellent mechanical strength. Therefore, an almost universal use is possible – even in the chemical industry. The containment shells offer another important advantage: energy-efficiency. This is particularly noticeable when using large pumps, where the energy savings accumulate. Improving the energy efficiency of pumps and pumping systems is hugely important, because pumps account for about 20 % of the energy consumption of motor-driven systems. According to a projection made by the German Energy Agencies (dena), this would amount to 10 billion kWh saved per year - just by optimizing pumping systems.

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