Brazed plate heat exchangers (BPHE) are recognized in the HVAC business as a highly efficient heat exchanger technology. But scaling and fouling on the surface of BPHEs can Significantly reduce performance, in terms of drop in pressure and heat transferance.
Once surface scaling starts to develop, BPHE performance continuously declines until eventually it eventually fails due to clogging.
The losses due to the reduced heat transferred have not been fully monitored but a simple calculation indicates that performance is reduced by 20-30% with through initial scaling. Typically cleaning (CIP= cleaning in place) can recover some of the performance but the downside is that it also reduces the lifetime of the heat exchanger.
Sealix® is a functionalized coating technology which protects the surface of the BPHE from scaling with a hydrophobic surface structure (also known as Lotus effect). As a positive side effect, the metal surface is also protected against corrosion in aggressive water conditions which are typically critical for stainless steel and Cu.
SWEP is one of the world's leading suppliers of compact brazed plate heat exchangers. These products are used where heat needs to be transferred efficiently in air conditioning, refrigeration, heating&cooling and industrial applications. SWEP has approx.1000 employees and annual sales of 3 million units.
SWEP can be found on Stand 227