Sigma400 Series Bulk Solids Cooler
The heat exchanger plates are fully welded, require no gaskets and are available in stainless steel and other corrosion-resistant alloys to suit the process conditions. To make the plates, two panels are laser or resistance welded together in a preset pattern of spot welds. Perimeter and pass seam welds are completed, followed by installation of the welded inlet and outlet tube connections. Weld discoloration is removed by pickling.
The welded plates are hydraulically inflated under controlled conditions to provide uniform corrugations, or dimples. These dimples create turbulent flow inside the plate resulting in efficient heat transfer. The heat exchanger plates have a low profile with smooth and uniform heat transfer surfaces exceptionally resistant to fouling.