AlfaDisc
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AlfaDisc All-welded Plate Heat Exchanger Applications AlfaDisc is suitable for most of the applications, such as g eneral cooling and heating duties, condensation, evaporation, reboiling and stream heating. Standard design AlfaDisc is built on the Plate & Shell concept. It is able to withstand higher design pressure, is more compact, is better developed for fatigue applications, has the possibility for asymmetric flow and is cleanable on one side. These features in combination with an attractive price give us a range of c ompetitive advantages over other welded concepts. The AlfaDisc all-welded plate heat exchanger provides the thermal efficiency and compactness of a plate and frame unit under conditions that would normally call for a shell and tube unit. Designed for use with liquids, gases and two-phase mixtures at pressure up to 100 bars (PED & ASME) and at temperatures up to 538°C, the Plate&Shell unit works well with aggressive media, such as organic solvents, steam heaters and interchangers that are beyond the capability of a gasketed unit. The unit is also available with removable core design. Typical capacities AlfaDisc 50 Nozzle sizes up to DN 700 can be accommodated on the shell side of the exchanger, offering higher steam and liquid flow rates. Nozzles on the plate side can be up to DN 200. The AlfaDisc unit can be fabricated from dissimilar metals when only one side will be exposed to corrosive conditions. Turning plate port Liquid flow rate Up to 157 kg/s (2355 gpm) depending on media, permitted pressure drop and temperature program. Sizes AlfaDisc 25 AlfaDisc 50 AlfaDisc 80 Bypass restriction diverters AlfaDisc 100 AlfaDisc 150 AlfaDisc 200 Working principle The unit features a plate side and a shell side, which offer high pressure ratings. It has alternating channels for hot and cold media, and can offer true counter-current or co-current flow. Number of passes could be up to 3 passes maximum on each side. Shell divider Flow principle of a multi-pass AlfaDisc.

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TECHNICAL DATA Design pressure CE/PED Vacuum to 100 bars ASME Vacuum to 100 bars Design temperature Carbon steel Shell -45 - 538°C Stainless steel Shell -160 - 538°C Maximum heat transfer surface STANDARD MATERIALS Shell Material Mild steel, Epoxy painted or stainless steel Cover Material Mild steel, Epoxy painted or stainless steel Stainless steel, Titanium and 254 SMO Could be combined with carbon steel flanges Plate material STANDARD CONNECTIONS Model range Plateside Shellside Pressure ratings ASME ASME cl. 150, 300 & 600 and Class 900 1 Dimensions vary with support type 2 Dimensions...

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