AlfaDisc - All-welded Plate Heat Exchanger0 pages

All-welded Plate Heat Exchanger
AlfaDisc
Applications
AlfaDisc is suitable for most of the applications, such as
general 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 fl ow and is cleanable on one side. These features
in combination with an attractive price give us a range of
competitive advantages over other welded concepts.
The AlfaDisc all-welded plate heat exchanger provides the
thermal effi ciency 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 (CE/PED) and 47 bars (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
Liquid fl ow rate
Up to 139 kg/s (2085 gpm), depending on media, permitted
pressure drop and temperature program.
Sizes
AlfaDisc 50
AlfaDisc 100
AlfaDisc 150
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 fl ow.
Number of passes could be up to 4 on each side.
Nozzle sizes up to DN 400 can be accommodated on
the shell side of the exchanger, offering higher steam
and liquid fl ow rates. Nozzles on the plate side can
be up to DN 150.
AlfaDisc 50
Turning plate port
Bypass restriction
diverters
Shell
divider
Flow principle of a multi-pass AlfaDisc.
The AlfaDisc unit can be fabricated from dissimilar
metals when only one side will be exposed to
corrosive conditions.