Thermal Transfer Systems AlfaDisc 50 User Manual
All-welded Plate Heat Exchanger
AlfaDisc
Applications
AlfaDisc is suitable for most of the applications, such as
general cooling and heating duties, condensation, evapora
-
tion, 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 gives the range
competitive 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 (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 flow 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 flow.
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 flow 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.
TECHNICAL DATA
Design pressure
CE/PED Vacuum to 100 bars
ASME Vacuum to 47 bars
Design temperature
Carbon steel Shell -29 - 538°C
Stainless steel Shell -160 - 538°C
Standard design pressure (g) / temperature
HS ASME/PED 10 bar / -29 - 300°C
US ASME/PED 25 bar / -29 - 300°C
SS ASME/PED 40 bar / -29 - 300°C.
Maximum heat transfer surface
AlfaDisc 50 22 m
2
(235 sq.ft.)
AlfaDisc 100 66 m
2
(706 sq.ft.)
AlfaDisc 150 162 m
2
(1733 sq.ft.)
STANDARD MATERIALS
Shell Material
Mild steel, Epoxy painted or stainless steel
Cover Material
Mild steel, Epoxy painted or stainless steel
Nozzles
Stainless steel and Titanium
Could be combined with carbon steel flanges
Plate material
316L & Titanium
STANDARD CONNECTIONS
Sizes mm (inch) Plateside Shellside
AlfaDisc50 50 (2”) 50-150 (2”-
6”)
AlfaDisc100 100 (4”) 100-300 (4”-12”)
AlfaDisc150 150 (6”) 150-400 (6”-16”)
Pressure ratings
CE/PED PN16, 25&40
ASME ASME cl. 150, 300 & 600
H D Lmin Lmax
AD50 686(27) 305(12) 483(19) 1219(48)
AD100 1117(44) 559(22) 635(25) 1448(57)
AD150 2032(80) 863(34) 965(38) 1880(74)
PCT00064EN 0708
How to contact Alfa Laval
Up-to-date Alfa Laval contact
details for all countries are
always available on our website
at www.alfalaval.com.
Alfa Laval reserves the right to change specifications without prior notification.
AlfaDisc – Plate pressure (g) / temperature
Measurements mm (inch)
Particulars required for quotation
- Flow rates or heat load
- Temperature program
- Physical properties of liquids in question (if not water)
- Desired working pressure
- Maximum permitted pressure drop
- Available steam pressure
H
D
L
AlfaDisc 50 plates
316L 0,6mm (63bar at 50°C to 47,9bar at 454°C)
316L 0,8mm (76bar at 50°C to 57,8bar at 454°C)
AlfaDisc 100 plates
316L 0,6mm (34bar at 50°C to 25,9bar at 454°C)
316L 0,8mm (53bar at 50°C to 40,3bar at 454°C)
Bar
-160°C -29°C 150°C 300°C 538°C
Temp°C
100
64
40
25
10
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