Data sheet
Gasketed Plate Heat Exchangers (DN 350 / 14”)
SDN352 / SDN354
Description
SONDEX® gasketed plate heat exchangers are
the ideal choice for a wide range of applications
across numerous market segments.
We have the largest plate portfolio in the
world, and we customize each heat exchanger
to meet your exact requirements. Innovative
technologies and smart design make our
gasketed plate heat exchangers a stellar
investment.
Benefits:
• Individually customized solution that
perfectly matches your requirements and
lowers your energy consumption.
• High performance and a low pressure
drop eliminate unnecessary burdens on
your system and optimize overall system
performance.
• The design results in a compact solution with
a small footprint, simple installation, and easy
access for maintenance.
Common applications:
• HVAC industry
• Marine/offshore industry
• Dairy/food/beverage industry
• Sugar industry
• Biogas industry
• Pulp and paper industry
• Heavy industry
• Mining industry
• Petrochemical industry
• Chemical industry
Main data:
• Min. temperature −10 °C
• Max. temperature 180 °C
• Max. working pressure 10/16 bar
• Water and different fluids, steam
• Connection size DN 350 or 14”
Approvals:
• Please contact your local Danfoss/SONDEX®
sales representative for an overview of the
available approvals in your region
Construction standard:
• EN13445 (PED 2014/68/EU)
• ASME sec VIII, Div. 1
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Data sheet SDN352 / SDN354 (DN 350)
Naming of units
SDN352-IS16-21-TKTL89
3)
1)
1)
Type of heat exchanger:
TKTL89 - Plate grouping
21 - Number of plates in the heat exchanger
16 - Design pressure of the heat exchanger
IS - Frame type
2)
352 – Type of heat exchanger
SDN – Gasketed heat exchanger
352 - …
Letter SDN 352 shows type of the attachment of gasket to plate:
e.g. 352 (without A) – SonderLock
352A (with A) – Hang-on
2)
Description of frame types:
There are few different frame types which can be offered for different applications and duties.
IS – with suspension roller,
IG – without suspension roller,
FS – food/sanitary with suspension roller,
FG - food/sanitary,
ST – simple design of frame with threaded connections
3)
Channel grouping:
In this example, the heat exchanger combines TK and TL channels. The share of TL channels equals
89% of the total number of channels.
The number of channels is defined as “the number of plates - 1”.
TK - short thermal length
TM - medium thermal length
TL - long thermal length
Heat exchanger design
Gasketed heat exchangers consist of
Carrying Bar
Plate Pack
Plate
Connections
Head
Flange Connections
Foundation Feet
Column
Follower
Tie Bolt
Guiding Bar
Anatomy of a SONDEX® plate heat exchanger - IS frame.
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Data sheet SDN352 / SDN354 (DN 350)
To the left: A multi-pass solution with connections
Heat exchanger design
(continued)
Multi-pass design
on the follower and the head.
To the right: A single-pass solution with
all connections on the head.
Connections
The heat exchanger may have connections on
both front and back-end sides of the unit.
Connections on the front-end plate are marked
with F and connections on the back-end plate
are marked with B. The numbers 1, 2, 3 and 4
designate the position of the connection on the
end-plate from the top-left port clockwise.
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