4
ITEM
A-03-343
DATED
NOVEMBER 2012
SUPERCEDES
MARCH 2011
Usually single-pass plate heat exchangers are used (shown
below). In the case of single-pass plate heat exchangers, all feed
and return pipes are connected to the fixed pressure plate.
Close temperature differences between the media may demand
the use of multipass plate heat exchangers. In the case of multi-
pass plate heat exchangers, the connection pipes are placed at
the fixed frame plate and at the pressure plate.
INTENDED PURPOSE:
This heat exchanger has been specially designed and
manufactured for your specified operating conditions
concerning pressure, temperature, flow rates, and type of
flow media. If a change in the specified operating conditions
becomes necessary, Aurora should be consulted. The heat
exchanger should be operated only under new operating
conditions after appropriate changes have been made.
Intended use includes:
1. Adhering to the valid laws, decrees, regulations, directives
and other rules for the installation site.
2. Following all safety instructions of these operating
instructions.
3. Adhering to a regular inspection and maintenance plan.
NOTE: Aurora accepts no liability for damage caused by
deviations from the specified operating conditions for the plate
heat exchanger.
OVERVIEW AND DESCRIPTION:
BASIC ANATOMY. The following figure represents the basic
structure of a plate heat exchanger. The actual design depends
on the application.
Number
Component
1
Upper (or Carry) Beam
2
Piping Connections
3
Fixed Pressure Plate
4
Support Leg
5
Loose Pressure Plate
6
Heat Transfer Plates
7
Lower (or Guide) Beam
8
Gaskets
9
Tie Rod Assembly
The plate pack consists of contoured
heat exchanger plates (1) and the
corresponding gaskets (2) of varying
number and arrangement. Refer to the
flow diagram for specific instructions
as to the arrangement of the plates and
gaskets in the plate pack.
IDENTIFICATION. Each Aurora
gasketed plate heat exchanger is
provided with a nameplate that
complies with ASME Section VIII
requirements. It is fastened to the
outside of the fixed pressure plate of
the heat exchanger.
Here you’ll find information on:
1. Heat exchanger model
2. Serial no.
3. Max. Allowed Working Pressure
(psig/bar g)
4. Permissible temperatures
(°F and °C)
5. Date of manufacture
6. Compression dimensions
a. “a max.” / “a min.”
b. Listed in both inches and mm
7. Additional details (project specific)
8. U-Stamp (if applicable)
Each plate heat exchanger is supplied
with a dimension sheet and a flow diagram.
The dimension sheet shows the external dimensions as well as
details of the type, size and position of the pipe connections.
The flow diagram shows the plate arrangement and type of plate
heat exchanger, the plate material of the plate heat exchanger,
the plate thickness as well as the gasket material and the part
numbers.
FRAMES:
Aurora plate heat exchangers are available in different
application-specific frame designs. There are two basic designs,
BY and CY. The BY design is especially employed for longer
plate packs.
The structural steel frames are protected against corrosion by a
weather-protective multicoat paint. The tie rod assemblies are
made of high-strength alloy steels.
