Materials Used In Heat Exchangers - GEA RedGenium Operating Instruction

If brines are used as the heating agent in the condenser, it must also be checked
whether the inhibitors remain thermally stable at the desired temperatures.
Example
Parameter
Heating agent water:
Reciprocating compressor:
Inlet temperature of refrigerant gas in the condenser:
Operating pressure to be maintained on the water side:
5.4

Materials used in heat exchangers

In order to assess corrosion behaviour of the components that are in contact with
the secondary refrigerant or with the heat carrier, the plate material used for the
heat exchanger plates is instrumental (standard plate material is AISI 316). Their
type is designated in the "Technical Specifications" for the respective order.
L_151511_2
19.12.2019
Caution!
Note the water quality
► Since the water quality can vary considerably, we recommend that each
user consult a corrosion protection specialist for his particular case.
Warning!
Prevent the boiling of the heating agent in the condenser!
► The operating pressure of the heating agent must always be above the
respective boiling pressure of the heating agent which corresponds to the
medium temperature. The inlet temperature on the ammonia side of the
condenser and the outlet temperature on the liquid side are significant for
this temperature and pressure.
Technical data
Materials used in heat exchangers
Value
Inlet temperature 50 °C
Outlet temperature 70 °C
T = up to 150 °C
Pressure side
up to 150 °C
500 kPa (1500kPa(a))
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