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Technical data
Operation limits
5.5
Operation limits
The heat pumps from the GEA RedGenium series can be operated within the
specified operation limits according to the respective specifications under diverse
work conditions. The operation limits listed below are based on the operational
principle of the reciprocating compressor, thermodynamic relationships, the ves-
sels and safety devices in use, and the practical operating conditions.
Permissible minimum and maximum values for heat pumps of the GEA RedGenium series
Parameter
Speed
Design pressure - high pressure side
Design pressure - low pressure side
Suction pressure
Discharge pressure
3
Pressure ratio p / p
suc
Pressure difference p - p
suc
Outlet temperature of water as secondary
refrigerant
Heating agent outlet temperature in the
4
heat pump
Oil temperature
Discharge temperature at compressor out-
let
Ambient temperature
Ambient humidity
Notes
1.
2.
3
4
62
n
PS
p
p
suc
p
π
3
Δp
t
K2
t
W2
t
oil
t
dis
t
U
ƒ
When considering a specific application, all the conditions specified in the
table must be taken into account and adhered to.
If the specified limits are exceeded for a specific application, GEA Refrigera-
tion Germany GmbH must be consulted.
The given pressure ratio and pressure difference ensure reliable compressor operation. Furthermore,
allowance must be made for the pressure difference necessary for the control valves fitted in the refriger-
ating plant. Generalised maximum values for pressure ratio and difference cannot be specified due to
their dependence on different parameters. Depending on the suction pressure level, the maximum possi-
ble discharge pressure may be below the value specified. The respective compressor usage diagrams
apply. To comply with the minimum pressure difference, we recommend customer to provide a water-side
3-way valve.
Depending on the secondary refrigerant temperature level and the corresponding suction pressure, the
maximum possible outlet temperatures of the heat carrier may be below the value specified due to the
maximum pressure ratios and the pressure differences. The respective temperature operation limit dia-
grams of the compressor apply. Higher outlet temperatures on request.
min
rpm
max
bar (a)
max
bar (a)
max
min
bar g.
max
bar (a)
max
min
-
max
max
bar
min
°C
max
min
°C
max
min
°C
max
min
°C
max
min
°C
max
%
max
GEA RedGenium value ...
... 500... 1100
... 800
500
1500
39
26
2.0
5.17
13.0
10.0
35
1.5
6.0
25.0
+3.0
+8.0
+35.0
+22.0
+50.0
+70.0
+45
+70
+80
+150
+15
+40
95
L_151511_2
19.12.2019
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