CO2 compressors (transcritical)
At a glance
Operating limits and performance data
Technical data
Dimensions and connections
Scope of supply
106
108
118
119
121
CO2 compressors (transcritical) - At a glance
Since the beginning of the 1990‘s, Bock, together with leading institutes and manufacturers, has concerned itself with the
development of compressors for the transcritical CO2 process.
In 1993, the first open CO2 compressor was created for bus airconditioning, which was then presented to the public in a Konvekta
air-conditioning system at the 1994 IAA commercial vehicles fair.
Since then, such compressors have been field-tested and form the
basis of many CO2 studies by international institutes.
In 2002, there was a further stage of development, turning this
compressor into a semi-hermetic version for stationary test applications. The current compressor generation (suction gas- and aircooled) is based on the experiences since this time.
CO2 as a refrigerant
Within refrigeration technology, carbon dioxide (CO2) is known by
the name R744 and has a long history. It is a colourless gas which
liquefies under pressure and has a slightly acidic smell and taste.
Carbon dioxide has no ozone depletion potential (ODP=0) and a negligible direct effect on global warming (GWP=1) when used as a
refrigerant in closed systems. It is not combustible, is chemically
inactive and heavier than air.
Carbon dioxide has a narcotic and asphyxiating effect on humans
only at higher concentrations. As carbon dioxide is less energy efficient than other refrigerants, recently work has particularly concentrated on optimising plant technology for specific applications.
Carbon dioxide is available naturally in large quantities.
Important Information
-- Transcritical CO2 applications are still in the development phase
-- They require a completely new kind of system and control
-- They are not a general solution for the substitution of F-gases
-- We specifically point out that all information in this chapter has
been made based on our current level of knowledge and may
change at any time due to further development.
-- Compressors can only be made available for selected projects
Special Features
-- High-strength spheroidal cast iron housing for high operating
Available models
Displacement
50 Hz (1.450 1/min)
HGX2/70-4 CO2 T
HAX2/70-4 CO2 T
6,2 m3/h
HGX2/90-4 CO2 T
HAX2/90-4 CO2 T
7,7 m3/h
HGX2/110-4 CO2 T
HAX2/110-4 CO2 T
9,7 m3/h
HGX2/130-4 CO2 T
HAX2/130-4 CO2 T
11,5 m3/h
pressures of up to 130 bar on the high pressure side
-- Wear-resistant, long-life mechanism
-- Reliable and safe oil supply through pump lubrication
-- Good operational characteristics through solid total construction
-- Appropriately sized drive motors, available in suction gas-cooled
Type key | Compressors for CO2 (transcritical)
or air-cooled versions, replaceable
-- Suction and discharge connections using compression joints for
steel pipes (without shut-off valves)
-- Decompression valves for the suction and discharge area
-- Electrical connection box to IP54 with Bock MP10 motor protection
HGX2 / 110 - 4 CO2 T
Transcritical
CO2 Version
Number of poles
Swept volume
Size
Ester oil filling
Series 1)
1)
106 I www.bock.de
HG=Hermetic Gas-cooled (suction gas-cooled)
HA= Hermetic Air-cooled (for deep-freezing)
CO2 compressors (transcritical) - At a glance
01
02
03
04
05
06
07
08
09
10
Special features of CO2 transcritical
Based on the high CO2 pressure and the low temperature of the
critical point of 31°C (74 bar), transcritical operating conditions occur at higher temperatures at the heat exchanger. In this case, in
comparison to subcritical applications, the refrigerant CO2 can no
longer be condensed. In this case, the refrigerant gas is heated in
a gas cooler. The temperature and the pressure are dependent on
each other, compared to the subcritical operation.
A special feature in these operating points is the necessary regulation of the high pressure at the so-called optimal high pressure. In
doing this, the greatest possible enthalpy difference at the evaporator and the lowest possible power consumption of the compressor
should be reached. In this way, the maximum coefficient of performance (COP) of the system is achieved. An additional valve with
intelligent control after the high-pressure heat exchanger is needed
for this in the system.
For additional technical data, see Bock software.
11
12
13
tga = 35° C
tga = 40° C
tga = 45° C
tga = 50° C
tga = Gas cooler outlet temperature
Limit conditions: isentrope compression
Evaporation pressure = 40 bar with internal heat exchanger
www.bock.de I 107
CO2 compressors (transcritical) - Operating limits
CO2 Operating limits HGX2 CO2 T
Unlimited application range
tO ∆tOh pO pV2 Evaporating temperature (°C)
Suction gas superheat (K)
Suction pressure (bar)
Discharge end pressure (bar)
Max. permissible operating pressure (LP/HP)1): 90/130 bar
1)
LP = low pressure HP = high pressure
1 Application limit HGX2/130-4 CO2 T
CO2 Operating limits HAX2 CO2 T
Unlimited application range
tO ∆tOh pO pV2 Evaporating temperature (°C)
Suction gas superheat (K)
Suction pressure (bar)
Discharge end pressure (bar)
Max. permissible operating pressure (LP/HP)1): 90/130 bar
1)
1 Application limit HAX2/130-4 CO2 T
108 I www.bock.de
LP = low pressure HP = high pressure
CO2 compressors (transcritical) - Operating limits
Notes
Operating limits
Performance data
Compressor operation is possible within the limits shown on
the application diagrams. Please note the coloured areas.
Compressor application limits should not be chosen for design
purposes or continuous operation.
The performance data for CO2 are based on 10 K suctiongas superheating at 50 Hz. In case of subcritical operating
conditions, no liquid undercooling takes place. The performance data for transcritical operating conditions are specified close to the "optimal high pressure". The optimal high
pressure is thereby related to an ideal cyclic process.
01
Conversion factor for 60 Hz = 1,2
02
03
04
Notes
05
The compressors are equipped with Bock C55E, a special oil
filling, which is available directly from Bock. This is a synthetic
ester oil with high thermal load resistance, allowing good mixing solubility with CO2. It possesses a special additive, which
protects the compressors against wear, even when subjected to
extreme loads, such as those which exist in CO2 systems. This
oil can be used both in transcritical and subcritical systems.
temperature (C°)
Oil
06
40
30
07
20
phase separation
08
09
0
10
-20
11
12
-40
-50
-55
13
0
10
20
40
60
concentration (M-% oil in CO2)
www.bock.de I 109
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
HGX2/70-4 CO2 T
5
-5
-10
-15
-20
-25
-30
-35
-40
SUBCRITICAL
Q P 17900
4,10
14700
4,25
11850
4,30
9350
4,25
7200
4,10
5350
3,85
15
Q P 23650
4,10
19850
4,45
16450
4,65
13400
4,75
10700
4,70
8350
4,55
6300
4,35
4500
4,00
20
Q P 25150
4,45
21300
4,80
17850
5,05
14700
5,20
11900
5,20
9400
5,05
7200
4,85
5300
4,55
3650
4,15
25
Q P 25650
4,85
21900
5,25
18450
5,55
15350
5,70
12600
5,70
10100
5,60
7900
5,40
5950
5,10
4250
4,70
30
Q P 21050
5,75
17850
6,05
14950
6,25
12300
6,30
10000
6,20
7900
6,00
6100
5,70
4500
5,35
75
4650
5,45
24550
5,30
TRANSCRITICAL
30
pV2 75
Q 30350
P 5,15
75
26300
5,70
75
22600
6,15
75
19150
6,40
75
16050
6,50
75
13250
6,55
75
10700
6,40
75
8400
6,20
75
6400
5,85
35
pV2 85
Q 27050
P 6,45
85
23350
6,85
85
19950
7,15
90
17900
7,70
90
14850
7,65
90
12050
7,45
90
9600
7,20
90
7350
6,80
90
5400
6,35
40
pV2 100
Q 26050
P 8,15
100
22300
8,35
100
18850
8,45
100
15750
8,45
105
13250
8,60
105
10600
8,30
105
8250
7,90
100
6150
7,20
90
3800
6,35
45
pV2 110
Q 23050
P 9,15
110
19600
9,30
115
17100
9,70
115
14150
9,55
115
11500
9,30
120
9200
9,20
115
7000
8,45
100
4550
7,20
50
pV2 125
Q 21400
P 10,65
125
18100
10,65
130
15650
11,00
130
12900
10,75
130
10400
10,35
120
7700
9,20
105
4700
7,90
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
110 I www.bock.de
0
10
tga
°C
HGX2/70-4 CO2 T
10
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
HAX2/70-4 CO2 T
5
0
-5
-10
-15
-20
-25
-30
-35
-40
SUBCRITICAL
10
Q
P
19050
4,05
15700
4,20
12800
4,20
10350
4,15
8300
4,05
6600
3,90
15
Q
P
25000
4,15
21050
4,40
17550
4,55
14450
4,60
11800
4,60
9500
4,50
7600
4,30
6050
4,10
20
Q
P
26550
4,45
22550
4,75
18950
4,95
15750
5,05
13000
5,05
10550
4,95
8500
4,80
6750
4,60
5350
4,30
25
Q
P
27200
4,80
23200
5,20
19650
5,40
16500
5,55
13700
5,55
11250
5,50
9100
5,35
7300
5,10
5850
4,80
4600
4,50
30
Q P 22700
5,65
19300
5,95
16300
6,10
13600
6,15
11250
6,05
9200
5,90
7450
5,70
6000
5,40
4800
5,05
3800
4,65
tga
°C
26500
5,25
TRANSCRITICAL
pV2 75
Q 31950
5,15
P
75
27650
5,65
75
23750
6,00
75
20300
6,25
75
17150
6,35
75
14400
6,40
75
12000
6,30
75
9850
6,10
75
8050
5,85
75
6450
5,55
75
5150
5,15
80
4050
4,80
pV2 85
35 Q 28150
P 6,35
85
24300
6,75
85
20850
7,00
90
18800
7,55
90
15800
7,55
90
13200
7,40
90
10950
7,15
90
8950
6,85
90
7200
6,45
95
5650
6,10
95
4250
5,55
95
3050
5,00
pV2 100
40 Q 26450
P 8,10
100
22700
8,30
100
19350
8,40
100
16450
8,40
105
14200
8,60
105
11850
8,30
105
9750
7,90
105
7950
7,45
110
6450
7,10
110
4900
6,50
100
3500
5,65
45
pV2 110
Q 23100
P 9,20
110
19850
9,35
110
17000
9,30
110
14450
9,20
115
12800
9,30
115
10750
8,90
115
8950
8,45
115
7300
7,90
115
5800
7,25
110
4150
6,50
50
pV2 110
Q 17300
P 9,20
110
15000
9,35
110
12900
9,30
110
11050
9,20
115
10350
9,30
115
8700
8,90
115
7250
8,45
115
5900
7,90
115
4700
7,25
30
HAX2/70-4 CO2 T
10
01
02
03
04
05
06
07
08
09
10
11
12
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
13
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
www.bock.de I 111
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
HGX2/90-4 CO2 T
5
-5
-10
-15
-20
-25
-30
-35
-40
SUBCRITICAL
Q P 22800
5,30
18850
5,50
15300
5,50
12200
5,40
9500
5,15
7150
4,80
15
Q P 29950
5,45
25300
5,80
21100
6,05
17350
6,10
13950
6,05
10950
5,85
8350
5,50
6100
5,05
20
Q P 31900
5,90
27200
6,30
22900
6,60
19000
6,70
15500
6,70
12350
6,55
9600
6,25
7150
5,85
5050
5,25
25
Q P 32550
6,45
27900
6,90
23650
7,20
19800
7,35
16350
7,40
13200
7,30
10450
7,05
8000
6,65
5850
6,10
30
Q 30950
P 7,05
26600
7,55
22650
7,90
19050
8,10
15800
8,15
12900
8,05
10350
7,80
8050
7,45
6050
6,95
TRANSCRITICAL
30
pV2 75
Q 37550
P 6,95
75
32650
7,55
75
28100
8,00
75
23950
8,30
75
20150
8,45
75
16750
8,45
75
13650
8,30
75
10900
8,05
75
8450
7,65
75
6300
7,10
35
pV2 85
Q 33850
P 8,50
85
29350
8,95
85
25200
9,25
90
22850
9,90
90
19050
9,85
90
15700
9,65
90
12650
9,30
90
9900
8,80
90
7500
8,20
80
3750
7,25
40
pV2 100
Q 32750
P 10,55
100
28150
10,80
100
23950
10,90
100
20200
10,85
105
17150
11,00
105
13900
10,60
105
11000
10,05
100
8400
9,20
90
5250
8,20
45
pV2 110
Q 28900
P 11,85
110
24750
11,95
115
21700
12,40
115
18150
12,15
115
14950
11,75
120
12250
11,50
115
9450
10,55
100
6250
9,20
50
pV2 125
Q 26700
P 13,70
125
22750
13,60
130
20000
13,80
130
16750
13,40
130
13800
12,80
120
10250
11,50
105
6300
10,05
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
112 I www.bock.de
0
10
tga
°C
HGX2/90-4 CO2 T
10
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
HAX2/90-4 CO2 T
5
0
-5
-10
-15
-20
-25
-30
-35
-40
SUBCRITICAL
10
Q P 24200
5,10
20300
5,20
16800
5,25
13750
5,15
11050
5,00
8700
4,75
15
Q P 31300
5,30
26700
5,60
22550
5,75
18850
5,80
15550
5,75
12600
5,65
10000
5,40
7750
5,10
20
Q P 33250
5,80
28600
6,15
24350
6,35
20500
6,45
17100
6,45
14000
6,30
11300
6,10
8900
5,80
6800
5,40
25
Q P 33850
6,35
29250
6,75
25050
7,00
21300
7,10
17850
7,15
14850
7,05
12100
6,85
9700
6,55
7600
6,15
5750
5,70
30
Q 32200
P 7,00
27850
7,40
23950
7,70
20400
7,85
17250
7,90
14400
7,85
11900
7,65
9700
7,35
7750
6,95
6050
6,50
4600
5,90
tga
°C
TRANSCRITICAL
pV2 75
Q 39200
P 6,90
75
34400
7,45
75
29950
7,85
75
25850
8,10
75
22100
8,25
75
18700
8,25
75
15650
8,10
75
12850
7,90
75
10400
7,55
75
8250
7,15
75
6400
6,65
80
5000
6,15
pV2 85
35 Q 35050
P 8,40
85
30700
8,85
85
26650
9,10
90
24500
9,80
90
20900
9,75
90
17600
9,60
90
14650
9,30
90
12050
8,90
90
9700
8,35
95
7800
7,95
95
5950
7,15
95
4400
6,35
pV2 100
40 Q 33700
P 10,55
100
29300
10,80
100
25350
10,90
100
21750
10,85
105
19050
11,15
105
16000
10,80
105
13250
10,30
105
10850
9,70
110
8850
9,20
110
6900
8,35
100
5050
7,25
95
3550
6,35
45
pV2 110
Q 29850
P 11,95
110
25950
12,10
110
22400
12,05
110
19200
11,90
115
17000
12,05
115
14300
11,55
115
11900
10,95
115
9750
10,25
115
7800
9,40
110
5800
8,35
100
3700
7,25
50
pV2 110
Q 22350
P 11,95
110
19600
12,10
110
17050
12,05
110
14650
11,90
115
13750
12,05
115
11600
11,55
115
9650
10,95
115
7900
10,25
115
6300
9,40
110
4450
8,35
30
HAX2/90-4 CO2 T
10
01
02
03
04
05
06
07
08
09
10
11
12
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
13
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
www.bock.de I 113
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
10
15
HGX2/110-4 CO2 T
20
25
30
35
HGX2/110-4 CO2 T
40
45
50
5
-15
-20
-25
-30
-35
-40
Q
P
Q
P
Q
P
Q
P
Q
P
28550
6,75
23600
6,95
19200
7,00
15300
6,85
11900
6,55
8950
6,05
37500
6,85
31700
7,35
26450
7,60
21700
7,75
17500
7,65
13750
7,40
10500
7,00
7650
6,40
40000
7,45
34100
8,00
28700
8,35
23800
8,50
19450
8,50
15500
8,30
12050
7,90
9000
7,40
6350
6,65
40800
8,15
34950
8,70
29650
9,10
24850
9,30
20500
9,35
16600
9,20
13100
8,90
10050
8,40
7350
7,70
33350
9,55
28400
9,95
23900
10,20
19850
10,30
16200
10,15
12950
9,90
10100
9,40
7650
8,80
38850
8,95
-5
-10
TRANSCRITICAL
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
75
47150
8,80
75
41000
9,50
75
35300
10,05
75
30100
10,45
75
25350
10,65
75
21000
10,65
75
17150
10,50
75
13700
10,15
75
10600
9,65
75
7950
8,95
85
42550
10,70
85
36850
11,25
85
31650
11,65
90
28700
12,45
90
23950
12,40
90
19700
12,15
90
15900
11,70
90
12450
11,10
90
9450
10,35
80
4750
9,10
100
41200
13,35
100
35400
13,60
100
30150
13,75
100
25400
13,65
105
21550
13,90
105
17500
13,40
105
13850
12,70
100
10600
11,60
90
6650
10,35
110
36400
14,95
110
31150
15,05
115
27350
15,60
115
22850
15,30
115
18800
14,80
120
15400
14,50
115
11900
13,25
100
7850
11,60
125
33650
17,25
125
28700
17,15
130
25200
17,45
130
21100
16,85
130
17400
16,15
120
12900
14,50
105
7900
12,70
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
114 I www.bock.de
0
SUBCRITICAL
tga
°C
30
10
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
10
15
HAX2/110-4 CO2 T
20
25
30
35
HAX2/110-4 CO2 T
40
45
50
5
0
-5
-10
-15
-20
-25
-30
-35
-40
30500
6,45
25550
6,60
21200
6,60
17300
6,55
13950
6,30
11000
6,00
39450
6,70
33650
7,10
28450
7,30
23750
7,35
19600
7,30
15900
7,15
12650
6,85
9800
6,45
41900
7,35
36050
7,75
30700
8,05
25850
8,15
21550
8,15
17650
8,00
14250
7,70
11200
7,35
8600
6,85
42650
8,05
36850
8,50
31600
8,85
26800
9,00
22500
9,00
18700
8,90
15250
8,65
12250
8,25
9600
7,80
7300
7,20
35150
9,35
30200
9,75
25750
9,95
21750
10,00
18150
9,90
15000
9,65
12200
9,30
9800
8,80
7650
8,20
5850
7,50
SUBCRITICAL
Q
P
Q
P
Q
P
Q
P
Q
P
tga
°C
30
10
40600
8,80
TRANSCRITICAL
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
75
49450
8,70
75
43350
9,40
75
37750
9,90
75
32550
10,20
75
27850
10,40
75
23550
10,40
75
19700
10,25
75
16250
10,00
75
13150
9,55
75
10450
9,05
75
8050
8,40
80
6350
7,75
85
44200
10,60
85
38700
11,15
85
33600
11,50
90
30900
12,35
90
26350
12,30
90
22200
12,10
90
18500
11,70
90
15200
11,20
90
12250
10,55
95
9850
10,00
95
7550
9,05
95
5550
8,00
100
42450
13,30
100
36950
13,65
100
31950
13,75
100
27400
13,70
105
24000
14,05
105
20200
13,60
105
16750
13,00
105
13700
12,25
110
11150
11,65
110
8700
10,55
100
6350
9,15
95
4450
8,00
110
37650
15,10
110
32700
15,25
110
28250
15,25
110
24250
15,00
115
21500
15,20
115
18100
14,60
115
15050
13,85
115
12300
12,90
115
9850
11,90
110
7300
10,55
100
4700
9,15
110
28200
15,10
110
24700
15,25
110
21500
15,25
110
18500
15,00
115
17350
15,20
115
14650
14,60
115
12200
13,85
115
9950
12,90
115
8000
11,90
110
5600
10,55
01
02
03
04
05
06
07
08
09
10
11
12
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
13
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
www.bock.de I 115
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
10
15
HGX2/130-4 CO2 T
20
25
30
35
HGX2/130-4 CO2 T
40
45
50
5
-15
-20
-25
-30
-35
-40
Q
P
Q
P
Q
P
Q
P
Q
P
34050
8,00
28150
8,25
22900
8,30
18250
8,15
14150
7,75
10650
7,20
44700
8,15
37800
8,70
31550
9,05
25900
9,15
20850
9,10
16400
8,80
12500
8,30
9100
7,55
47700
8,85
40650
9,50
34200
9,90
28400
10,10
23150
10,05
18500
9,85
14350
9,40
10700
8,75
7550
7,90
48600
9,65
41700
10,35
35350
10,80
29600
11,05
24400
11,10
19750
10,90
15600
10,55
11950
9,95
8750
9,15
39750
11,30
33850
11,80
28450
12,10
23650
12,20
19300
12,05
15450
11,70
12050
11,15
9050
10,40
46250
10,60
-5
-10
TRANSCRITICAL
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
75
56100
10,40
75
48750
11,30
75
41950
11,95
75
35750
12,40
75
30100
12,60
75
25000
12,60
75
20400
12,45
75
16250
12,05
75
12600
11,40
75
9450
10,60
85
50550
12,70
85
43800
13,35
85
37650
13,80
90
34100
14,80
90
28500
14,70
90
23450
14,40
90
18900
13,90
90
14800
13,15
90
11250
12,25
80
5650
10,80
100
48950
15,80
100
42050
16,15
100
35800
16,25
100
30150
16,20
105
25600
16,45
105
20800
15,85
100
16300
14,70
100
12600
13,75
90
7900
12,25
110
43150
17,70
110
37000
17,85
115
32450
18,50
110
26300
17,50
110
21750
17,00
105
16800
15,85
100
12100
14,70
100
9350
13,75
125
39900
20,45
120
32600
19,50
115
26100
18,50
110
20100
17,50
110
16650
17,00
105
11850
15,85
100
7800
14,70
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
116 I www.bock.de
0
SUBCRITICAL
tga
°C
30
10
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
CO2 compressors (transcritical) - Performance data
CO2
Performance data
50 Hz
•
Type
Cooling capacity QO [W]
Power consumption Pe [kW]
Evaporating temperature °C
15
tc
°C
10
15
HAX2/130-4 CO2 T
20
25
30
35
HAX2/130-4 CO2 T
40
45
50
5
0
-5
-10
-15
-20
-25
-30
-35
-40
36150
7,65
30300
7,80
25100
7,85
20500
7,75
16500
7,50
13000
7,15
46750
7,95
39900
8,40
33700
8,65
28150
8,75
23200
8,65
18850
8,45
14950
8,10
11600
7,65
49650
8,70
42700
9,20
36350
9,50
30650
9,65
25500
9,65
20950
9,45
16850
9,15
13300
8,70
10150
8,10
50550
9,50
43650
10,10
37450
10,50
31800
10,65
26700
10,70
22150
10,55
18100
10,25
14500
9,80
11350
9,25
8600
8,55
41650
11,10
35800
11,55
30500
11,80
25800
11,85
21550
11,75
17800
11,45
14500
11,00
11600
10,45
9050
9,70
6900
8,90
SUBCRITICAL
Q
P
Q
P
Q
P
Q
P
Q
P
tga
°C
30
10
48100
10,45
TRANSCRITICAL
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
pV2
Q
P
75
58550
10,30
75
51350
11,10
75
44700
11,70
75
38600
12,10
75
33000
12,30
75
27950
12,30
75
23350
12,15
75
19250
11,80
75
15600
11,35
75
12350
10,70
75
9600
9,95
80
7500
9,20
85
52350
12,55
85
45850
13,20
85
39850
13,60
90
36650
14,65
90
31200
14,60
90
26300
14,30
90
21950
13,90
90
18000
13,30
90
14550
12,50
95
11650
11,85
95
8900
10,75
95
6550
9,45
100
50350
15,80
100
43800
16,15
100
37850
16,30
100
32500
16,25
100
27600
16,00
100
23250
15,55
100
19300
14,90
95
14900
13,70
95
12000
12,85
95
9450
11,85
95
7200
10,75
95
5300
9,45
105
41550
16,85
105
36250
17,10
105
31400
17,15
100
24000
16,25
100
20450
16,00
100
17250
15,55
100
14300
14,90
95
9500
13,70
95
7600
12,85
95
5950
11,85
105
28400
16,85
105
25100
17,10
105
21900
17,15
100
15300
16,25
100
13150
16,00
100
11100
15,55
100
9250
14,90
01
02
03
04
05
06
07
08
09
10
11
12
Subcritical performance data 50 Hz
Relative to 10 K suction gas superheat without liquid subcooling
Transcritical performance data 50 Hz
Relative to 10 K suction gas superheat
The performance data are indicated at a high pressure level,
which is close to an optimal high pressure level. Optimal high
pressure is thereby related to an ideal cyclic process.
13
tc = Condensing temperature
tga = Gas cooler outlet temperature
pV2 = Pressure at the compressor outlet [bar]
Optimal high pressure is outside of the operating limits.
Performance data are indicated at maximal possible
high pressure.
www.bock.de I 117
CO2 compressors (transcritical) - Technical data
CO2
Number Displacement
of
50 / 60 Hz
cylinders
Electrical data 3
Voltage
1
Type
m³/h
Max.
working
current
2
Max. power
consumption
A
kW
Weight
Starting
current
Connections 5
Oil
charge
Discharge line
DV
Suction line
SV
kg
mm
mm
Ltr.
(rotor locked)
2
PW*1+2
A
PW*1/PW*1+2
HGX2/70-4 CO2 T
2
6,20 / 7,40
4
18,5
11,3
57 / 75
145
18
22
2,5
HAX2/70-4 CO2 T
2
6,20 / 7,40
4
15,1
9,3
57 / 75
149
18
22
2,5
HGX2/90-4 CO2 T
2
7,70 / 9,30
4
24,4
14,4
82 / 107
160
18
22
2,5
HAX2/90-4 CO2 T
2
7,70 / 9,30
4
20,5
12,0
82 / 107
160
18
22
2,5
HGX2/110-4 CO2 T
2
9,70 / 11,60
4
32,2
19,2
110 / 141
160
18
22
2,5
HAX2/110-4 CO2 T
2
9,70 / 11,60
4
26,7
15,7
110 / 141
163
18
22
2,5
HGX2/130-4 CO2 T
2
11,50 / 13,80
4
43,3
25,7
127 / 161
160
18
22
2,5
HAX2/130-4 CO2 T
2
11,50 / 13,80
4
31,8
18,5
127 / 161
160
18
22
2,5
* PW = Part Winding, motors for part winding start
1 = 1. part winding
Oil sump heater 110-240 V - 1 - 50/60 Hz (standard)
-- PTC heater, 50-120 W, self-regulating
i
2 = 2. part winding
Fan motor for the HA version 230 V - 1 - 50/60 Hz
140 W / 0,71 A
Oil sump heater is necessary due to the high
CO2 solubility in the oil.
Explanations:
1 Tolerance (± 10%) relates to the mean value of the voltage
range. Other voltages and current types on request.
2 Take account of the max. operating current / max. power
consumption when designing contactors, leads and fuses.
Switches: Service category AC3
3 All data are based on the mean value of the voltage range.
118 I www.bock.de
4 380-420 V Y/YY - 3 - 50 Hz PW
440-480 V Y/YY - 3 - 60 Hz PW
PW = Part Winding, Part Winding, motors for part winding start
(no start unloaders required)
- Winding ratios: 66% / 33%
- Designs for Y/∆ on request
5 Compression joint for steel pipes
CO2 compressors (transcritical) - Dimensions and connections
HGX2 CO2 T
HGX2/70-4 CO2 T
HGX2/90-4 CO2 T
HGX2/130-4 CO2 T
320
A2
134
A
B2
B1
262
175
ca.180
O
J
4x
11
210
260
ca.300
370
555
ca.630
H
E
01
K
02
F,M
03
04
22
ca.235
L1
DV
B
ca.415
SV A1
52
HGX2/110-4 CO2 T
05
06
07
HAX2 CO2 T
HGX2/70-4 CO2 T
HGX2/90-4 CO2 T
HGX2/110-4 CO2 T
HGX2/130-4 CO2 T
134
134
B2
B1
DV
B
ca.670
Dimensions in mm
Centre of gravity
175
O
L1
11
A1
SV
A
H
E
K
12
F,M
4x
11
210
260
ca.340
22
J
262
ca.415
ca.170
52
ca.245
370
09
10
320
A2
08
-- Connections see page 120
-- Dimensions for anti-vibration pad see page 120
www.bock.de I 119
13
CO2 compressors (transcritical) - Dimensions and connections
Dimensions for anti-vibration pad
Type
HGX2 CO2 T, HAX2 CO2 T
Connections
Øa
b
c
d
mm
mm
mm
mm
50
30
M10
25
HGX2 CO2 T / HAX2 CO2 T
SV
DV
Suction line
Discharge line
A
Connection suction side,
not lockable
7
A1
Connection suction side,
lockable
7
A2
Connection suction side,
not lockable
1
B
Connection discharge side,
not lockable
7
B1
Connection discharge side,
lockable
7
B2
Connection discharge side,
not lockable
1
E
Connection
oil pressure gauge
7
F
Oil drain
M22 x 1,5
H
Oil charge plug
1
J
Oil sump heater
K
Sight glass
L1
Thermal protection thermostat
1
M
Oil filter
M22 x 1,5
O
Connection oil level regulator
120 I www.bock.de
Please refer to technical data! Page 118
/16 " UNF
/16 " UNF
/8 " NPTF
/16 " UNF
/16 " UNF
/8 " NPTF
/16 " UNF
/8 " NPTF
Ø 15 mm
G1 "
/8" NPTF
G1 "
CO2 compressors (transcritical) - Scope of supply
Scope of supply HGX2 CO2 T / HAX2 CO2 T
Semi-hermetic 2 cylinder reciprocating compressor with drive motor for part winding start – 4 pole version
380-420 V Y/YY - 3 - 50 Hz
440-480 V Y/YY - 3 - 60 Hz
Single-section compressor housing
HA-Version: Motor is cooled by an integrated fan with air deflection hood
230 V - 1 - 50/60 Hz, 140 W / 0,71 A
Winding protection with PTC resistor sensors and electronic motor protection unit Bock MP10
Thermal protection thermostat (PTC sensor) IP67
01
Oil sump heater 110-240 V - 1 - 50/60 Hz, 50-120 W
PTC heater, self regulating
Oil charge: Bock C55E
02
1)
Sight glass
03
Compressor decompression valve suction and discharge line
04
Suction and discharge line shut off valve incl. cutting ring version
05
Inert gas charge
4 anti-vibration pads enclosed
06
Also available as refill unit in 1 or 5 liter packaging
07
1)
08
09
10
11
12
13
www.bock.de I 121