HG compressors - HG12P CO2

Semi-hermetic compressors for subcritical CO2 applications

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Based on our current semi-hermetic product range, with its out-standing advantages and features, as well as our longstanding activities, we are now expanding the bottom end of our CO2 com-pressor series for subcritical cascade systems.

Especially suited to supermarket refrigeration applications and industrial refrigeration.

Max. permissible operating pressure see operating limits diagram.

Special features

As Bock compressors are extremely high quality and robust, the coordination with the CO2 is limited primarily to the motor design together with the individual mechanism adjustments as well as small modifications in the valve and seal areas.This permits the greatest possible level of operational safety through the extensive use of tried-and-trusted standard parts. In addition, there are the best possible conditions for economic spare part storage.

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.Carbon dioxide is available naturally in large quantities.

CO2 compressors (subcritical) - At a glance

Type key | Compressors for CO2 (subcritical)

HGX12P / 30 - 4 CO2

CO2 Version 3)

Number of poles Swept volume Pluscom 2) Number of cylinders 2) Size Ester oil filling Series 1)

1) HG = Hermetic Gas-cooled (suction gas-cooled) 2) Additional declaration for Pluscom compressors3) CO2 design

The current program...4 model sizes with 15 capacity stages from 2,8 to 48,2 m³/h (50 Hz)

50

25

Disp

lacem

ent m

/h3

= New!

2,8

m /h3

HGX12P CO2 HGX22P CO2 HGX4 CO2HGX34P CO2

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CO2 Operating limits

Unlimited application range

tO Evaporating temperature (°C)tC Condensing temperature (°C)∆tOh Suction gas superheat (K)

1 HGX12P/75-4 CO2 Max. condensing temperature tC = 0 °C

Max. permissible operating pressure (LP/HP)1): 40/55 bar

1) LP = low pressure HP = high pressure

Notes

Operating limits

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.

Performance data

The performance data for CO2 are based on 20 K suction gas superheat without liquid subcooling, at 50 Hz power supply fre-quency. These are preliminary values as no uniform reference data are available. Besides which the influence of the oil part on refrigeration performance is largely unknown. Variations can-not be excluded.

Conversion factor for 60 Hz = 1.2

Performance data for other operating points, see Bock software.

CO2 compressors (subcritical) - Operating limits

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Type Cond.temp.

°C

Cooling capacity QO [W] Power consumption Pe [kW]

Evaporating temperature °C

-25 -30 -35 -40 -45 -50

NEW:HGX12P/30-4 CO2

-20 QP

56740,80

4482 0,89

3451 0,92

25990,90

-15 QP

65910,90

53061,00

4161 1,05

31741,04

23661,00

-10 QP

74971,00

61501,12

49211,18

3830 1,20

28951,16

21371,10

-5 QP

69701,25

5688 1,33

4523 1,36

3493 1,35

2618 1,29

19161,21

0 QP

6419 1,50

5210 1,55

4115 1,55

31531,51

23441,44

HGX12P/40-4 CO2

-20 QP

72361,06

57631,13

44511,16

33031,15

-15 QP

83841,14

67791,25

53421,31

40791,31

29931,28

-10 QP

96011,26

78591,41

62951,49

49121,51

37161,49

27081,42

-5 QP

89821,59

72861,71

57811,75

44701,73

33571,66

24451,54

0 QP

82951,95

66642,01

52352,01

40121,93

30001,81

HGX12P/50-4 CO2

-20 QP

90401,30

71951,40

55541,45

41071,45

-15 QP

104811,44

84631,56

66711,64

50961,65

37271,61

-10 QP

120191,60

98131,76

78561,85

61371,89

46471,85

33741,75

-5 QP

112271,99

90902,11

72132,16

55872,14

42002,06

30421,89

0 QP

103582,41

83082,49

65302,49

50152,41

37502,25

HGX12P/60-4 CO2

-20 QP

108551,56

85891,71

66341,76

49661,72

-15 QP

126311,71

101361,90

79651,97

60961,96

45061,88

-10 QP

144931,89

117742,12

93942,23

73292,25

55572,18

40572,06

-5 QP

134782,38

108932,54

86372,58

66902,54

50272,44

36272,28

0 QP

124352,90

99952,98

78772,97

60582,89

45152,75

HGX12P/75-4 CO2

-20 QP

134841,87

106522,08

82112,15

61342,10

-15 QP

157042,06

125872,33

98772,44

75492,43

55762,31

-10 QP

180092,28

146172,61

116502,77

90812,79

68832,71

50302,54

-5 QP

167032,92

134893,14

106903,21

82783,16

62273,01

45112,80

0 QP

153543,56

123353,68

97203,66

74823,55

55963,36

•

Relating to 20 K suction gas superheatwithout liquid subcooling

CO2 Performance data 50 Hz

CO2 compressors (subcritical) - Performance data

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CO2 compressors (subcritical) - Technical data

Explanations:

CO2

Type

Numberof

cylinders

Displacement50 / 60 Hz

(1450/1740 1/min)

Electrical data 3 Weight Connections 5 Oil charge

Voltage

1

Max.working current

2

Max. powerconsumption

2

Startingcurrent

(rotor locked)

Discharge line DV

Suction line SV

m³/h A kW A kg mm I inch mm I inch Ltr.

∆ / Y ∆ / Y

HGX12P/30-4 CO2 2 2,80 / 3,40 4 5,9 / 3,4 1,8 40 / 23 49 12 / 1/2 16 / 5/8 0,9

HGX12P/40-4 CO2 2 3,60 / 4,40 4 7,3 / 4,2 2,3 43 / 25 49 12 / 1/2 16 / 5/8 0,9

HGX12P/50-4 CO2 2 4,50 / 5,40 4 8,7 / 5,0 2,9 43 / 25 49 12 / 1/2 16 / 5/8 0,9

HGX12P/60-4 CO2 2 5,40 / 6,40 4 9,5 / 5,5 3,2 45 / 26 53 12 / 1/2 16 / 5/8 0,9

HGX12P/75-4 CO2 2 6,70 / 8,10 4 10,6 / 6,1 3,6 45 / 26 53 12 / 1/2 16 / 5/8 0,9

Tolerance (± 10%) relates to the mean value of the voltagerange. Other voltages and current types on request.

Take account of the max. operating current / max. powerconsumption when designing contactors, leads and fuses.Switches: Service category AC3

All data are based on the mean value of the voltage range.

220-240 V ∆ / 380-420 V Y - 3 - 50 Hz 265-290 V ∆ / 440-480 V Y - 3 - 60 Hz

For soldering connections

Oil sump heater 110-240 V - 1 - 50/60 Hz 50-120 W PTC heater, self-regulating, installation in housing bore

1

2

3

4

5

New!

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Dimensions for anti-vibration pad see page 7

HGX12P CO2HGX12P/30-4 CO2 HGX12P/40-4 CO2

HGX12P/50-4 CO2

HGX12P/60-4 CO2 HGX12P/75-4 CO2

1) SV 90° rotatableCentre of gravity

Connections HGX12P CO2

SVDV

Suction lineDischarge line

Please refer to technical data, page 5

A* Connection suction side, not lockable 1/8 " NPTF

A1 Connection suction side, lockable 7/16 " UNF

B Connection discharge side, not lockable 1/8 " NPTF

B1 Connection discharge side, lockable 7/16 " UNF

D1 Connection oil return from oil separator 1/4 " NPTF

E Connection oil pressure gauge 1/8 " NPTF

F Oil drain M 8

H Oil charge plug 1/4 " NPTF

J1 Oil sump heater Ø 15 mm

K Sight glass 11/8" - 18 UNEF

L1 Thermal protection thermostat 1/8 " NPTF

O Connection oil level regulator 11/8" - 18 UNEF

S|1 Decompression valve HP 1/8 " NPTF

S|2 Decompression valve LP 1/8 " NPTF

CO2 compressors (subcritical) - Dimensions and connectionsca

.115

ca.135

1)

A1

J1

SV

SI2 X

318415ca.

20866

ca.30

DV

H,D1

FK,O

B1

L1A*

E

B100

244

98162192

280

4x 10ca

.

ca.240SI1X

Dimensions in mm

* = Only with additional adapter possible!

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CO2 compressors (subcritical) - Dimensions and connections

Dimensions with accessories

Dimensions for anti-vibration pad

Accessories

Continuously variable speed control by means of a Bock EFC(Electronic Frequency Control), compactly built onto compressor andconnected ready-to-operate: IP65

Compressor oil Bock C85E as 1 liter refill unit

Additional fan 220-240 V - 1 - 50/60 Hz,72/68 W, IP44 enclosed

Scope of supply

Semi-hermetic 2 cylinder reciprocating compressorwith drive motor for direct start220-240 V ∆ / 380-420 V Y - 3 - 50 Hz265-290 V ∆ / 440-480 V Y - 3 - 60 HzSingle-section compressor housing with hermetically integrated electric motor

Winding protection with PTC resistor sensors and electronicmotor protection unit Bock MP10

Thermal protection thermostat (PTC sensor)

Direct connection possibility of oil level controllersESK, AC+R oder CARLY

Oil sump heater 110-240 V - 1 - 50/60 Hz, 50-120 WPTC heater, self regulating

Oil charge: Bock C85E

Sight glass

Decompression valve

Inert gas charge

4 anti-vibration pads enclosed

Decompression valve for HP- and LP-side

1

ca.455

EFC Electronic Frequency Control Additional fan 1 2

1

ca.455

1

ca.500

1

ca.460

ca.3152

ca.500

1

ca.460

ca.315

Bock Kältemaschinen GmbHBenzstraße 7D-72636 FrickenhausenTelephone: +49 7022 9454-0Fax: +49 7022 9454-137mail@bock.dewww.bock.de

Art.No. 96173-09.2010-GbSubject to change without notice