2. GEA Refrigeration Technologies2 Semi-hermetic Bock Compressors
HG and HA Series
Suction gas-cooled semi-hermetic
compressor
Air-cooled semi-hermetic compressor
for low temperature applications
4. GEA Refrigeration Technologies
HA Series
HA-Principle â Cooling of the drive motor with integrated ventilation unit
Semi-hermetic Bock Compressors4
5. GEA Refrigeration Technologies5 Semi-hermetic Bock Compressors
Highlights HG/HA 12 + 22 series:
⢠2-cylinder design
⢠7 capacity stages: 5,4 to 16,2 m³/h [50 Hz]
6,4 to 19,8 mÂł/h [60 Hz]
⢠Extended standard equipment
⢠Standard oil pump, motor protection system MP10
⢠Extremely compact
⢠Particularly low installation height and width
⢠Same footprints as competitor models
⢠Capacity control with Bock Electronic Frequency
Control (EFC)
⢠Start unloader with Bock Electronic Soft Start (ESS)
(
Pluscom 2-cylinder compressors
6. GEA Refrigeration Technologies6 Semi-hermetic Bock Compressors
Pluscom 4-cylinder compressors
Highlights HG/HA 34 series:
⢠4-cylinder design
⢠4 capacity stages: 18,8 to 33,1 m³/h [50 Hz]
22,6 to 39,7 mÂł/h [60 Hz]
⢠Extended standard equipment
⢠Standard oil pump, motor protection system MP10
⢠Extremely compact
⢠Particularly low installation height and width
⢠Capacity control with
⢠Bock Electronic Frequency Control (EFC)
⢠Mechanical capacity unloader (50%) (
⢠Start unloader with Bock Electronic Soft Start (ESS)
(
7. GEA Refrigeration Technologies7 Semi-hermetic Bock Compressors
4-cylinder compressors
Highlights HG/HA 4+5+6 series:
⢠4-cylinder compressors
⢠9 capacity stages: 40,5 to 122,4 m³/h [50 Hz]
48,6 to 146,9 mÂł/h [60 Hz]
⢠Part winding motor
⢠Drive motor flange mounted onto compressor
casing
⢠Extended standard equipment
⢠Standard oil pump, motor protection system MP10
⢠Capacity control with
⢠Bock Electronic Frequency Control (EFC)
⢠Mechanical capacity unloader (50%) (
⢠Start unloader with Bock Electronic Soft Start (ESS)
(
13. GEA Refrigeration Technologies
In operation with Heat Exchanger
and obtained Subcooling Îtch= 50 K,
you can reach >40% more efficiency!
Evaporating Temperature °C
SubcoolingTemperature°C
exitheatexchanger
Diagram to determine subcooling temperature
on exit heat exchanger
6-cylinder two-stage compressor HGZ7
14. GEA Refrigeration Technologies
6-cylinder two-stage compressor HGZ7
Highlights HGZ7 series:
⢠6-cylinder compressor
⢠3 capacity stages:
HGZ7/2110 HP 61,2 / LP 122,4 m3/h (50Hz)
HGZ7/1860 HP 53,8 / LP 107,6 m3/h
HGZ7/1620 HP 46,9 / LP 93,7 m3/h
⢠Part Winding Motor
⢠Refrigerant R404; R410A; R22
15. GEA Refrigeration Technologies15 Semi-hermetic Bock Compressors
8-cylinder compressors
Highlights HG8 series:
⢠8-cylinder compressors
⢠3 capacity stages: 214,3 m³/h
245,9 mÂł/h 50 Hz
279,8 mÂł/h
⢠Part winding motor
⢠Common casing for compressor and motor
⢠Capacity control with
⢠Bock Electronic Frequency Control (EFC)
⢠Mechanical capacity unloader (33/66%) (
16. GEA Refrigeration Technologies16 Semi-hermetic Bock Compressors
Special Features: Wear-resistant durable driving gear
Pluscom 2- and 4-cylinder compressors
⢠Solid construction and design
⢠Low friction sleeve bearings
⢠Aluminium pistons with two ring assembly
4-, 6- and 8-cylinder compressors
⢠Solid construction and design
⢠Low friction sleeve bearings
⢠Surface-hardened crankshaft
⢠Aluminium pistons with triple ring assembly,
HG(HA)4 with double ring assembly
⢠Aluminium connecting rod with high
resistance piston bolt bearings starting
HG(HA)5
17. GEA Refrigeration Technologies17 Semi-hermetic Bock Compressors
Special features: Solid construction and design
HG(HA)5-6
HG7-8
⢠Valve made of high quality impact-resistant
spring steel
⢠Concentric reed valve on the suction side 2
HG(HA)12-34
HG(HA)4
⢠Valve made of high quality impact-resistant
spring steel
⢠Finger reed valve 1
1 2
18. GEA Refrigeration Technologies
Special features: Safe, reliable oil supply
⢠Lubricating system with oil pump independent of rotation direction
⢠Large volume oil sump
Semi-hermetic Bock Compressors18
19. GEA Refrigeration Technologies19 Semi-hermetic Bock Compressors
Special Features: Variable suction line valve position (HG)
2- and 4-cylinder 6- and 8-cylinder
⢠Shutoff valve rotates through 90° (2 and 4 cylinder), suction cover rotates through 90° (8-cylinder)
⢠Flexible location for suction line connection
20. GEA Refrigeration Technologies20 Semi-hermetic Bock Compressors
Special features: Oil sump heater
⢠Standard in 4-, 6- and 8-cylinder compressors
HG(HA)4 up to HG8
⢠Immersion case design
⢠Replacement possible without opening the
refrigerating circuit
⢠Optional in 2- and 4-cylinder compressors
HG(HA)12 up to HG(HA)34
⢠PTC heater, self-regulating
⢠Replacement without opening the refrigeration
circuit
21. GEA Refrigeration Technologies
⢠Easy electrical installation due to large internal
volume
⢠Terminal block with cables in glass seal model
⢠Hinged lifting cover with a single quick fastener
(6-cylinder)
⢠Cover with simple snap closure (8-cylinder)
⢠Inspection window for compressor monitoring
(8-cylinder)
⢠Protection system: 4-cylinder IP65; 6- and 8-
cylinder IP54
⢠Robust aluminium construction
⢠Easy electrical installation due to large
internal volume
⢠Terminal block with cables in glass seal
model
⢠Hinged and removable lifting cover
with a single quick fastener
⢠Terminal strip for add-on components
⢠Protection system: IP66
2
21 Semi-hermetic Bock Compressors
Special Features: Electrical switch box
1
1
2
22. GEA Refrigeration Technologies22 Semi-hermetic Bock Compressors
Bock MP10 Electronic Motor
Protection
Special Features
Bock Compressor Management
BCM2000
⢠Standard with all compressors
⢠Temperature monitoring with PTC sensors
and optical status indicators
⢠Discharge gas temperature sensor
(option)
⢠Innovative and advanced compressor
management system
⢠Optional for 4-, 6- and 8-cylinder
compressors
23. GEA Refrigeration Technologies23 Semi-hermetic Bock Compressors
Via frequency converter
Continuously variable speed control using the
Bock EFC / EFCe
(Electronic Frequency Control)
Up to 25% less power consumption
EFC Continuously variable speed control
directly mounted on the compressor
HG(HA)12 to HG(HA)34
Special features: Efficient capacity control (option)
2
Via capacity regulator
Cylinder cover incorporating a connection for
capacity control
Possible control stages:
⢠4-cylinder: 50 %,
⢠6-cylinder: 33 % / 66 %,
⢠8-cylinder: 25 % / 50 % / 75 %
1
1
2
24. GEA Refrigeration Technologies
Product summary HG12 â HG8
8 model sizes with 26 capacity stages
in 2-, 4-, 6- and 8-cylinder design with swept volumes from 5,4 up to 279,8 m3/h [50 Hz]
25. GEA Refrigeration Technologies
Product summary HA12 â HA6
6 model sizes with 20 capacity stages
in 2-, 4- and 6-cylinder design with swept volumes from 5,4 up to 122,4 m3/h [50 Hz]
Semi-hermetic Bock Compressors25
26. GEA Refrigeration Technologies
Semi-hermetic compressor types
26 Semi-hermetic Bock Compressors
CO2 subcritical CO2 transcritical
One-stage
compressors
R407C up to 35 bar
ATEX Version HC Version for
Hydrocarbons
Aluminium Version 2-pole motor design
Two-stage
compressors
Duplex Condensing /
receiver units
28. GEA Refrigeration Technologies
Additional accessories
Oil temperature
control
Water-cooled cylinder
covers
Additional fan
Connection piece in
welded construction
Intermediate adapter
for discharge line valve
Semi-hermetic Bock Compressors28