Search for Capacity/Type
Semi-hermetic compressors>
Semi-hermetic units>
Open type compressors>
Former types>

CO2-Compressors (transcritical)

HG CO2 T transcritical

HG P CO2 T transcritical (LSPM)

Types Displacement at 50 Hz (1500 rpm) m³/h Former types
HGX24 4.8 6.2 7.9 9.7
HGX34 10.2 11.7 13.3 15.0 16.9 18.8 20.8 26.3
HGX46 25.3 28.2 31.2 39.5

HG CO2 T transcritical
Gas-cooled semi-hermetic reciprocating compressors
• Operating pressures up to 130 bar
• Designed for transcritical CO2 systems: standstill pressures LP 100 bar / HP 150 bar
• Highest compressor and system efficiency due to specific CO2 design

 HG P CO2 T transcritical (LSPM)
Series with LSPM motor technology (LSPM=Line Start Permanent Magnet) with otherwise the same technical characteristics as the series with standard asynchronous motor
• The higher efficiency of the LSPM motor technology results in increased efficiency and lower operating costs at the same time
• Synchronous operation without slip and thus higher speed compared to standard asynchronous motors with the same robustness
• Thus higher refrigerant mass flow with more cooling or heating capacity
• No power losses in the rotor, resulting in higher motor and overall compressor efficiency (by an average of about 6 percent compared to a standard asynchronous motor)
• Operation can be flexible on the mains or via a frequency converter

Special features of CO2 compressor technology transcritical
Highest efficiency with low operating costs
• Durable compressor design due to the selection of high-quality components
• Reliable and safe oil supply through pump lubrication
• Low oil throw
• Good operating characteristics with low vibration, low pulsation and low operating noise
• Broad operating limits and wide frequency range for a wide variety of applications
• Pressure relief valves for suction and pressure range

 Important information
Bock has been involved with CO2 compressor technology since 1993
• CO2 applications require new system technology and control
• CO2 applications are not a general solution for substituting F-gases
• The notes on handling CO2 compressors in the installation instructions must be followed
• All information is based on current knowledge and may change at any time due to further development of the technology