Semi-Hermetic Compressors HG CO2 Compressors Subcritical

The compressors are used in cascade and booster systems in supermarket, commercial and industrial cooling applications.

  • Gas-cooled semi-hermetic reciprocating compressor 
  • Subcritical CO2 operating conditions (low temperature application)
  • Displacement from 1.6 to 48.2 m³/h (50 Hz) 
  • Operating pressures of up to 51 bar (tc =15°C) 
  • Designed for subcritical CO2:
                Standstill pressure LP 40 bar (27 bar) / HP 55 bar
                High efficiency at low temperature applications (to < -15°C)

Important Information

  • CO2 applications require new kind of system and control. 
  • They are not a general solution for the substitution of F-gases. 
  • Notes in the assembly manual regarding the handling of CO2 compressors must be followed. 
  • Therefore, we would specifically draw your attention to the fact that this information is presented according to our current level of knowledge and may change at any time due to further development.

Special Features

  • High compressor efficiency for low operating costs
  • High durable compressor design
  • Wide operating limits and wide frequency range for different applications
  • Reliable and safe oil supply through pump lubrication
  • Good operational characteristics with low vibration, pulsations and low noise levels
  • Wide operating limits and wide frequency range
  • Pressure relief valves on LP and HP
Think green, choose blue.

The current programm

4 model sizes with 17 capacity stages from 1.6 to 48.2 m³/h (50 Hz)

4 model sizes with 17 capacity stages from 1.6 to 48.2 m³/h (50 Hz)

HG CO2 subcritical
Current types Displacement at 50 Hz (1450 rpm) m³/h
HGX12e 1.6 2.6 3.6 4.5 5.4 6.4
HGX22e 7.5 9.2 11.2
HGX34e 12.7 14.9 18.4 22.3
HGX4 27.1 33.5 40.5 48.2

More information about the HG CO2 compressors subcritical (e.g. technical/performance data, drawings, spare part lists, operating limits) can be found in the compressor selection tool VAP via the following link: VAP compressor selection HG CO2 compressors subcritical