TURBOMACHINERY

Absolut System offers circulators, pumps, compressors and turbines for space, industrial and laboratory applications.

Absolut System offers circulators, pumps, compressors and turbines for space, industrial and laboratory applications.

TURBOMACHINERY

Absolut System offers circulators, pumps, compressors and turbines for space, industrial and laboratory applications.

How it works

How it works

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A turbomachine is a system that transfers energy between a rotating part, called a rotor, and a fluid. Absolut System supplies motor-compressors and turbo-alternators specifically designed for applications at cryogenic temperatures (<120K).

Our turbomachines are made up of two main parts: the stator part, comprising an electric motor or alternator, and the rotor part, comprising the rotating shaft through which the fluid flows.

Turbomachine types

Turbomachine types

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There are two main categories of turbomachines:

There are two main categories of turbomachines:

There are two main categories of turbomachines: 

There are two main categories of turbomachines: 

  • Pumps, compressors and circulators

    Turbines

    Pumps, compressors
    and circulators

    Turbines

    The kinetic energy of the rotor’s rotation is transferred to the fluid and converted into mechanical energy: the pressure increases.

    Pumps compress liquids, whereas compressor and circulator fluids are gaseous. For both pumps and compressors, the pressure differential between the fluid entering and leaving the system is high. In the case of circulators, on the other hand, the increase in pressure remains low, as their primary role is to generate fluid flow.

    Pressure rise varies with rotor speed. The higher the speed, the greater the available energy and the greater the fluid compression.

  • Pumps, compressors and circulators:

    Turbines

    Pumps, compressors
    and circulators:

    Turbines

    turbomachines_turbine_cryogenique_supraconductivite

    The compressed fluid expands, driving the shaft in rotation. This transfer of energy from the fluid to the rotor produces a mechanical torque that usually drives an alternator or pump.

    When a turbo-alternator and a motor-compressor are included in the same thermodynamic cycle, part of the energy recovered by the turbine alternator is used to power the electric motor driving the compressor rotor. This management of electrical energy results in a better energy ratio (cooling power/overall operating power).

    turbomachines_turbine_cryogenique_supraconductivite
  • Pumps, compressors and circulators

    Turbines

    Pumps, compressors
    and circulators

    Turbines

    The kinetic energy of the rotor’s rotation is transferred to the fluid and converted into mechanical energy: the pressure increases.

    Pumps compress liquids, whereas compressor and circulator fluids are gaseous. For both pumps and compressors, the pressure differential between the fluid entering and leaving the system is high. In the case of circulators, on the other hand, the increase in pressure remains low, as their primary role is to generate fluid flow.

    Pressure rise varies with rotor speed. The higher the speed, the greater the available energy and the greater the fluid compression.

  • Pumps, compressors and circulators:

    Turbines

    Pumps, compressors
    and circulators:

    Turbines

    turbomachines_turbine_cryogenique_supraconductivite

    The compressed fluid expands, driving the shaft in rotation. This transfer of energy from the fluid to the rotor produces a mechanical torque that usually drives an alternator or pump.

    When a turbo-alternator and a motor-compressor are included in the same thermodynamic cycle, part of the energy recovered by the turbine alternator is used to power the electric motor driving the compressor rotor. This management of electrical energy results in a better energy ratio (cooling power/overall operating power).

    turbomachines_turbine_cryogenique_supraconductivite

Our technologies

Our technologies

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Our advanced technologies (hydrodynamic gas bearings, high-efficiency centrifugal impellers) make our compressors, pumps, circulators and turbines highly reliable and efficient systems, even in the most demanding environments.

Absolut Cryo circulateur Tungsténe 3-Récupéré

Key Points

Pumps, compressors and circulators: increase fluid pressure.

Turbines: pressure reduction (fluid expansion).

  • Pumps, compressors and circulators

    Turbines

    Pumps, compressors
    and circulators

    Turbines

    The kinetic energy of the rotor’s rotation is transferred to the fluid and converted into mechanical energy: the pressure increases.

    Pumps compress liquids, whereas compressor and circulator fluids are gaseous. For both pumps and compressors, the pressure differential between the fluid entering and leaving the system is high. In the case of circulators, on the other hand, the increase in pressure remains low, as their primary role is to generate fluid flow.

    Pressure rise varies with rotor speed. The higher the speed, the greater the available energy and the greater the fluid compression.

  • Pumps, compressors and circulators:

    Turbines

    Pumps, compressors
    and circulators:

    Turbines

    turbomachines_turbine_cryogenique_supraconductivite

    The compressed fluid expands, driving the shaft in rotation. This transfer of energy from the fluid to the rotor produces a mechanical torque that usually drives an alternator or pump.

    When a turbo-alternator and a motor-compressor are included in the same thermodynamic cycle, part of the energy recovered by the turbine alternator is used to power the electric motor driving the compressor rotor. This management of electrical energy results in a better energy ratio (cooling power/overall operating power).

    turbomachines_turbine_cryogenique_supraconductivite

Our technologies

Our technologies

ace-cube_produit_absolut-system_souligner-fontionnement
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Our advanced technologies (hydrodynamic gas bearings, high-efficiency centrifugal impellers) make our compressors, pumps, circulators and turbines highly reliable and efficient systems, even in the most demanding environments.

Absolut Cryo circulateur Tungsténe 3-Récupéré

Key Points

Over the years, our experts have been involved in numerous projects, such as the design of MELFI’s turbomachinery, now in operation on the ISS for 15 years, using non-contact gas bearing technology (120,000 rpm).

Technical datas

Technical datas

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Cryogenic circulators

ProductsTechnical Leaflets
CF100Available oon
CF200
CF8000Available soon
ProductsFlowFlow (L/s)SpeedRpm maxPower (W) Compression rate Technical Leaflets
CF100Low flow1 à 4Fast500001081,01Available soon
CF200Low Flow0,03 à 1Slow180001991,03
CF8000High Flow5 à 124Fast5000042001,05Available soon

Liquid pump

ProductsTechnical Leaflets
LN2 PumpAvailable soon
ProductsRpm maxPower (W)Compression rateTechnical Leaflets
LN2 Pump52501412,7Available soon

Your needs, your turbomachine

In addition to the compressors and circulators available, Absolut System designs and manufactures your custom turbomachine. Thanks to the advantages of flexibility offered by SMEs, we work closely with you on project management to meet all your needs.

Related product: Reverse
Turbo-Brayton

Cryogenic cooler based on an inverted Turbo-Brayton thermodynamic cycle: terrestrial and space applications.

Related Project: Cooling an optical laser with
high-purity helium

The entire laser system is being developed in collaboration between the STFC (Science and Technology Facilities Council) and the Hilase Center. Absolut System has developed high-reliability, high-performance cryogenic circulators with hydrodynamic gas bearings, enabling contamination-free movement of cold helium in the optical cryostat.

Related product: Reverse Turbo-Brayton

Cryogenic cooler based on an inverted Turbo-Brayton thermodynamic cycle: terrestrial and space applications.

Related Project: Cooling an optical laser with high-purity helium

The entire laser system is being developed in collaboration between the STFC (Science and Technology Facilities Council) and the Hilase Center. Absolut System has developed high-reliability, high-performance cryogenic circulators with hydrodynamic gas bearings, enabling contamination-free movement of cold helium in the optical cryostat.