Danfoss Turbocor® TG Series: Oil Free Compressors Using HF0-1234ze Refrigerant

  • Danfoss Turbocor TG310
  • Highly Energy Efficient and Environmentally Friendly Compressor

    The Danfoss Turbocor TG Series of centrifugal compressors delivers nominal capacities of 230 kW (65 Tons) up to 520kW (150 Tons) with all the benefits of oil-free operation. They operate with R1234ze refrigerant with a very low GWP which takes the environmental leadership while achieving the best energy performance levels.

    These variable speed oil-free compressors can be available for 380, 400, 460, and in some sizes 575 Volt applications and is intended for air- and water-cooled chiller systems. Unloading capability goes down to 65kW (18.5 Tons).

    HFO1234ze has a GWP (Global Warming Potential) value less than 1 and zero ODP (Ozone Depletion Potential).

    TG Series of oil-free compressors carries the CE PED mark.

    The new compressor models TG230, TG390, and TG520 are designed for standard temperature A/C applications

    • TG230 – Delivers a nominal capacity of 230kW (65 tons) at water-cooled conditions and 175kW (50 tons) at air-cooled conditions. The TG230 compressor is available for nominal mains input voltages of 400V, 460V, and 575V. 
    • TG390 – Intended for water-cooled chillers and delivers a nominal capacity of 390kW (110 tons). The TG390 is available for nominal mains input voltages of 380V, 400V, 460V, and 575V. 
    • TG520 – Intended for water-cooled chillers and delivers a nominal capacity of 520kW (150 Tons). The TG520 is available for nominal mains input voltages of 380V, 400V, and 460V.

    A new compressor model for medium temperature applications is also available.

    • TG230 MT – Available with the same range as the standard temperature version but with the capability to extend operation down to evaporating temperatures of -10 degrees C (+14 degrees F).
    HF01234ze Refrigerant:
    • Reduces direct CO2 emissions by 99.6% 
    • Atmospheric life of 18 days compared to 13 years for a compressor R134a (source Honeywell)
    • F Gas ready – HFOs are not considered as fluorinated greenhouse gases
    • HFO-1234ze, is a safe and energy-efficient alternative to traditional refrigerants for use in water chiller applications.

    Innovative Technology:

    Oil-free compressor operation is something the industry has worked decades to achieve. This oil-free design eliminates the efficiency losses due to the use of oil circulating in the compressor. It also suppresses the need for all the accessories for the oil management: oil heaters, oil pumps, oil separators, oil filters, etc., plus oil disposal.

    High Part-Load Efficiency:

    Danfoss Turbocor® oil-free compressor is a two-staged hermetic centrifugal compressor with a built-in variable frequency drive. It delivers high efficiency at full load and extraordinarily high efficiency at part-load conditions.

    Redefines Soft-Start:

    The TG Series of compressors redefines soft-start with only drawing 2 amps compared to 700-800 amps required by conventional fixed-speed compressors.

    Extremely Lightweight and Compact:

    TG310 compressor weighs only 132 kg, approximately 1/8th the weight of conventional compressors of equivalent 80 ton compressor while only requiring about half the space.


  • Oil free compressors - Danfoss Turbocor TG 310
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