Danfoss Turbocor VTT: Oil Free Compressor with Capacity Range up to 350 tons/1200 kW

  • Turbocor VTT series  - Danfoss
  • The Biggest News in Turndown Just got Smaller

    Introducing the new VTT series of Danfoss Turbocor compressors, the pioneering of oil-free, variable speed, magnetic bearing technology. Based on the proven Danfoss Turbocor TT series compressor technology, VTT (Variable Twin Turbo) compressors feature IntraFlow™ technology and provide the highest full- and part-load efficiency in the industry as well as superior turndown. The VTT series also extends Danfoss’ existing compressor capacity range up to 350 tons/1200 kW.
    VTT runs on R134a.

    Exclusive IntraFlow™ Technology
    Innovative and patent-pending IntraFlow™ technology allows the VTT series of compressors to eliminate the cost and complexity of inlet guide vanes or variable geometry diffusers and, at the same time, simplifies the capacity control, extends the stable operating range, and improves compressor efficiency.

    In brief, IntraFlow™ directs a fraction of the flow from the volute exit to the inlet of the first-stage diffuser through a series of nozzles. This injection of flow into the first stage diffuser provides aerodynamic incidence control to give VTT compressors the largest stable operating range of any centrifugal compressor.

    • Highest full- and part-load efficiency in the industry
    • Superior turndown
    • Extended stable operating range
    • Eliminates the need for Inlet Guide Vanes or other types of mechanical diffusers
    • The new VTT compressors are designed to allow OEMs to meet the stricter chiller efficiency requirements expected in ASHRAE 90.1-2015 using either Path A or Path B
    Applications & Data
    Danfoss Turbocor VTT compressors are designed to meet the operational requirements of water-cooled or evaporative cooled chiller applications, and will have nominal capacity ranges from 200 to 350 Tons (700 to 1200 kW).  

    Due to the compressors’ unloading capabilities, the VTT series is ideal for buildings that operate 24/7, such as data centers and hospitals.

    The VTT Series will be available for voltage applications between 380 and 575 Volts, and will carry the ETL and CE PED marks.


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