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For safe and efficient data centre cooling

Cooling of IT equipment in data centres is an increasing challenge for operators and design engineers. Power management is the major challenge, with energy consumption and heat loads increasing in step with the server density. Meeting these challenges is essential for ensuring the safety and availability of the data. 

Other important factors are:

  • Cost optimization: cooling can be up to 50% of the overall energy cost in a data centre 
  • Precise humidity control and better control of static electricity
  • Minimum start-up current for situations where the power grid is sensitive to load, reduced downtime, and increased lifetime of the overall system

Why choose our variable speed compressors for process cooling?
The first major benefit is the overall energy saving. 

Other benefits include:

  • Flexibility with combined compressor and free cooling 
  • Quick and smooth adaptation to varying loads; Danfoss inverter technology modulates cooling between 25 and 100%, saving substantial amounts of energy, especially in part-load operation. Experience shows that savings of up to 50% can be achieved in energy consumption. This significantly reduces the PUE values (ratio of power supplied to the data centre divided by power consumed by the IT infrastructure) (see Figure 1).

Figure 1: Potential energy saving in a packaged unit equipped with a single inverter compressor compared with a unit equipped with a fixed-speed compressor.

  • Actual energy efficiency improvements will vary depending on the data centre design and the configuration of the cooling systems. However, recent experience has shown that installing a VSH variable speed compressor solution into a unit previously using traditional On-Off compressors can reduce the annual energy consumption of the cooling unit by as much as 50%. Danfoss inverter scroll compressors are the most energy-efficient solutions available on the market today.
  • Stable and precise temperature control, with very consistent and stepless adaptation to required cooling load. Whatever the variation in ambient temperature or outside temperature, the system can maintain a set point temperature to within ±0.2°C thanks to the capacity modulation system (see below figures).
  • Reduced noise under partial load conditions facilitates the integration of the unit in the surrounding.
  • Reduced start-up current is an additional benefit with variable speed technologies, since the compressor rarely needs to start at full load, and since the Danfoss inverter has a very soft start with very low in-rush current. This benefit solves the problems that arise in areas where electric power is unstable, avoiding a peak in demand.

Products

  • if (isSmallPicture) { Danfoss VRJ inverter scroll compressor } else if (isBigColumns) { Danfoss VRJ inverter scroll compressor } else { Danfoss VRJ inverter scroll compressor }
    Inverter scrolls - VRJ

    Danfoss inverter scroll compressor solutions for commercial air conditioning and process-cooling applications. R410A, single units. VSH: first-generation commercial inverter scroll compressors with frequency converter CDS302. VZH: second-generation commercial inverter scroll compressors with frequency converter CDS303. VRJ: first high-tier residential inverter scroll compressors with frequency converter CDS801.

  • if (isSmallPicture) { Danfoss VSH inverter scroll compressor } else if (isBigColumns) { Danfoss VSH inverter scroll compressor } else { Danfoss VSH inverter scroll compressor }
    Inverter scrolls - VSH

    Danfoss inverter scroll compressor solutions for commercial air conditioning and process-cooling applications. R410A, single units. VSH: first-generation commercial inverter scroll compressors with frequency converter CDS302. VZH: second-generation commercial inverter scroll compressors with frequency converter CDS303. VRJ: first high-tier residential inverter scroll compressors with frequency converter CDS801.

  • if (isSmallPicture) { Inverter scrolls - VZH - Danfoss } else if (isBigColumns) { Inverter scrolls - VZH - Danfoss } else { Inverter scrolls - VZH - Danfoss }
    Inverter scrolls - VZH

    Danfoss inverter scroll compressor VZH offers effectiveness and reliability. Over 30% energy savings is possible in rooftops, chillers, close controls etc.

  • if (isSmallPicture) { Reciprocating inverter -  VTZ - Danfoss } else if (isBigColumns) { Reciprocating inverter -  VTZ - Danfoss } else { Reciprocating inverter -  VTZ - Danfoss }
    Reciprocating inverter - VTZ

    Danfoss reciprocating inverter compressors avoid oversized and short cycling systems. The compressor automatically adapts to the current load. By combining an efficient Danfoss Maneurop® reciprocating compressor with a Danfoss Drive, the company provides an innovative and intelligent package that utilizes variable-speed technology to ensure superior efficiency across the entire operating range for precision cooling.

  • if (isSmallPicture) { Turbocor® - TG - Danfoss } else if (isBigColumns) { Turbocor® - TG - Danfoss } else { Turbocor® - TG - Danfoss }
    Turbocor® - TGS

    Danfoss Turbocor model TGS oil free compressors are available in 5 different models ranging from 40 tons to 150 / 140 kW to 540 kW utilizing ultra-low GWP R1234ze or R515B.

Case studies

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