Precision cooling with inverter technology

Application description

In many industrial processes the machinery or processes generate heat which requires cooling, to protect the equipment and/or to ensure that the product being manufactured is of the required quality. The process cooling unit is used to cool, to extract humidity or regulate the temperature of the manufacturing process.

A good example of this need for cooling during manufacturing is found in the plastics industry, where injection machinery heats the plastic polymer to enable it to be moulded or extruded. In the blow moulding of plastic films, the temperature control of the extruded film is important, since this affects the quality and thickness of the film. 

Cooling equipment can be of different types, depending on whether air or liquid is the cooling medium which needs precise temperature control. The cooling equipment often needs to be very flexible in order to allow industrial machinery to use the same cooling equipment in different processes. For example, a plastic film blow-moulding machine can produce thin films; then the temperature set point needs to be relatively high (typically 20°C). The same machine can also produce thicker plastic films, but then the temperature set point needs to be lower.

In addition to the need to be able to maintain different temperature set points during a manufacturing process, process coolers have to be able to maintain a stable temperature at the set point despite variation in the ambient temperature.

Why choose Danfoss variable speed compressors for process cooling?
By using the Danfoss inverter compressor – a reliable compressor combined with a prequalified drive – the challenges involved in manufacturing applications like the above can be met.

Variable speed solutions adapt very quickly to cooling demand and keep the process at a precise set point (±0.2°C) despite varying ambient temperatures. If process parameters need to be changed, smooth and very precise temperature control is possible, as shown below in a comparison between close control using inverter compressors and using traditional on-off compressor technology.

In addition to precision temperature control, variable speed compressor solutions will be more energy efficient compared to traditional on-off compressor technology, especially when running in part-load conditions.

What are the benefits for your customers when they choose Danfoss inverter compressors?

  • The compressors can maintain stable and precise temperatures, improving process and equipment reliability 
  • Down time costs are reduced 
  • Part-load operation increases the overall efficiency of the system 
  • Start-up current requirement is low
  • There are significant energy savings

The most important benefits for customers

  • Precise temperature control achievable within ±0.2°C , improving processes, quality of products and equipment lifetime

Additional benefits

  • Innovation and development of new technologies made possible.
  • Increased market share achievable through more innovative products 
  • Greater ability to expand and grow.

 

Products

  • Turbocor® - TG - Danfoss
    Turbocor® - TG

    Danfoss Turbocor® model TG oil free compressors are available in four different models ranging from 40 tons to 150 tons / 140 kW to 540kW utilizing ultra-low GWP HFO1234ze.

  • Turbocor® - TT - Danfoss
    Turbocor® - TT

    Danfoss Turbocor® model TT oil free compressors are available in four different models ranging from 60 tons to 200 tons / 200 to 700 kW utilizing R134a or non-flammable, low GWP R513A. 

  • Turbocor® - VTT - Danfoss
    Turbocor® - VTT

    Danfoss Turbocor® model VTT oil free compressor is available with a capacity up to 400 tons / 1430 kW using R134a.  This compressor is designed for water and evaporative cooled chiller applications.

  • 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.

  • 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.

Case studies

  • Danfoss Turbocor® TG
    Oil-free centrifugal compressors: from R134a to R1234ze

    The Danfoss Turbocor® TG310 compressor is the first 60-90TR compressor introduced with R1234ze refrigerant, a refrigerant with an extremely low global warming potential.

  • data center with inverter danfoss
    Data center cooling: efficient and reliable with inverter

    Example of data center cooling featuring inverter technology that reaches low PUE, saves energy and costs and secures data process.

  • Data center cooling danfoss
    Data center cooling

    A world leading company in wireless technologies opt for three 1,400-ton chillers powered by 21 Danfoss Turbocor™ compressors to improve efficiency and lower costs at data center.

  • hotel with chiller danfoss
    Hotel with chiller retrofit

    Inverter chiller retrofit brings huge savings in a five star hotel installation, operating and maintenance costs, with compact Danfoss inverter oil–free compressor Turbocor®.

  • process chillers danfoss
    Process chillers

    Variable speed with Danfoss Turbocor Oil free centrifugal compressor guarantees reliable process cooling and efficient comfort cooling in factory

  • Danfoss research laboratories
    Research laboratories

    Renovation of Key Laboratory in Shanghai illustrates the benefits of temperature control and energy savings in critical applications with inverter technologies

Contact us

For further information, please contact us.