Refrigeration, air conditioning, pump, pump control, glycol supply, leak protection, flow compensation

Enhance system performance via pump optimization

In refrigeration and air conditioning applications, you can enhance system performance significantly by optimizing pumping operations. With multiple pump-dedicated control features and intelligent protection capability, Danfoss AC drives optimize production and protect the drive, the motor and the equipment in the system. They also ensure optimized liquid supply in the event of leakage or a broken pipe.

Continuous water or glycol supply can be assured in the event of leakage or a broken pipe. For example, overload is prevented by reducing drive speed and supply is secured at lower flow.

Leak protection

Dry Pump Protection and End of Curve features, which are integrated into Danfoss drives, relate to situations where the pump runs without creating the desired pressure – for example, when a pipe leaks. In this situation, the drive sets off an alarm, shuts off the pump, or performs another pre-programmed action.

You can gain significant energy savings and reduce installation costs thanks to flow compensation in both fan and pump systems. A pressure sensor mounted close to the fan or pump provides a reference enabling pressure to be kept constant at the discharge end of the system. The drive constantly adjusts the pressure reference to follow the system curve.

An operating pump will normally consume more power the faster it runs according to a curve determined by the pump and application design. The No/low flow feature detects situations where the pump is running fast but is not fully loaded. This could indicate that water circulation has stopped, the pump has run dry, or a pipe is leaking. Continuous liquid supply can be assured in the event of leakage or a broken pipe. For example, overload is prevented by reducing drive speed – and supply is secured at lower flow.

Achieve extra energy savings

Automatic Energy Optimization (AEO) provides additional energy savings of up to 5%. This feature matches the input current to the actual motor speed and load, and draws only the amount of power necessary for motor excitation and operation with this load. This avoids additional thermal losses in the motor.

With efficiency ratings up to 99% and a true power factor greater than 0.9, Danfoss AC drives are distinctly better than comparable devices. Losses for chokes and filters are already accounted for in the rating. This reduces not only direct energy costs for the drive itself, but also the costs for refrigeration or the removal of additional heat.

World’s greenest hotel uses 60% less energy

Crowne Plaza Copenhagen Towers hotel optimizes energy efficiency and cost effectiveness with VLT® HVAC Drive.

Products

  • Enhanced VLT® HVAC Drive FC 102
    VLT® HVAC Drive FC 102

    This tough and savvy FC102 drive enhances pump and fan applications in building management systems, and runs outdoors in most climates.

  • VLT® Refrigeration Drive FC 103
    VLT® Refrigeration Drive FC 103

    FC103 is dedicated to controlling compressors, pumps and fans for significant energy savings in refrigeration plants.

  • VACON® 100 FLOW
    VACON® 100 FLOW

    Dedicated functionality that improves flow control and saves energy in industrial pump and fan applications.

  • VLT® AQUA Drive FC 202
    VLT® AQUA Drive FC 202

    FC202 drives and controls all types of pumps and comes equipped with a cascade controller.

  • VLT® Soft Start Controller MCD 100
    VLT® Soft Start Controller MCD 100

    An extremely cost-effective and compact soft starter that provides basic soft start and stop functionality and easy DIN rail mounting.

Case studies

  • Cool tech for ice hockey ensures perfect match conditions
    Cool tech for ice hockey ensures perfect match conditions

    When talking about ice hockey arenas, whether you are a player or a spectator, you’re always on the winning team with Danfoss.

  • Equinix server rooms – Totally reliable air conditioning
    Equinix server rooms – Totally reliable air conditioning

    Equinix connects the world’s leading businesses to their customers, employees and partners inside the most interconnected data centers.

  • World’s greenest hotel uses 60% less electricity
    World’s greenest hotel uses 60% less electricity

    VLT® HVAC Drive helps Crowne Plaza Copenhagen Towers hotel optimize energy efficiency and cost effectiveness.

  • Danfoss and Inertech change future of data center cooling
    Danfoss and Inertech change future of data center cooling

    New solution enables expansion without compromising security, consumes less energy and water, and costs less than traditional chiller plant.

  • 20% lower electricity costs for Olympia Sports and Event Centre Innsbruck
    20% lower electricity costs for Olympia Sports and Event Centre Innsbruck

    VLT® HVAC Drives guarantee energy-efficient operation of fans, centrifugal pumps and compressors at the bobsleigh, luge and skeleton track.

  • 85% startup energy reduction for Reindl Kältetechnik
    85% startup energy reduction for Reindl Kältetechnik

    VLT® Refrigeration Drive provides optimal control of the dehumidifier in the hay drying process.

Contact us

For further information please contact us