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
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }VACON® 100 FLOW
Dedicated functionality that improves flow control and saves energy in industrial pump and fan applications.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }VLT® Compact Starter MCD 201 and MCD 202
Two families of soft starters that provide a total motor starting solution for motors up to 110 kW.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }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.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }VLT® Soft Starter MCD 500
The VLT® MCD 500 has reached the Limited phase of its lifecycle and is no longer in active production. Danfoss offers an extensive portfolio for soft starting and stopping of three-phase asynchronous motors and will help you select the optimal replacement drive for your application.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }VLT® AQUA Drive FC 202
Maximum energy efficiency for both water /wastewater and Industrial pump/fan applications
Case studies
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }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.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }World’s greenest hotel uses 60% less electricity
VLT® HVAC Drive helps Crowne Plaza Copenhagen Towers hotel optimize energy efficiency and cost effectiveness.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }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.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }85% startup energy reduction for Reindl Kältetechnik
VLT® Refrigeration Drive provides optimal control of the dehumidifier in the hay drying process.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }Annual energy savings of 800,000 kWh for Aarhus Hospital
VLT® Drives control the speed of heat pumps and chillers in the new cooling plant to optimize performance and annually save 800,000 kWh of energy.
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if (isSmallPicture) { ; } else if (isBigColumns) { } else { }Superior harmonic performance for Moser Baer
VLT® Drives provide optimized harmonic performance and significant average energy savings of over 30% on each air-handling unit.