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DANFOSS VLT® HVAC Drives Deliver Major Energy Savings

The Danfoss VLT® HVAC Drive is the global leader in the air conditioning market. It has been designed specifically for fan, pump and compressor applications. Power sizes range from 1.1kW to 1.4MW in a variety of IP rated enclosure styles.

Danfoss VLT® HVAC drives are compatible with most Building Management Systems, simplifying and reducing installation costs. This ensures control of the building services environment and facilitates simple updating of the system.

NHS Trust Project

In order to assist Brighton & Sussex University Hospitals Trust to reduce its energy consumption, Efficiency Direct Ltd of Shoreham by Sea in partnership with Danfoss Drives UK, specified and installed dedicated HVAC drives to hospital air handling equipment.

A trial area was equipped with Danfoss VLT® HVAC drives; which were connected to the hospitals’ Building Management System to respond to changes in outside air temperature, duct pressure and temperature. This provides the versatility needed for the challenging requirements of the environment found within a hospital.

The Trust has since ordered a further 88 units for its two major hospitals in Sussex. The installation has not only improved the hospitals internal environment in the areas served, but has resulted in a reduction in the electrical consumption in the plant room of more than 50%. This has been quantified as saving £48,000, 288 tonnes of CO2 emissions and 533,000 kWh of electricity per annum.

NHS Trust Energy Manager Dawn Moss said “The Danfoss drives are part of a series of Energy Reduction projects being undertaken. The drives have proved to be reliable, versatile and efficient, and the project has been extended across our estate.”

The energy usage figures recorded before, during and after HVAC Drives were fitted demonstrates the dramatic reduction in electrical consumption that has been achieved.

Belfast International Airport Project

The installation of dedicated Danfoss VLT® HVAC drives on 28 fans on air handling units in Belfast International Airport has resulted in considerable energy savings and improved air quality for 5 million passengers each year. The new climate control system has led to annual savings of £91,000 and the investment has paid for itself in less than one year.

During the summer the energy bill was down by more than £14,000 over a three month period. In cooler weather the savings are even greater, especially when the air handling units are under full automatic environmental control.

A reduction in fan speed of 20 percent is enough to save 1 million kWh every year, turning Belfast International Airport into a more environmentally friendly airport with a reduction in carbon emissions of more than 500 tonnes annually.

Email: drives@danfoss.com


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Arundel Jones Associates Ltd Registered in England and Wales No. 07334149
Hill Farm, Linton Hill, Maidstone, Kent ME 17 4AL
Tel : 01622 745333 email
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News Categories : HVAC drives
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