London Hotel selects Vacon variable-speed drives to save energy
Vacon variable-speed drives have been installed to replaced fixed-speed starters on pumps in the 4-star London Hilton Metropole Hotel in Edgware Road. They have been installed to control pumps on the chilled-water and LTHW systems. All the drives for this project were installed by Building Technology Systems and supplied by Vacon technical partner Park Electrical Services of Wrexham.
The overall project used 26 NXL drives with ratings from 5.5 to 30 kW and two NXS drives rated at 45 kW.
It is now possible to match the speed of the pumps to the instantaneous demand on the systems. Pumps will run at reduced speed almost all the time, saving large amounts of energy.
These drives are compact and have PID control facilities as standard. They also have integrated EMC filters, so they can be installed in any convenient location without the need for additional components. They have an IP54 rating, so they do not require enclosures.
A start-up wizard automatically determines the best operating parameters for the application.
The drives are linked to the hotel’s BMS, and pressure sensors have been added to some of the cold-water and LTHW circuits.
Another recent major project for Vacon is The Shard in London, with over 200 drives.
