Driving costs down
June 1st 2004

Matched pairs of ABB high efficiency motors and drives will reduce energy consumption at the new Coventry Hospital by over 1400MWh per year for the ventilation system in block A, when it comes fully into service in 2006. Similar savings are expected for the planned blocks Band C.

Ranging in size from 0.55kW to 45kW, the 230 drives and motors packages are being supplied on a just-in-time basis by ABB, being produced and delivered to meet the installation time table of Air Handling Systems, suppliers of the ventilation system.

Wes Campbell, senior project manager for Air Handling Systems says: Buying a combined motor and drive package makes sense because the two products are exactly matched to each other.

Using variable speed drives to control the flow of air and water in the HVAC system can save well over 50% of the energy, compared to using traditional control methods such as throttling valves and vanes. On a large site like Coventry Hospital, this can have a significant impact on running costs.

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