Variable-speed drives in hospitals
ABB’s guide to using variable-speed drives and motors in hospitals and healthcare centres explains how using VSDs (variable-speed drives) to control fans and pumps in HVAC systems increases the efficiency of a system by adjusting the motor speed to the correct operating point.
For example, applying a VSD to a 75 kW motor in continuous duty can save nearly £15 000 a year on a single application.
Investing in energy-efficient VSDs and high-efficiency electric motors to control HVAC systems can achieve a 20 to 60% reduction in energy use.
The guide also explains why it can be effective to replace old VSDs before they fail.
For more information on this story, click here: March 2015, 152
