2009-03-31 - A new fan system powered and controlled by energy-efficient ABB motors and drives has reduced the annual energy bill of a Swedish hospital by $400,000 and reduced fan maintenance requirements by 90 percent.
By
ABB Communications
Ryhov Hospital in the city of Jönköping in central Sweden serves a population of 140,000 and employs 3,500 people. The hospital is one of the largest in the country outside the capital, Stockholm.
By replacing an aging and inefficient fan system with 30 new fans powered and controlled by ABB high-efficiency EFF1 motors and ACH550 standard drives, the hospital reduced the energy consumption of each fan by almost 30 percent, from 65.2 kilowatts (kW) to 46.4 kW.
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Ryhov Hospital, in Jönköping, Sweden, has reduced its energy costs by about $400,000 annually by replacing an aging and inefficient fan system with high efficiency ABB motors and ABB standard drives.
“The reduced energy consumption of one fan equates to a saving of $13,100 a year at today’s prices,” says Bengt Jönsson, chief engineer for the real estate management unit of the regional health administration. “This is a massive saving. Multiplied by 30 fans it works out at a total annual reduction in energy costs of about $400,000.”
Maintenance requirements have also been dramatically reduced.
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The system reduces energy costs by more than $13,000 per fan annually, and also features low maintenance and two year payback time.
“The new fan system requires about one-tenth the maintenance of the old one,” says Jönsson. “Not only do we benefit from significant energy savings and reduced environmental impact, we have the added bonus of much lower maintenance costs and a payback time of only two years.”
ABB EFF1 motors are rated in the highest efficiency category for motors sold in Europe.
They yield high energy savings, are exceptionally reliable, waste less energy as heat, and can operate at a much lower temperature at full load than low-efficiency models.
The award-winning ACH550 standard drive is the first dedicated AC drive for heating, ventilation and air conditioning (HVAC) applications and the only drive on the market to meet the new European standard for electromagnetic compatibility and limited harmonics.
More than 300,000 ACH550 HVAC drives have been sold worldwide. The drive is part of the ABB standard drives family, more than one million of which have been manufactured to date.
Click on the following link to download the new
ABB brochure on standard drives for HVAC applications. (PDF/676kB)