Ahlstrom Engine Filtration
Intern: Paul Jeffers
Southern Illinois University, Carbondale
Ahlstrom is a Finnish company, which has facilities in 20 countries and employs over
5,600 people. The Taylorville Engine Filtration facility produces high quality paper
media for air filters, oil filters and water filters. The intern was tasked with identifying
opportunities to reduce energy consumption at the facility.
The intern made the following energy efficiency recommendations:
• Install a heat exchange device, known as an economizer, on the package boiler
unit. The economizer can save energy by using hot flue gas to preheat boiler feed
water. This can increase the efficiency of the boiler by about 2.7 %. The
potential savings were estimated to be $16,600 a year in decreased natural gas
costs, with a payback period of 16 months.
• Shut off lights in the parking lot and loading docks during the day, combined with
shutting off lights in unused parts of the facility. This could save the company
$1,800 a year.
The economizer was installed in December of 2006. The actual cost of the unit plus
installation was $52,631. The calculated payback was 25.2 months.
From data collected from August 2006 to June 2007, the package boiler is operating with
an increased efficiency of 22% in steam production to gas used. This equals an annual
savings of $25,400 which fall right in line with the 25 month calculated payback.