How Federated uses fans to further sustainability

A Canadian retail co-op has embraced sustainability to reduce its costs and return the savings to its members and customers.

By ·

With the cost of heating the Saskatoon warehouse going through the roof—literally—Federated Co-operatives was interested in testing whether thermal destratification in its warehouses would result in significant heat cost reductions and the reduction of the amount of natural gas needed to heat its facilities. Destratification is what happens when layers of warm air that form in one part of a facility mix with layers of cooler air in another part of a facility to produce a constant temperature.

According to Trevor Carlson, environmental and technical services manager, Federated believed a fair amount of heat was being trapped or lost through the ceiling. The difference between the temperature of the air at the floor level and the underside of the roof deck in some distribution centers can be up to 30 degrees, depending on the time of year. If that warm air could be brought down to circulate through the building, then Federated could reduce the rate at which its buildings were shedding heat through the roof.

To put the theory to the test, Federated installed five 24-foot large-diameter, low-speed fans (Big Ass Fans) in the 80,000-square-foot loading dock area back in 2007. The retail co-operative then began to measure its heat index in the pilot area, a measurement that relates the day’s temperature to the energy demands of the heating system. The index is expressed as Btu/ft2/degree day. Before the installation of the fans, the heat index was 4.49 Btu/ft2/degree day. By the end of 2008, the heat index had been reduced by 10% to 3.61 Btu/ft2/F.

“We believe we saved $19,800 in the first year in natural gas consumption as a result of the fans,” says Carlson.

Since then, Federated has expanded the use of fans to other facilities, says Philip Thiemann, warehouse operations director. In Winnipeg, for instance, the co-op installed a fan in a temperature controlled dock area where hot air was building up in the hot summer months around the dock doors.

“We had to turn the thermostats down, which put a constant demand on the refrigeration units,” he says. “The air movement from the fans allows the air to mix and even out the temperatures.” In the process, Thiemann adds, workers have found that the new fans keep the ambient temperature areas more comfortable on hot days for less money.

“The big fans use about 3 amps an hour compared to 180 amps for the fans we had been using in the summer,” he says. “The electrical savings in the summer are greater than the gas savings in the winter and the workers are more comfortable.”

click here to download the PDF article
click here to download PDF article


About the Author

Bob Trebilcock
Bob Trebilcock, editorial director, has covered materials handling, technology, logistics and supply chain topics for nearly 30 years. In addition to Supply Chain Management Review, he is also Executive Editor of Modern Materials Handling. A graduate of Bowling Green State University, Trebilcock lives in Keene, NH. He can be reached at 603-357-0484.

Subscribe to Logistics Management Magazine!

Subscribe today. It's FREE!
Get timely insider information that you can use to better manage your entire logistics operation.
Start your FREE subscription today!

Article Topics

All Topics
Latest Whitepaper
Identify Cost Savings with Real-Time Visibility
To offset the impact of late shipments, unreported delays and detention, shippers are increasingly requiring 100 percent visibility into the location and status of their freight.
Download Today!
From the August 2017 Logistics Management Magazine Issue
Which carriers, third-party logistics providers, and North American ports have crossed the service excellence finish line ahead of their competitors? Our readers have cast their votes, and now it’s time to introduce this year’s winners of the coveted Quest for Quality Awards.
BMW Takes the Inland Road to Efficiency
Global Logistics: No Shortcuts to Security
View More From this Issue
Subscribe to Our Email Newsletter
Sign up today to receive our FREE, weekly email newsletter!
Latest Webcast
Getting the most out of your 3PL relationship
Join Evan Armstrong, president of Armstrong & Associates, as he explains how creating a balanced portfolio of "Top 50" global and domestic partners can maximize efficiency and mitigate risk.
Register Today!
EDITORS' PICKS
34th Annual Quest for Quality Awards: Winners Revealed
Which carriers, third-party logistics providers, and North American ports have crossed the service...
2017 Top 50 3PLs: Investment and Consolidation Maintain Traction
The trend set over the past few years for mergers and acquisitions has hardly subsided, and a fresh...

2017 Salary Survey: Fresh Voices Express Optimism
Our “33rd Annual Salary Survey” reflects more diversity entering the logistics management...
LM Exclusive: Major Modes Join E-commerce Mix
While last mile carriers receive much of the attention, the traditional modal heavyweights are in...