Danfoss, a leading manufacturer of high-efficiency electronic and mechanical components and controls for air-conditioning, heating, refrigeration and motion systems, announced recently that Smardt Chiller Group Inc. is the winner of the third annual EnVisioneer of the Year award competition. Danfoss made the announcement at the Alliance to Save Energy’s 2012 Energy Efficiency Global Forum (EE Global) in Orlando, Fla., where they also addressed variable-speed technology as a solution to today’s energy efficiency challenges.
Smardt, the world’s largest manufacturer of oil-free centrifugal chillers headquartered in Montreal, Can., installed three 560-ton water-cooled chillers integrated with Kiltech controls at the Goodyear, Ariz., manufacturing facility of Sub-Zero, manufacturer of high-end refrigeration equipment. The chiller plant provides chilled water for the entire 452,000-square-foot facility and includes six variable-speed water pumps and three cooling towers.
Each Smardt chiller is equipped with four Danfoss Turbocor variable-speed oil-free compressors. The unique chiller plant control package uses a custom-made algorithm that models the energy consumption of the chillers and associated devices, optimizing their sequence of operation and delivering a total plant performance equal to or better than 0.5 kW per ton of cooling load.
The use of Smardt and Danfoss Turbocor oil-free technology associated with all-variable speed plant optimization control results in a chiller plant that is 61 percent more efficient than a plant that uses oil-lubricated screw chillers. For Sub-Zero, the chiller plant represents annual savings of 3,033,280 kWh, or approximately $371,700. Less energy consumption means the Sub-Zero chiller plant also reduced its annual carbon dioxide emissions by 3,697,568 pounds when compared to a conventional chiller plant.
“It’s always exciting for us to recognize a Danfoss customer that has incorporated our products in solutions that achieve significant energy savings while reducing a company’s carbon footprint,” said John Galyen, president of Danfoss North America. “The results of the Smardt solution underscore the benefits of oil-free compressor technology even as they demonstrate the positive impact that existing technology continues to have in the marketplace today.”
To recognize Smardt’s achievement, Galyen presented Richard Taft, general manager, North America at Smardt, Inc., with the award at an EE Global press conference.
Launched in 2010, the EnVisioneer of the Year award competition recognizes North American end users, building owners and original equipment manufacturers (OEMs) that have introduced a new product, opened a new facility or invested in a building or system upgrade in the past 18 months using Danfoss products or solutions to realize significant energy and/or environmental savings.
Technologies for Energy Efficiency
After the award presentation, Galyen participated in one of EE Global’s executive dialogue sessions, “Leveraging Technologies to Increase Energy Efficiency.” During the discussion, Galyen explained how current technologies like variable-speed air conditioning -- as showcased by Smardt’s award-winning installation -- address the growing U.S. energy demand and can positively impact homeowners, building owners and utility companies.
“U.S. energy demand is expected to increase 31 percent by 2035,” commented Galyen. “Yet, a variable-speed air-conditioning system can boost energy savings by nearly 50 percent. To put that into perspective, a one-year shipment of 20-SEER variable-speed air-conditioning units can save $658 million dollars. We would be more comfortable and utility companies would avoid the need to build additional power plants.”
“We need to leverage these existing technologies that have the capability to offset the increase in demand, improve energy efficiency and reduce the impact on the environment and society by foregoing the construction of new power plants to meet growing demand. We need to work together to accelerate deployment and meet tomorrow’s challenges today.”