Two major manufacturers are quoted in the Federal Register Vol. 79, No. 106, “Energy Conservation Program: Energy Conservation Standards for Walk-in Coolers and Freezers” discussing air curtains and their impact on walk-in cooler efficiency. The first commented that one of the largest factors to energy waste is the amount of time the door is open. They continue by stating that a cooler door may be open over 200 times a day. The second source also supports these claims. They comment that “air curtains may save almost as much energy as freezer panels with 5-inches of insulation” (32071-2).
The Department of Energy agrees with both companies – air infiltration when walk-in cooler doors are open adds to the heat load, lessening the unit’s efficiency. Air curtains can be used to reduce this infiltration according to the DOE.
A study was also performed at an Arby’s Franchise to test the effect an air curtain could have when installed above a walk-in cooler door. The results were a 27% reduction in compressor run-time and equipment wear-and-tear. This translates into nearly 100 fewer operating hours per year for an estimated annual savings of $447.
Below are Berner’s recommended models for walk-in cooler applications.
Contact a Berner Sales Representative today for more information.
For door heights to 7' (insect control). EPH Listed to ANSI/NSF-37. Low profile air curtain with white powder-coated cabinet. Suitable for Outdoor Use.
For door heights to 8' (environmental separation) and 7' (insect control). Low profile air curtain with white or black powder-coated cabinet.