Michael Englebright, Danfoss Applications Engineering Manager, found out that by replacing analog timers with electronic controls the supermarket could save a lot of money. Today over 640 supermarkets benefit from the solution and a further 40 more are in the final stages of being completed.
“Coles Supermarkets had changed the trading hours, and I found out that although the trading times had been cut back, the analog lighting timers had not been reinstated. These findings were effectively put into a solution with lighting sensors and overrides switches”, Michael Englebright explains.
Half-light in Non-Trading Periods
Lighting accounts for approximately 15% of the total electricity consumed in a supermarket. Current arrangement in many stores is to have the lighting circuit set-up so that lights can go to a half lighting mode (2 circuits) in non-trading period’s i.e. simple On-Off or Dimming mode.
”The proposal here is to bring the lighting scheduling and controls into the Danfoss HVAC or refrigeration controller that are being connected to the network as part of the remote monitoring project” says Michael.
Both Epping and Rowville trade from 6:00am until midnight, so the opportunity existed to turn a number of lights off from midnight until 6:00am, even greater savings were achieved for shops that close earlier.
Thanks to the Danfoss total offering in both electronics and FDS (Field Delivered Services) Aztech sister company of Danfoss were able to execute the solution across the Coles estate nationally to reduce the electricity bills whilst the customers still get the perfect shopping lighting levels.