Lighting Efficiency of Incandescent & CFL vs LED
December 30th, 2009 commentsLED lighting is becoming increasingly popular in the gas station c-store industry. This is not only due to the lower energy consumption of the LED lamps, but the new lighting also makes the beverages in the coolers more visually appealing!
OSRAM Opto Semiconductors recently released their findings from a study on the life-cycle assessment (LCA) of LED lamps. Here is a summary of their findings.
LED life-cycle assessment
Light Emitting Diodes are among the most energy-efficient light sources available on the market. LED lamps are already today more than five times more efficient than incandescent lamps and future technical achievements offer additional potential for the coming years.
At present, artificial lighting accounts for around 19% of global electricity consumption – that corresponds to 2.4% of worldwide primary energy consumption. Read the rest of this entry »
Operating Cost for Walk-in Coolers and Freezers
July 23rd, 2009 commentsBefore purchasing your walk-in, you may be wondering how much it will cost to operate your walk-in.
To give you a rough estimate of how much it cost to operate a walk-in cooler or freezer, using the national average of 11.89 cents per kilowatt, look at the chart below.
Cooler Average Cost per month Freezer Average Cost per month 6×6 $65.98 6×6 $227.72 6×8 $65.98 6×8 $227.72 8×8 $117.98 8×8 $227.72 8×10 $111.27 8×10 $347.24 8×12 $111.27 8×12 $347.24 10×10 $140.91 10×10 $347.24 10×12 $140.91 10×12 $406.38 Note: The above figures are estimates; your exact numbers may vary. *These numbers were figured using the $.0999 kilowatt hour cost. According to the Energy Information Administration this is the average cost in the United States for commercial electricity.
This chart was created using several assumptions that can affect your actual operating cost.
- The type of insulation in the walk-in.
- Efficiency of the refrigeration system.
- Inside and outside temperature of walk-in.
- Where the walk-in is located.
- The temperature and the weight of the product entering the walk-in.
- How often the door is opened.
- The age of the walk-in.
- Cost of electricity.
This is just to name a few. If you would like to be more accurate using your electric rate, follow the instructions below. Read the rest of this entry »