October 8, 2008
Here are some great tips by the folks at Go-Green.com to help your business protect the environment as well as saving a few bucks. We think adding a reflective window film is a great start!
Exact payback time depends on energy costs and other factors. For example, payback time for heating and cooling systems depend on local climate. However, payback time for the following energy-saving actions are approximately 1-3 years.
Occupancy sensors are more reliable than expecting employees to turn off lights. Sensors in restrooms and closets save up to 60% of energy used with a manual switch. Timers or photo-sensors help employees to use more daylight. Photo-sensors also adjust for natural light with dimming.
Delamping, (taking out bulbs that are not needed), saves more energy and money in the long term than replacing fixtures. Many older office buildings have too many lights due to outdated codes and the new trend of widespread computer use. Excess lighting glares on computer screens and wastes energy. Payback time for removing two to eight-foot fluorescent lamps, lamp holders, and ballasts is less than a year.
Install CFL pendants and wall sconces for hallway and corridors. These areas don’t need as much lighting as a computer workspace to be safe and attractive.
LIGHTING: Quick Facts
- Compact fluorescents are 75% more efficient than incandescent and last ten times longer
- T-8 fluorescents are more efficient than T-12s,
- Super T8s are more efficient than standard T8s
- T-5 fluorescents (used in Europe) are more efficient than T-8s
- Electronic ballasts (for fluorescent and HID lamps) are more efficient than magnetic ballasts
- Electronic ballasts don’t contain toxic PCB’s
- Occupancy sensors save up to 60% of energy used with a manual switch
- LEDs used in an exit sign can save $50 per year
Change to LED exit signs. Save $50 per year by changing exit sign lights to LEDs (light emitting diode). LEDs also last longer than incandescent or fluorescent bulbs (50,000 – 100,000 hrs).
Space Heating and Cooling
HVAC systems tend to be oversized and inefficient. A Package Terminal Air Conditioner (PTAC) heats and cools smalls spaces efficiently. Payback time depends on local factors like climate, but a PTAC pays for itself in approximately three years. Consider other investments like reflective window film or variable speed drive systems for HVAC fans that control speed for energy savings.
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