Item ID: 141
Photoluminescent Exit Signs
Emergency Exit Signs: Photoluminescent vs. Fluorescent Illuminated
Depend on radiation to make them glow and draw NO power. These materials are widely accepted but not in all states, including Oregon, Utah and California.
Photoluminescent exit signs have been around for many years, and their chemical make-up and useful life expectancies have evolved during this time. The federal government encourages their use for federal facilities through the energy-efficient purchasing program of the Federal Energy Management Program.
The signs need to have at least 5 footcandles of ambient light on them to keep them charged; it is not cost-effective to light them separately. The ENERGY STAR Program determined that an exit sign does not require the inclusion of an integral light source.
Photoluminescent material is expected to save about $100 in energy costs alone over the life of a sign. While this material may not be suitable for all locations, the small savings that each photoluminescent exit sign provides will add up to notable energy savings over time.
Energy Savings: 99%
Energy Savings Rating:
Not rated. What's this?
|1||Concept not validated||Claims of energy savings may not be credible due to lack of documentation or validation by unbiased experts.|
|2||Concept validated:||An unbiased expert has validated efficiency concepts through technical review and calculations based on engineering principles.|
|3||Limited assessment||An unbiased expert has measured technology characteristics and factors of energy use through one or more tests in typical applications with a clear baseline. |
|4||Extensive assessment||Additional testing in relevant applications and environments has increased knowledge of performance across a broad range of products, applications, and system conditions. |
|5||Comprehensive analysis||Results of lab and field tests have been used to develop methods for reliable prediction of performance across the range of intended applications.|
|6||Approved measure||Protocols for technology application are established and approved.|