Edison’s invention may stay around a little longer now that GE has begun work on creating a high efficiency incandescent light bulb that will be as energy efficient as a compact fluorescent lamp (CFL) and deliver high-quality light output.
Over the last four years GE has invested over $200 million in the development of their high efficiency incandescent (HEI). GE has set a target for these new lamps at initial production to be nearly twice as efficient as current incandescents and deliver 30 Lumens per watt. Their later goal is for the HEI bulb to be four times as efficient and comparable to CFL bulbs.
In addition to desirable light quality, GE says the new HEI lamp will have instant-on convenience and be priced less than current CFLs. Don’t worry about waiting for the CFLs you just bought to burn out; these new HEI lamps won’t be on the market until 2010.
how to calculated lamp lifetime for incandescent lamp?
thanks
According to GE, Incandescent lamps are very sensitive to voltage. A lamp rated at 120 volts, for example, would only last 1/2 of rated life if subjected to 125 volts, or 1/3 of rating if the average voltage applied were 130 volts.
The first thing you should do is to keep track of how long the worst offenders are lasting. How long are your lamps burning? Be sure not to count the time that they are turned off. Typical incandescent bulbs are rated at 750-1000 hours, meaning approximately 2-1/2 changes per year.
This is a wonderful read. It has me thinking, thank you.