You are considering replacing a 75 W incandescent lamp that costs $1.75/lamp with a compact fluorescent lamp. The incandescent lamp outputs 1190 lumens and has a rated life of 750 hr. It is anticipated that the lamp will operate 8 hr per day, 350 days per year.
a. Identify a ballasted, one-piece, screw-in, compact fluorescent lamp that can replace the incandescent lamp without reducing light output. Base the comparison on mean lumen output of the compact fluorescent lamp. A slight increase in output is acceptable.
b. Approximate the cost of each type of lamp over a 10-year period, assuming use and lamp costs remain constant. Assume the cost of fluorescent lamp is $5.00 per lamp.