A proposed re-lamping project includes 200, 2 lamp fixtures. Theexisting lamps are standard 40 W fluorescent bulbs with a lifespanof 20,000 hours that cost $1.25 each. The proposed replacementlamps would be high efficiency devices that give the same lightoutput for only 34 W input with a life of 22,000 hours. These lampscost $2.50 each. The fixtures are on 250 days for 12 hours a dayduring a year. Electricity costs are 0.12 $/kWh and 180 $/kW-yearfor energy and demand respectively.
a)Compute the annual energy savings (kWh)
b) compute the power demand reduction in kW per year
