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You are replacing a 100 w light bulb in your home that operates, on average, 8 hours per day. You can select from the three
You are replacing a 100 w light bulb in your home that operates, on average, 8 hours per day. You can select from the three light bulbs shown in the table below. Note that each light bulb produces the same amount of visible light (lumens) and the cost of electricity is constant at $0.11/kw-hr. What is the total annual cost of each bulb? Defining the levelized cost of operation as the total annual cost divided by the annual energy usage, what is the levelized cost of operation for each bulb? Which bulb would you purchase and why? Type Incandescent CFL LED Cost/bulb Bulb power consumption Bulb lifetime MARR $1.00 100 W 2 year 7% 50 26 W 10 years 7% $6.75 18 W 25 years 7% You are replacing a 100 w light bulb in your home that operates, on average, 8 hours per day. You can select from the three light bulbs shown in the table below. Note that each light bulb produces the same amount of visible light (lumens) and the cost of electricity is constant at $0.11/kw-hr. What is the total annual cost of each bulb? Defining the levelized cost of operation as the total annual cost divided by the annual energy usage, what is the levelized cost of operation for each bulb? Which bulb would you purchase and why? Type Incandescent CFL LED Cost/bulb Bulb power consumption Bulb lifetime MARR $1.00 100 W 2 year 7% 50 26 W 10 years 7% $6.75 18 W 25 years 7%
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