Incandescent CFL LED Watts 60 14 7 kW 0.06 0.014 7 Hours 25000 25000 0.007 Quantity 20 3 25000 Cost of buying 10 71 Kw used 1500 350 175 kWh 0.15 0.15 0.15 Cost of electricity 225 52.5 26.25 Total Cost 235 58.5 33.25 Average 0.0094 0.00234 0.00133 Conclusion: Average Cost per hour for Incandescent light is $0.0094, for CFL is 0.00234 and for LED is $0.00133.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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How did you get the average cost for this question? 

the question is from (Engineering economics analysis, p39)

Incandescent CFL
LED
Watts
60
14
7
kW
0.06
0.014
7
Hours
25000
25000
0.007
Quantity
20
3
25000
Cost of buying
10
71
Kw used
1500
350
175
kWh
0.15
0.15
0.15
Cost of electricity 225
52.5
26.25
Total Cost
235
58.5
33.25
Average
0.0094
0.00234 0.00133
Conclusion:
Average Cost per hour for Incandescent light is $0.0094, for CFL is
0.00234 and for LED is $0.00133.
Transcribed Image Text:Incandescent CFL LED Watts 60 14 7 kW 0.06 0.014 7 Hours 25000 25000 0.007 Quantity 20 3 25000 Cost of buying 10 71 Kw used 1500 350 175 kWh 0.15 0.15 0.15 Cost of electricity 225 52.5 26.25 Total Cost 235 58.5 33.25 Average 0.0094 0.00234 0.00133 Conclusion: Average Cost per hour for Incandescent light is $0.0094, for CFL is 0.00234 and for LED is $0.00133.
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