How many LEDs must be combined to give a total of 1.6 W of visible light output.

Question

A faculty administration wants to change all fluorescent lights in rooms, labs, and classrooms. There are 250 lambs. A regular bulb is 5 TL and a LED bulb is 45 TL. A regular bulb consumes 40 Watts electricity whereas a LED bulb consumes 6 Watts. If electricity price is 0.80 TL per kilowatt-hour, how many days later will LED bulbs be more economical. Assume average working time (of all bulbs) is 6 hours. Note that the time for average life of the bulbs is 3 years.

Answer 1

Question

Chapter 11, Problem 5P

To determine

To find: How many LEDs must be combined to give a total of 1.6 W of visible light output.

To determine

To find: The total power required to run LED light source.

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