A 25-W compact fluorescent lightbulb (CFL) produces the light equivalent of a 100-W incandescent bulb. The population of North A

Question

3 years ago

14

A 25-W compact fluorescent lightbulb (CFL) produces the light equivalent of a 100-W incandescent bulb. The population of North A

merica is estimated to be about 305 million. Estimate the amount of coal needed to light one 100-W incandescent lightbulb for each person for one year and the amount of coal that would be saved if each incandescent bulb were replaced with a CFL. Assume the coal has a NHV of 28.5 MJ · kg−1 and the power plants are 33% efficient.

Engineering

1 answer:

wariber [46] · Answer 1 · 2022-02-08T07:38:24+03:00

wariber [46]3 years ago

8 0

Answer:

Coal required is 101 Teragram/year.

Coal saved is 25.25 Teragram/year.

Explanation:

1 Teragram is exactly 1000000000 kilograms.