High School

We appreciate your visit to How many pounds of carbon dioxide would you prevent from entering the atmosphere in one year if you replaced a 100 watt light bulb with. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

How many pounds of carbon dioxide would you prevent from entering the atmosphere in one year if you replaced a 100-watt light bulb with a CFL bulb that uses 12 watts, assuming the fixture is on for 4 hours per day?

Answer :

Final answer:

You would save approximately 118.20 pounds of carbon dioxide per year by replacing a 100-watt incandescent bulb with a 12-watt CFL running 4 hours per day.

Explanation:

The question is asking for the amount of carbon dioxide savings by replacing a 100-watt incandescent light bulb with a 12-watt compact fluorescent lamp (CFL) that is running for 4 hours a day over a year.

First, we need to calculate the total energy savings in kilowatt-hours (kWh). Since a kilowatt is 1000 watts, we'll use the formula:

Energy savings = (Power of incandescent bulb − Power of CFL) * Time (in hours) / 1000.

For the incandescent bulb: 100 watts * 4 hours/day * 365 days/year / 1000 = 146 kWh/year.

For the CFL: 12 watts * 4 hours/day * 365 days/year / 1000 = 17.52 kWh/year.

The savings in energy would therefore be 146 kWh/year − 17.52 kWh/year = 128.48 kWh/year.

To convert the energy savings to pounds of carbon dioxide (CO2) prevented, we use the average emissions factor for the U.S. electric grid which is approximately 0.92 pounds of CO2/kWh (this number can vary based on the source of the electricity).

Total CO2 savings = 128.48 kWh/year * 0.92 lb CO2/kWh.

This results in around 118.20 pounds of CO2 savings per year.

Thanks for taking the time to read How many pounds of carbon dioxide would you prevent from entering the atmosphere in one year if you replaced a 100 watt light bulb with. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada