_Energy Conservation Worksheet

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University of South Florida *

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2011L

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Electrical Engineering

Date

Apr 3, 2024

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pdf

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Energy Conservation Worksheet Instructions: For this assignment, you will complete a personal energy audit, by calculating the amount of electricity you use in a year. Then, you will convert your energy use to the equivalent energy resources to determine your personal impact on energy resources and the environment. Lastly, you will calculate the financial costs of your energy use. Submit your worksheet to your instructor when completed. Pictures of work are at the bottom! Title: Krysta Vinacco, Ms.Stanek,5.06 Energy Conservation Worksheet Objective(s): you will complete a personal energy audit, by calculating the amount of electricity you use in a year. Then you will convert your energy use to the equivalent energy resources to determine your personal impact on energy resources and the environment. Lastly, you will calculate the financial costs of your energy use. Be sure to review the grading rubric before submitting the worksheet to your instructor Procedure: The materials and procedures are listed for you.

Materials: ● A calculator ● Appliance Energy Calculator at https://www.energy.gov/energysaver/save-electricity-and-fuel/appliances-and-electronics/estim ating-appliance-and-home Summary of Steps: 1. Using the Appliance Energy Calculator, determine the kilowatt-hour (kWh) of energy used per year of each appliance you use (or a family member uses on your behalf). The realistic expectation is at least 20 appliances you likely use within a year. 2. Place each appliance name and kilowatt-hour energy use per year in Table 1 in the data section. Add rows as needed. 3. Add all the energy values of all the appliance together. This is your total energy use for all appliances per year. Total Energy Use per year = 12,421 4. Calculate the % total energy of each appliance by taking its individual energy usage and dividing it by your total energy use for all appliances per year. Multiply that answer by 100. Place each % total in Table 1 . Example: 5. Convert your family’s yearly energy use to Btus using the conversion factors below: CONVERSION FACTORS 1 kwh (kilowatt hour) = 3,412 Btu 1 pound of bituminous coal = 12,000 Btu 1 barrel of oil = 5,800,000 Btu 1 cubic foot of natural gas = 1,028 Btu 1 gram uranium = 4 x 10 7 Btu Total Energy Use per year in Btu = 42,380,452 Calculate the amount of coal, natural gas, oil, and uranium required to meet your energy needs each year. Use the conversion factors above. Place these values in Table 2 .

6. Calculate how much each energy source will cost you per year of energy use. Use the conversion factors below. Place these values in Table 2 . CONVERSION FACTORS Coal costs about $25 per ton Oil costs about $90 per barrel Natural gas costs about $5 per 1000 cubic feet Uranium costs about 2 cents per gram Data Table 1 – Yearly Energy Use by Appliance Appliance Energy in Kilowatts % of Total ceiling fan cable box clothes dryer clothes washer 140.525 kWh 204.4 kWh 4073.4 kWh 372.3 kWh 1 2 33 0 coffee maker computer dishwasher electric air cleaner 400 kWh 225 kWh 173.58 kWh 438 kWh 3 2 1 6 garage opener hairdryer iron grass sprinkler 584 kWh 239.98 kWh 371.8 kWh 14.256 kWh 6 2 3 0 microwave printer rechargeable tool refrigerator 3517.5 kWh 13.052 kWh 10.66 kWh 164.25 kWh 28 0 0 1 television toaster vacuum video games 219.73 kWh 778.8 kWh 214.632 kWh 21.384 kWh 2 6 2 0

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