energy_conservation_worksheet

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Northeastern University *

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4020

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Industrial Engineering

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Jan 9, 2024

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docx

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4

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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. Title: Energy Conservation Calculations Objective(s): Determine my personal impact on the environment and energy resources 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/estimating-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 = 31,156.88 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 = 106,307,275 Btu 6. 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 . 7. 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 Clothes Dryer 3348 kWh 10% Microwave 900 kWh 2% Washer machine 306 kWh 0.9% Oven 630.6 kWh 2% Vacuum 162.6 kWh 0.5% TV 854.1 kWh 2% Ceiling fan 127.75kWh 0.4% Coffee maker 730 kWh 2% Hairdryer 213 kWh 0.6% Printer 9.49 kWh 0.03% Refrigerator 657 kWh 2% Sound System 144.54 kWh 0.4% Water heater 19710 kWh 63% Space heater 1320 kWh 4% Rechargeable power tool 13 kWh 0.04%
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