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# To Dry Or Not To Dry

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Energy Conservation Project

Energy Conservation Project

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• 1. To Dry or Not to Dry? By: Kristin Teeples
• 2.
• How much energy would I save if I air dried my hair every morning instead of using a hair dryer?
• How much money would I save?
• How many pounds of CO 2 would I prevent from being emitted into the atmosphere?
My Questions:
• 3. Background ? ? ? CO 2
• 4. What the heck is a pound of CO 2 ?
• One pound of carbon dioxide gas has the volume of 9 cubic feet . You could store 2 pounds of carbon dioxide in the average kitchen refrigerator.
• 454 grams in a pound
• 1 mole (6.022045 × 10 23 ) of carbon dioxide molecules = 44 grams (16 + 12 + 16)
• 454/44 = 10.32 moles of CO 2 per pound
• 10.32 * 6.022045 × 10 23 = 6,210,000,000,000,000,000,000,000 CO 2 molecules! in 1 lb
• 1 Kilowatt-hour = 1.37 pounds of CO 2
• 5.
• Check wattage of hair dryer
• Timed how long to dry hair
• Look at energy bill
• Calculations
Methodology:
• 6.
• 1. Blow Dryer = 1875 watts (1.875 kw)
• Time to dry hair = 5 min every day
• Time in a year: 5 * 365 = 1825 min (30.42 hrs)
• Energy used: 1.875 kw* 30.42 hrs = 57.03 kwh
• 2. 57.03 kwh * \$0.079/kwh = \$4.50
• 3. 1.37 pounds of CO 2 /kilowatt-hour
• 1.37 lbs CO 2 x 57.03 kwh = 78.13 lbs of CO 2
• kwh
• 485,187,300,000,000,000,000,000,000 CO 2 molecules!
Data Collection/Calculations: (in one year)
• 7. Conclusion: DRY!
• 8. Bibliography:
• http://www.lipower.org/pdfs/company/pubs/brochures/energyguide.pdf
• http://www.science-house.org/CO2/activities/co2/basic.html