1. Personal Awareness and Energy Consumption.
Brian Hardison
Final Presentation
DATE 7/18/16
Knoxville, Tennessee

2. Lesson 1- Appliances and Energy Savings
Example of monthly energy costs
Appliance
Watts
125 watts
Killowatts
125/1000
= .125
Hrs./day
125 x 3 days
= .375
Kwh/month
.375 x 30 days = 11.25
11.25 for the month
Cost/month
11.25 x .10 =
$1.13
*assuming your power company charges .10 cents per kilowatt per hour for the energy*

3. Many appliances- even when turned off- use electricity
Interesting Facts
Typical American family has 40 appliances that are routinely plugged in even when not actively being used.
Many appliances- even when turned off- use electricity
Average household uses $1,900 dollars per year on energy costs according to U.S. Dept. of Energy
5-10% of these costs are from appliances that are plugged in 24 hours/day
Computer and televisions consume the most energy while plugged in.
Other appliances that use energy continously; dvd players, modems, cable boxes, radios, coffemakers, lamps, toasters, ipod/iphones and other electronic gadgets

4. Higher Order Thinking Questions
“Are there some appliances that would be difficult to unplug?”
“Are there some appliances that should not be unplugged?”
“Are there alternatives to unplugging appliances?”
……..The goal is to spark a discussion about smart appliances. These appliances make the adjustments themselves such as; water heater or dryer adjusting the temperature for maximum efficiency.

5. Math Lesson
Have student find the mean of 5-10%, which represents energy wasted on appliances plugged in 24 hours a day
7.5% is the mean and students will retrieve electric bill from their home and multiply it times(.075) then multiply it times 12 months.
Example : $200 electric bill x .075 x 12 months = $180 per year/home
According to Census Bureau… million homes, students would then calculate total savings across the United States
“What would this mean for the grid if everyone slightly changed their behavior/habits?”

6. Lesson 2- Solar Panels Formula 1(***Fixed Formula***)
 - If your latitude is below 25 degrees, multiply the latitude times .87.
   Example…Bogota, Columbia’s latitude is 5 degrees
                     5 X .87 = 4.4 (So, 4.4 would be the estimated angle of panel)
Formula 2
 -If your latitude is between 25 degrees and 50 degrees, multiply the latitude times .76, then add 3.1.
    Example… Minneapolis, Minnesota’s latitude is 45 degrees
                    45 X .76 = = 37.3 (So, 37.3 would be the estimated angle of panel.

7. Solar Car Construction and Questioning
Assemble car for students to observe.
Have students use protractors to determine accurate angle of their panel on car.
Higher order questioning….”How could solar panels help with reducing energy consumption?”, “How would this help the grid?”,
“What if your home’s solar panels produce more energy than
needed to operate home?”

8. Lesson 3 ….Incandescent vs. CFL
Categories
Incandescent
CFL
Watts consumed (W) 60 13
Rated Lamp Life(hours)
10,000
8,000
Electricity cost per kWh($/kWh)
.10
Cost per bulb($)
.25
3.00

9. Interesting Facts
90% of energy giving off by incandescents is in the form of heat.
The heat from these bulbs warms the room up thus causing the AC to work longer and harder which increases strain on the grid.
CFl bulbs would not only save on lighting costs but also cooling costs.
20-30% of electric bill is consumed by AC unit.
If every home replaced one incandescent bulb to a CFL- it would save enough energy to light 3 million homes and prevent greenhouse gas emissions equivalent to 800,000 cars

10. Math lesson
Incandescent….60 watt / 1,000(converts into kWh) = .06 x 8,000 hrs(lamp life) x .10(average charge/kWh by utility company) cents to purchase bulb =$48.25 cost for bulb to operate 8,000 hrs(approx. one year)
CFL…..13 watt/1,000(converts into kWh) = .013 x 8,000 hrs(lamp life) x .10 (average charge /kWh by utility company) to purchase bulb = cost per bulb to operate 8,000 hrs(approx. one year)
Have students figure out savings( diff)
Average room has 4-6 bulbs
Average home has 8-10 rooms
Yearly savings

11. Sources and Acknowledgements
save-money/ /
Thank you to Erin Wills and Dr. Chen for allowing me to participate in Curent Summer Programs.
Brian Hardison
Final Presentation
DATE 7/18/16