Create a Personal Energy Usage sheet. Using your energy bills (electricity, natural gas, bottled propane, oil, etc.) determine the average daily energy usage of your family. Report this figure in Joules per person per day. Also, determine the amount of gas used as a daily average. Estimate the gallons purchased per car per month and divide this total by 30 and then by the number of family members. Convert all numbers to joules of energy per person per day.
Do the numbers given from your calculations give a good description of the total energy usage per day? Why or why not?

Start Read Date

End Read Date

Consumption

Units

10/25/2006

11/22/2006

28.756

Therms

11/22/2006

12/22/2006

48.269

Therms

12/22/2006

1/25/2007

42.148

Therms

1/25/2007

2/23/2007

90.64

Therms

2/23/2007

3/26/2007

35.02

Therms

3/26/2007

4/25/2007

30.78

Therms

4/25/2007

5/24/2007

27.702

Therms

5/24/2007

6/26/2007

24.648

Therms

6/26/2007

7/25/2007

22.748

Therms

7/25/2007

8/24/2007

24.672

Therms

8/24/2007

9/26/2007

25.725

Therms

9/26/2007

10/25/2007

23.598

Therms


⋅ Total 424.206 Therms over 11 months. Average 38.610 Therms.
⋅ Three person family – 12.87 Therms per month per person
⋅. 429 Therms per day per person
⋅ 45261902.4 Joules per day per person



⋅ Average: About 62.18 KWH over 11 months.
⋅ Three person family – 20.73 KWH per person per month
⋅.691 KWH per day per person
⋅ 2487600 Joules per day per person

⋅ PT Cruiser
    4 fill ups a month, 15 gallon tank
⋅ Ford F150
   4 fill ups a month, 25 gallon tank
⋅ Three person family: 40/30/3 = .44 gallons per person per day
⋅ 5.26 x 10^7 Joules per person per day

No. It does not give a good representation because on a day to day basis, usage fluctuates based on one’s activities. For example, one day my father might use a leaf blower or his electric cooker, which seems to use more electricity, but the next day, we might not collectively use anything other than what was needed.