News
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http://www.boston.com/lifestyle/green/articles/2009/11/30
/new_england_sending_a_crowd_to_climate_talks/
http://www.cnn.com/2009/US/11/28/tracking.trash/index.
html
http://www.reuters.com/article/email/idUSTRE5AM4GR200
91123
http://www.reuters.com/article/email/idUSTRE5AN4L62009
1124
http://www.boston.com/news/local/articles/2009/11/29/les
s_trash_adds_up_to_more_cash/
http://www.boston.com/news/world/europe/articles/2009/
11/30/climate_talks_progress_but_hurdles_remain/
http://www.boston.com/business/articles/2009/11/30/rem
odeled_star_market_well_stocked_with_innovative_green_t
echnologies/
Household Energy
(Gas Heat)
 My
house-November 173 “therms”
– $0.45 per day
– $0.39 per therm for first 29 therms
– $0.22 per therm for next 39 therms
– $1.36 per therm delivery charge
– Total Cost is $266
 What
is a therm?
Therm
=100,000 British Thermal Units (BTU)
 ~100 cubic feet of natural gas at standard
temperature and pressure
 29.3 kilowatt-hours
 http://www.onlineconversion.com/energy.
htm
 1 therm = 0.80 gallons of gasoline

– 173 thems = 138 gallons of gasoline

1 therm ~ 11 pounds of dry wood
Household Energy
(Electricity)
 1542
kilowatt-hours
– Delivery charges $0.065 per kWh
– Generation charges $0.108 per kWh
 Total
Cost=$333
 1542 kwh=42 gallons of gasoline
How much energy does it take to
power a human?
 2000
Calories per day
 365 days per year
 730,000 Calories = 23 gallons of
gasoline per year
– Or about 600 miles driven
Energy Usage
Figure by UMB OpenCourseWare
Energy Usage

Industrial (Facilities used for producing and processing goods.)
– 22% chemical production
– 16% petroleum refining
– 14% metal smelting/refining

Transportation (Vehicles which transport people/goods)
– 61% gasoline fuel
– 21% diesel fuel
– 12% aviation


Residential (Living quarters for private households.)
–
–
–
–
–
–
–
32% space heating
13% water heating
12% lighting
11% air conditioning
8% refrigeration
5% electronics
5% wet-clean (mostly clothes dryers)
–
–
–
–
–
–
–
25% lighting
13% heating
11% cooling
6% refrigeration
6% water heating
6% ventilation
6% electronics
Commercial (Service-providing facilities and equipment (businesses,
government, etc)
Energy Homework (2 pts)

1.) Find your household Electricity and Heating
(oil, natural gas, or propane). Determine your
annual energy usage per household.
– Note: If you rent and do not pay your own utilities, try
to find this from your landlord. If not available, find this
number for the average American.
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2.) Convert the total energy usage (for electrical
and for heat) to gallons of gasoline (US) using
the following website:
http://www.onlineconversion.com/energy.htm
3.) Estimate how much energy your household
could realistically conserve.