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Environmental Science Semester 2 An Introduction to Housing & Efficiency

Environmental Science Semester 2 An Introduction to Housing & Efficiency. Square Footage (Area). This is how the size of homes are measured, compared and communicated. It is a measure of the length and width of every room in the house added together.

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Environmental Science Semester 2 An Introduction to Housing & Efficiency

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  1. Environmental ScienceSemester 2 An Introduction to Housing & Efficiency

  2. Square Footage (Area) • This is how the size of homes are measured, compared and communicated. • It is a measure of the length and width of every room in the house added together. • It only includes “livable” or “finished” areas of the home. • Garages, un-finished basements and attics, patios/porches are not included in this number

  3. Trends in Housing… Square Footage Year

  4. Trends in Housing Size… • In 1970, the average home is 1,525 ft2 • By 1988, the average home was 2,000 ft2 • Today, the average home is over 2,600 ft2

  5. Why do we care about the size of houses? • Electrical consumption (light & appliances) • Heating/Cooling needs • Water heating • Cooking • Commuting

  6. Resources Consumed in Homes • Natural Gas • Cooking, Heating, Water Heating • Electricity • Appliances/Lighting, Cooking, Heating/Cooling, Water Heating • Fuel Oil • Heating, Water Heating • Wood • Heating, Cooking • Propane/LPG • Heating, Water Heating, Cooking • Kerosene • Heating • Other Fuels • Coal

  7. Home Construction by Decade

  8. The Age of Efficiency

  9. The Age of Efficiency… • OPEC Oil Embargo • The USA sides w/ Israel during a war with Syria and Egypt • OPEC cut off oil to the USA as a result • The price of petroleum products (gas, diesel, natural gas, kerosene, propane/LPG and fuel oil) increase. • The availability of these products declined

  10. The Age of Efficiency… • Global Warming • Scientists first present global warming models in 1977. • Increased levels of carbon dioxide lead to an increase in the retention of heat by the Earth • Global warming does NOT mean that it will always be warmer everywhere. It means that there HAS been an increase in the average temperature on Earth. • The result of global warming is an increase in temperature extremes and an increase in the severity of weather events (hurricanes, tornadoes, flooding, fires)

  11. What is the “Age of Efficiency”? • As a result of “resource scarcity”, people began to create technology that used less energy to operate. • This includes everything from television sets to cars and trucks • Homes built or remodeled after 1980 are more likely to be more energy efficient as a result. • windows & doors • Insulation

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