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Energy & Its Impact on Global Society - PowerPoint PPT Presentation

Energy & Its Impact on Global Society. Jerome K. Williams, Ph.D. Saint Leo University Dept. Mathematics & Sciences. Part 2: Introduction. Energy Resources & Reserves Energy Calculations Lifecycle of Energy Resource Energy Conservation. Energy Resources & Reserves.

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Energy & Its Impact on Global Society

Jerome K. Williams, Ph.D.

Saint Leo University

Dept. Mathematics & Sciences

• Energy Resources & Reserves

• Energy Calculations

• Lifecycle of Energy Resource

• Energy Conservation

• Two principal questions

• How large is each resource?

• How long will it last?

• Resources that can be recovered profitably using present technology are called reserves

• Each type of energy reserve is measured in units appropriate to its physical form

• Tons of coal (ton)

• Barrels of oil (bbl)

• Trillion cubic feet natural gas (tcf)

• Common Base Unit for Energy is called the British Thermal Unit (Btu)

• The amount of energy required to raise the temperature of 1 lb of water by 1 degree Fahrenheit.

• Approximately the energy released by burning a kitchen match

• U.S. oil reserves are estimated at 29 billion barrels, and we currently produce about 6 million barrels a day. How long, in years, will these reserves last at this production rate?

• Use or exploitation of resource shows three stages

• Initial period of increase

• Production reaches a maximum

• Decline phase eventually going to zero

• Total energy consumed in any activity is a result of two factors:

• How much energy output vs. amount you input?

• What is the length or amount of that activity?

• Efforts of energy conservation usually concentrate on two approaches:

• Technical Fix: goal is to reduce energy required for activity

• Lifestyle Change: Modify behavior to reduce frequency of activity

• Questions: 1, 3, 13, 17