Lecture 2: Energy Transitions and Vocabulary

Question 1

U.S. total consumption in Quads

Answer 1

98 quads

Question 2

World total consumption in Quads

Answer 2

531 quads

Question 3

2013 U.S./World energy consumption by fuel

Answer 3

84/86% fossil fuels - 13.6/13.3 other sources

Question 4

Three shifts in energy transition

Answer 4

1. Change in total demand for energy
2. Change in end uses for energy
3. Change in sources of energy

Question 5

Energy

Answer 5

Quantity - Ability to do work

Question 6

Power

Answer 6

Rate - Work over time

Question 7

Scientific Unit for Fuels

Answer 7

BTU - British thermal Units
Quad - 1 quadrillion Btu
Joules (j, kj, Mjj)

Question 8

Scientific Unit for Fuels

Answer 8

BTU - British thermal Units
Quad - 1 quadrillion Btu
Joules (j, kj, Mj)

Question 9

Scientific Unit for Electricity

Answer 9

kWh - Kilowatt hour
MWh - Megawatt hour
GWh- Gigawatt hour

Question 10

Proxi units for Volume

Answer 10

Barrels of energy (boe)
Barrels of oil equivalent (Boee)
Cubic Feet

Question 11

Proxi units for mass

Answer 11

Assumes a gravimetric energy density
Tons of energy
tonnes of oil equivalent
kg of energy (kgoe)

Question 12

Energy

Answer 12

Quantity - Ability to do work
Energy = Power x time
Light consumes energy at a rate of 100W

Question 13

Power

Answer 13

Rate - Work over time
Energy produced over a period of time
Energy consumed over a period of time

Question 14

Nucleal Power Plant Power Capacity

Answer 14

1 GW
After 1 hour it generates 1 Gwh of electricity
After 1 year it generates 8760 hours per year

Question 15

Converting GWh to kWh

Answer 15

1 GWh = 1 million kwh

Question 16

Total U.S. electricity in 2011

Answer 16

4000 billion kwh

Question 17

Primary Energy

Answer 17

• Petroleum
• Natural gas
• Coal
• Biomass
• Water
• Wind
• Solar

Question 18

Secondary Energy

Answer 18

Converted/Stored Energy

Question 19

Secondary Energy

Answer 19

Converted/Stored Energy

• electricity
• hydrogen
• pumped hydroelectric

Question 20

Blue barrel

Answer 20

42 gallons

Question 21

Energy Notation

Answer 21

MW - megawatts - 1 million watts

MMBTU - Million Btu -

Question 22

Kwh to Btu Conversion

Answer 22

1 [Kwh] = 3412 [Btu]

Question 23

Natural gas conversion

Answer 23

1000 Standard Cubic Feet (SCF) = 1 Million Btu