Energy Flow Flashcards
1
Q
Exergy
A
The useful energy (work potential) in a reservoir of energy. Its units are Joules. It’s the toothpaste coming out of the energy tube.
2
Q
How much energy is transported by the gulf stream per given time unit? Is that a force, energy or power?
A
- 1500 TW - equal to 1.5 million nuclear power plants
- power
3
Q
Three main types of energy or the world’s primary energy consumption, and 4 and 5
A
Crude Oil (38%), Coal (26%), and Natural Gas (23%) Nuclear and hydroelectric (6% each)
4
Q
How much energy is transported by the gulf stream per given time unit>
A
1150 TW
equal to 1.5 million nuclear power plants
Power
5
Q
What is energy use per capita in us vs France?
A
US = 11500W delivered, 4000W used France = 4500 W delivered, 1800 W used
6
Q
Have energy expenditures gone up or down since 1970 in US?
A
they have gone down slightly
7
Q
what are the approximate percentages of end-use sectors (residential, commercial, industrial transportation)?
A
Residential = 22% Commercial = 19% Industrial = 30% Transportation = 29%
