PLM - 230330

Question 1

Energy – Prosperity – Environmental Dilemma

Answer 1

Thring sufficiency concept 1998. The more we consume the lesser the quality of life, there’s a range in which we have sufficient quality of life.
Tons of Oil Equivalent per person: USA 6 TOE, Europe 3 TOE

Question 2

Societal reactions

Answer 2

Radical Ecology (No ecology, menonites)(population crash),
Deep Ecology (Low tech, where possible),
Industrial Ecology (Tech to improve sustainability, with environmental considerations),
Continuation of Status Quo (population crash)

Question 3

Mathematical approach

Answer 3

Sustainability impact: S
A: Population using the technology
B: Role of tech in economy
C: Impact of using the tech in the environment
D: CO2 emitted per kWh
S = CO2 (only one factor) –> Kaya Equation

Question 4

Modified Kaya Equation

Answer 4

Modified Kaya: the sum of all the negative effects multiplied by an individual weight.
Also called Kaya Identity

Question 5

Define kWh

Answer 5

1000 W (J/sec) * 1 hour (3600 sec)

Question 6

Classification of Energy

Answer 6

Primary: Nature ocurrent, solar energy, coal, uranium.
Secondary: Electricity, gasoline, fuels. Produced by primary energy. Hydrogen: no mine available, you must to produce the hydrogen, CO2 emissions are involved.
End energy: As required by the end user, Heat energy for a room, mechanical work in industry, personal trasportation.