Geothermal Energy

Question 1

What forms does geothermal energy has?

Answer 1

1. Vents of steam
2. Naturally hot water underground
3. Stable ground temperature

Question 2

What are advantages of geothermal energy?

Answer 2

1. The earth does the heating (no fuel, renewable, inexhaustible)
2. Distributed throughout the world
3. Can be used for baseload power
4. No direct pollutants or GHG emissions

Question 3

What are some drawbacks of geothermal energy?

Answer 3

1. Might not be sustainable at local scale (can be depleted over time)
2. Limited understanding of the geological environment (long term impact?)
3. Low efficiencies

Question 4

What is an active fault?

Answer 4

Active faults are structure along which we expect displacement to occur.

Question 5

Where are geothermal resources easier to reach?

Answer 5

Near active faults

Question 6

For what purpose can geothermal energy be used?

Answer 6

Passive heating and cooling

Question 7

Give four different ways how to heat your house and the corresponding efficiencies.

Answer 7

1. Blue hydrogen 58%
2. Electricity from natural gas 173%
3. Green hydrogen 46%
4. Heat pump on green grid 270%