Geothermal energy

Question 0

where are geothermal resources found?

Answer 0

convergent and/or divergent lithospheric plate boundaries

molten magma near surface or areas of volcanic activity

Question 1

sources of earth internal heat

conduction

Answer 1

heat of formation

radioactive decay

Question 2

classification of geothermal sites

Answer 2

liquid dominated. hot liquids
vapor dominated. water turned to steam
hot dry rock. water needs to be pumped to the rock

Question 3

geothermal exploration surveys?

Answer 3

geochemical surveys

temp gradient hole drilling

Question 4

criteria for choosing a site for geothermal energy generator

Answer 4

magma intrusion
presence of geofluid
porous rock for a reservoir
caprock

Question 5

types of thermal generator power plant

Answer 5

dry steam
flash steam- produce steam and extract from fluid
binary cycle- 2 cycles. 1 brings in heat and 1 extracts it

Question 6

name some countries using geothermal powerplants

Answer 6

philippines
australia
usa
new zealand
china

Question 7

geothermal process

5 steps

Answer 7

• fluid in subsurface is heatedby heat energy in the rock
• heated fluid gets pumped in and converted to steam
• steam turns the turbines producing energy
• if the fluid is still steam then goes to cooling towers
• fluid is returned to the ground to the subsurface reservoir