Geothermal:

By: Sam Smith

Cost Effective Reliable

Sustainable

Innovative

Main Idea

• Geo=Earth • Thermos or Thermal=heat• Types- Binary, Flash, Flash/Binary and Dry

Steam• Heat extracted from the earth, that originates

from the formation of earth, radio active decay of minerals, and solar rays hitting the crust.

Binary Power Plants1. Water in Geothermal well is

pumped up into the heat exchanger, the water is then let back into the well.

1. A binary fluid (butane), which has a very low boiling point is put through the heat exchanger at 500 PSI and is then vaporized.

3. This vapor, exits through the turbine making it spin, creating electricity. Then the Vapor is captured and recycled.

• Able to be used in colder places then flash and dry steam plants

• Generates Typically 10 MW• Average Cost of building a Binary

Plant $33 Million

Dry Steam (flash) Power Plants

1. Steam is released from the ground.

2. Steam Turns the Turbine, creating electricity.

3. Water is then released back into the ground.

• Oldest known Geothermal use.

• Used by Caesar to warm his baths

• Typically used around Gysers

Flash/Binary Power Plants

1. When the geothermal fluid is pumped up it’s usually part liquid part steam

2. The Fluid is sent to the separator were the steam is sent straight to the turbine and the heated water is sent to the Vaporizer.

3. Where it is vaporized thus creating steam.

4. Then Everything is recycled once more

• Most Common Geothermal Power Plant

My Plan For New Hampshire

• Binary Geothermal Power Plant• Budget for Construction $33 million• Land- 250 acres, Amherst, NH, Industrial Land

use. Central NH, $3 million.

Cons of other forms of Energy