22
GEOTHERMAL ENERGY
GEOTHERMAL ENERGY
Geothermal exploration survey
Satellite imagery and aerial photography. Volcanological studies. Geologic and structural mapping. Geochemical surveys. Geophysical surveys. Temperature gradient hole drilling.
Geothermal exploration
Exploration commonly begins with analysis of satellite images and aerial photographs.
Suitable places for Geothermal Power Plant
Suitable places for Geothermal Power Plant
• The suitable places for establishing Geothermal Power Plant are where there are tectonic fault lines.
Suitable places for Geothermal Power Plant
IN EGYPT
Applications of geothermal energy
1) Power planets2) Residential usage
POWER PLANT
Geothermal energy ‘s greatest potential lies in the generation of electricity by Geothermal Power Plant .
Electric & NON-Electric Power Production(MW)
USA
Indo
nesia
Italy
Icel
and
El S
alva
dor
Costa
Rica
Russia
Guate
mal
a
China
Ethi
opia
Aust
ria
Thai
land
0
500
1000
1500
2000
2500
3000
3500
4000
NO. of Geothermal Power Stations, 2005
USA
Mex
ico
Italy
Japa
n
China
Guate
mal
a
Costa
Rica
Portu
gal
Aust
ria
Aust
ralia
Ethi
opia
Thai
land
189
57363332
1919151311 8 8 5 5 5 3 2 2 1 1 1 1 1 1
NO. of units,2005
Geothermal Energy Production of Total National Energy Production
Icel
and
Philipp
ines
Costa
Rica
El S
alva
dor
Keny
a
New Z
eala
nd
Nicar
agua
Indo
nesia
Mex
ico
USA
Japa
n0%
5%
10%
15%
20%
25%
30%
35%30%
27%
14% 14%11% 10% 10%
4% 3%0% 0%
Percentage of national production
Comparison of sulfur dioxide and carbon dioxide emissions between two fossil-fueled power plants, and a geothermal power plant.
Coal Oil Geothermal
12
10
2
SO2 Emissions (lbs/MW-hr)
Coal Oil Geothermal
1800
1550
150
CO2 Emissions(lbs/MW-hr)
CO2 Emissions from electricity generation, In 2005
Coal
Oil
Natural Gas
Geothermal
955
883
599
91
CO2 Emissions(lb/kWh)
Egypt evolution of electricity Generation
Applications of Geothermal Energy
Electricity41%
Space Heating23%
Geothermal Heat Pumps
12%
Greenhouse Heat-ing9%
Aquaculture6%
Industrial uses5% Cooling&Snow meltting
1%
others3%
Geothermal Heat Pump
Geothermal Heat Pump Installation Methods
Vertical closed-loop
A pair of pipes with a special U-bend assembly at the bottom is placed into bore holes from 100 to 400 feet deep
Geothermal Heat Pump Installation Methods
Horizontal closed-loop
A piping array is installed in trenches cut 3 to 5 feet deep and hundreds of feet in length
Geothermal Heat Pump Installation Methods
Surface water closed-loop
A piping array is submerged in a pond or lake at least 8 feet deep
Geothermal Heat Pump Installation Methods
Ground water open-loop
Well water from an underground aquifer is pumped through the geothermal heat pump and then returned to the aquifer or discharged to the surface
Black Point Inn - Prouts Neck, ME
Naval Observatory, Washington DC French Laundry Rest.- Napa, CA
Galt House Hotel - Louisville, KY
Gaillardia Offices – Okla. City
Statue of Liberty Gift Shop
California University of PA
Harvard Library – Cambridge, MA Whistler Village - BC, Canada
Hirschfeld Towers – Denver, CO
ASHRAE Headquarters - Atlanta, GA
Yale Art Bld. – New Haven, CT
