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Presentation 10 th February 2010 in Ljubljana Introduction by Gustav R. Grob GEOCOGEN Concept and International Potential 2) Dr. Gustav Hans Weber (phys.) The Thermodynamic Process and Life Expectation 3) Martin Weber, MSc (chem.) The Chemistry of Geothermal Systems

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slide1
Presentation 10th February 2010 in Ljubljana
  • Introduction by Gustav R. Grob

GEOCOGEN Concept and International Potential

2) Dr. Gustav Hans Weber (phys.)

The Thermodynamic Process and Life Expectation

3) Martin Weber, MSc (chem.)

The Chemistry of Geothermal Systems

High Temperature Isolating Concrete

followed by project team implementation discussions

why use geothermal heat
Why use geothermal heat ?
  • 99% of the solid rock layer has at least 1000°C
  • 0.1% of the solid rock is cooler than 100°C
  • The average rock temperature gradient

is about 30°C per km depth world-wide

  • The geothermal heat is composed of

about 1/3 residual heat from the creation

of planet Earth and about 2/3 from continous

renewable and sustainable magma generation

.

types of geothermal power plants
Types of Geothermal Power Plants
  • HDR Hot Dry Rock, removes heat from hot dry rock

with delivered water by injection or by gravity

  • Single Flash

overheated steam with one cycle through the turbine

  • Double Flash

overheated steam with two cycles through the turbine

  • ORC Organic Rankine Cycle - one volatile component
  • Kalina-process uses mixture of ammonia and water
binary hdr system removes heat from hot dry rock by compressed water
Binary HDR System removes heat from hot dry rock by compressed water

Earth Quake Risk !

Problem: Kirchhoff‘s law

of the easiest way

slide12

Deep Hot Rock Geothermal Energy

  • Borehole systems
  • Hydraulic fracturing by high pressureHot-dry Rock system with safely controlled
  • with relatively small energy yields closed primary water cycle in insulated wells
  • or and
  • b) Boreholes to geothermal aquifers secondary steam turbine cycle with co-
  • open systems with limited energy generationfor district heating, AC,industry and greenhouses

Disadvantages:

a) Water is finding way of lowest resistance

= limited Energy yield

b) Only in hydro geologic strata often far from consumers.

Often high energy transport cost.

Often limited to heat production only.

Energy cost:

5-10 €¢ /kWh

Advantages:

No yields by hazard !

Super performance (GW).

No fuels or waste problems.

Excavated materials re-used.

Base load power plus heat

Energy cost: 2–4 €¢/kWh

advantages of geothermal deep well energy co generation
Advantages of geothermal deep well energy co-generation
  • Produces electricity and heat - suitable also for cooling
  • Much lower net cost than any other energy source
  • Can be built near agglomerations and substations
  • Less energy transmission line cost – hence also

less transmission losses than other power plants

  • Invisible, no air or water pollution and no noise
  • Ideal power source for clean electric vehicles
  • No radiation risks or other health hazards
  • Creates new clean sustainable jobs
  • No waste disposal problems !
  • Long life base-load plant
typical locations
Typical locations

Example NRW Subsitution of Nuclear & Coal

slide18
Map showing Caesium-137 contamination in Belarus, Russia & Ukraine. Curies per km2 (1 curie = 37 gigabecquerels).
geocogen planning sequence
GEOCOGEN planning sequence

4th phase

finacing &

implementation

3rd phase

engineering

& tendering

2nd phase

data analysis

field testing

1st phase

pre-

engineering

Final Layout

Chemical System

Final Scheduling

Permits & PPA

Vendor Selection

Logistic

Partners (EU etc.)

PPA Signatures

Financing

Site Management

Grid Connection

Company Registration

Commissoning

Start of operation

Feasibilty Checks

Data Analyses

Electrical Engineering

Steam Engineering

Safety Checks

Permit Investigations

Financing

Detrmination of Team

with Disciplines

Time Schedule

Pre-calculatations

Business Plan Draft

SWOT Analysis

Geologic Surveys

Financing Concept

conclusions and recommendations
Conclusions and Recommendations
  • GEOCOGEN is the most economical base load energy system
  • GEOCOGEN does not harm the health, environment & climate
  • GEOCOGEN can be installed near the energy consumption
  • A Swiss-Slovenian interdisciplinary task force is necessary
  • The EU should support a pilot plant in Slovenia
  • Engineering can be done in affordable stages
  • A national start up budget is needed
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