Abstract

The EU is the world's largest energy importer, relying on imports for 50 % of its energy needs. With an energy demand forecast likely to grow by 1-2 % a year, that figure will over the coming 20-30 years rise to 70 %.The Geothermie is an inexhaustible energy source. With the supplies, which are stored in our planet, in principle the world-wide power requirement could be covered. The Geothermie, or terrestrial heat, is the warmth stored in the upper (accessible) part of the earth's crust. It covers the energy, as far as it can be extracted and used, stored in the earth, and ranks among the regenerative energies. It can be used both directly, approximately for heating and cooling in the heating market, and for the production by electric current or in a force heat coupling.Production of heat using geothermal energy can be obtained in two very distinct ways. The first consists of directly exploiting subterranean water tables whose temperatures are included between 30 °C and 150 °C (so-called medium and low temperature applications). The second makes use of geothermal heat pumps that come under the heading of so-called very low temperature applications.

Highlights

  • The EU is the world’s largest energy importer, relying on imports for 50 % of its energy needs

  • There are many geothermal prospects with high temperature, but they either lack fluid in the formation or the rock permeability is too low for permitting fluid circulation

  • ORC plants suffer from this low thermal effectiveness that leads to high energy needs for the process, especially with cooling

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Summary

Introduction

The EU is the world’s largest energy importer, relying on imports for 50 % of its energy needs. Europe’s energy needs are growing relatively slow in comparison to other parts of the world. It has to compete increasingly for energy resources. Binary plant technology is playing a very important role at the modern geothermal electricity market. The economics of electricity production are influenced by the drilling costs and resource development (typical quota is 30 % for reservoir and 70 % plant); the productivity of electricity per well is a function of reservoir fluid thermodynamic characteristics (phase and temperature), and the higher the energy content of the reservoir fluid, the lesser is the number of required wells. Research and Development is required to develop potential for the other areas [2]

Present Technology for geothermal electricity generation
Kalina-Process
Technology Systems for low enthalpie power generation
Findings
Summary
Full Text
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