geothermal energy Articles

  • DYGEO: boosting support for geothermals to promote the use of this green energy

    In 2018, ADEME and BRGM decided to focus on increasing the visibility of geothermal energy. First of all, this involves uniting the organisations that are promoting geothermal energy around an “advocacy campaign” for surface geothermal energy and then also of increasing the visibility of geothermal energy on the Internet. The need With the Multi-Year Energy Plan ...


    By BRGM

  • Rational use and management of geothermal energy resources

    This article identifies and explains several attributes of geothermal energy. High exergetic efficiency due to a close temperature tie between geothermal energy and district heating and cooling was noted. Parameters governing the rational use and management of geothermal energy systems with special emphasis on integrated-cascaded district energy systems were formulated and explained with two case ...


    By Inderscience Publishers

  • Exergy analysis of geothermal electricity using the Kalina cycle

    The geothermal energy that is stored in the earth is so vast that could supply all the energy needed by humanity. The difficulty in tapping this energy lies in its diffusivity. The geothermal energy in regions near volcanoes is close to the surface and easy to use economically. In this paper a vapour dominated system will be examined. The electricity that is produced from such a system is ...


    By Inderscience Publishers

  • Identification of high-prospect geothermal energy projects in China

    This project will focus on the identification of highly prospective geothermal energy projects in China with cooperation of Australia. The emphasis will be on geothermal prospects in the non-volcanic regions that comprise the bulk of China. The primary goal of the proposed co-operative project is to produce a portfolio of high prospect geothermal projects that are ranked in terms of ...

  • Hydrogen as transport fuel in Iceland. The political, technological and commercial story of ECTOS

    Through the political, the technological and the commercial story of the early phases of the ECTOS project and its background, the implementation of hydrogen as transport fuel in Iceland is analysed. The presence of large amounts of geothermal energy is the resource basis for the governmental plans for converting Iceland into a hydrogen economy. Strong political commitment has established the ...


    By Inderscience Publishers

  • Artificial geothermal energy potential of steam-flooded heavy oil reservoirs

    This paper explores the concept of harnessing geothermal energy from heavy oil fields that have undergone steam flooding and so accumulated substantial heat from steam injection. Once the steam flooding process reaches economic cut-off resulting from high water cut and/or high steam-to-oil ratio, the reservoir would be abandoned, leaving behind stored energy in the form of heat. From this point, ...


    By Inderscience Publishers

  • Investigation of some renewable energy and exergy parameters for two Geothermal District Heating Systems

    In this study, three new exergy parameters, namely total exergy destruction ratio, component exergy destruction ratio and dimensionless exergy destruction are introduced in addition to energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio and exergetic reinjection ratio, and compared for Edremit and Bigadic Geothermal District Heating Systems (GDHSs) based on ...


    By Inderscience Publishers

  • Evaluation of utilisation opportunities of geothermal energy in the Kavala region, Greece, using exergy analysis

    Greece has a lot of geothermal energy fields. Due to legal inefficiencies, the exploitation of this renewable energy source remains at very low levels. In this work, the operation of a cogeneration (hot water and electricity) geothermal plant that could be built in Eratino, Greece, is analysed. The research on the development of a low enthalpy geothermal field is investigated as a very essential ...


    By Inderscience Publishers

  • Earthy, solaris and atmospheric energy sources

    Earth, sun and atmosphere are the ultimate energy resources. In addition to fossil fuels, earth radiates over 45 TW geothermal energy. Sun radiates about 89 PW energy to earth's surface. Lunar gravity supplies over 100 GW tidal ocean energy. Accessible energy from geothermal, solar, tides, waves and winds is far more than our current 17 TW energy demand, yet there are new avenues like tornadoes ...


    By Inderscience Publishers

  • Striving For Perfection: Flow Energy Partnership Improves Geothermal Energy Production

    Since the early twentieth century, geothermal energy has been used to produce electricity. In the 1980’s and 90’s, rapid expansion in the demand for geothermal energy put pressure on suppliers to reduce costs and increase efficiencies. Now geothermal energy production is becoming a common practice around the globe. One of the largest energy companies in Turkey is blazing the ...


    By Sierra Instruments, Inc.

  • This small Central American country is a renewable energy powerhouse

    When you think of places that rely on geothermal power for energy production, El Salvador probably isn’t the first location that comes to mind. But this tiny Central American country is a geothermal powerhouse. According to the International Energy ...


    By Ensia

  • Electricity production from geothermal sources by binary system; choosing secondary fluids

    Because of the increasing prices of fossil fuels and the demand for cleaner electricity production, many sources of renewable energy have been proposed. Although Turkey has the seventh highest geothermal potential in the world and the second highest in Europe, electricity generation from geothermal energy is quite low. The purpose of this article is to search for the possibility of electrical ...


    By Inderscience Publishers

  • Design of method and mechanism for geothermal energy extraction

    By drilling using a specially designed hydride carbide (melting point: 1,365°C) drill, we can drill the earth's crust to about 5 to 40 km to reach temperatures of 700 to 1,000°C, with minimum cost of the drill and drilling technology. Further, we can extract energy by pouring in water on an inserted carbide alloy vessel into the drilled well and bringing out as steam to drive the turbines. By ...


    By Inderscience Publishers

  • Alternative scenarios of the utilisation of renewable energy sources in small prefectures: a case study in Lasithi Prefecture, Greece

    The sector of Renewable Energy Sources (RESs) is growing very fast, with many innovations and applications becoming a reality. The continuous reduction of natural resources has forced all policymakers to turn to alternative energy sources. The total energy (oil and electricity consumption) consumed in the prefecture of Lasithi during the years 1997?2002 in correlation with the RES exploitation ...


    By Inderscience Publishers

  • Thermodynamic analysis of a geothermal district heating system

    Thermoeconomic analysis is considered a useful tool for investigators in engineering and other disciplines due to its methodology based on the quantities exergy, cost, energy and mass. This study deals with an investigation of capital costs and thermodynamic losses for devices in the Balcova Geothermal District Heating Systems (BGDHS). Thermodynamic loss rate-to-capital cost ratios are used for ...


    By Inderscience Publishers

  • World geothermal power generation nearing eruption

    With fossil fuel prices escalating and countries searching for ways to reduce oil dependence and greenhouse gas emissions, capturing the earth’s heat for power generation is garnering new attention. First begun in Larderello, Italy, in 1904, electricity generation using geothermal energy is now taking place in 24 countries, 5 of which use it to produce 15 percent or more of their total ...


    By Earth Policy Institute

  • Renewable energy technologies in Nepal

    Nepal, one of the least-developed countries, has a per capita energy consumption of about 336 kilograms of oil equivalent (kgoe), which is much below the world average of 1,474 kgoe. Around 85.27% of the total energy consumption comes from traditional energy resources and only 0.48% from renewable sources. About 40% of the total population has access to electricity. This 40% uses 33% from the ...


    By Inderscience Publishers

  • Exergoeconomic evaluation of a geothermal power plant

    In this study, exergy and exergoeconomic analyses of the Dora II geothermal power plant (DGPP) with 9.5 MW net power output are carried out by using real thermodynamic and cost data. The exergetic efficiency of this plant is calculated to be 29.6%. The highest exergy destruction rate among the DGPP components occurs in the cooling towers followed by the turbines, vaporisers, preheaters and pumps. ...


    By Inderscience Publishers

  • Exergy analysis and pressure optimisation of geothermal binary power plants

    Binary geothermal power plants are used for power production from moderate temperature geothermal reservoirs (85-170°C). In performance analysis of those plants, the second law of thermodynamics is used like in other conventional power plants. In this paper, the exergy analysis and pressure optimisation methods are described for binary power plants. The method described is applied to a ...


    By Inderscience Publishers

  • The effect of ambient temperature fluctuation on the performance of geothermal power plants

    Seasonal and diurnal temperature fluctuations have significant effects on cooling water temperature and on the condenser temperature. The power produced by plants that utilise a low temperature resources, such as geothermal units, are more susceptible to ambient temperature fluctuations than conventional power plants. An exergy analysis was performed to evaluate the effect of ambient temperature ...


    By Inderscience Publishers

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