geothermal Articles
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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 ...
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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 predicting that ...
By BRGM
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Dynamic simulation and 2D multiple scales and multiple sources within basin geothermal field
In order to accurately describe the geothermal field within a basin, it is necessary to divide it into the normal geothermal field and additional geothermal field. For the accuracy by describing of the additional geothermal field, grids need to be increased. Traditional unequal interval difference method can be used to solve this problem, which has to increase grids within the unnecessary area, ...
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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 Agency, a whopping 22 percent of the electricity used in El Salvador comes from geothermal. The vast reserves of geothermal power buried ...
By Ensia
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Nevada Geothermal, Ormat to develop Oregon resource
Nevada Geothermal Power Inc. (Vancouver, B.C.) and Ormat Nevada Inc., a subsidiary of Ormat Technologies Inc. (Reno, NV), have signed an agreement under which the two companies will jointly develop, construct, own, and operate one or more geothermal power plants at the Crump Geyser Project Area in Lake County, Oregon. The agreement calls for the formation of a limited liability company, Crump ...
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Tech/Business outlet GigaOm features Newberry Demonstration
GigaOM.com, a website dedicated to the intersection of technology and business, recently featured AltaRock’s work at the Newberry EGS Demonstration. The article was written by GigaOM editor Katie Fehrenbacher, a seasoned reporter in the energy and investment space, who interviewed AltaRock’s Susan Petty for the piece. Fehrenbacher’s writeup offers a nice overview of the ...
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Performance assessment of an integrated absorption cooling–hydrogen liquefaction system using geothermal energy
An integrated geothermal based triple effect absorption cooling and Linde–Hampson system for hydrogen gas liquefaction is proposed and analysed thermodynamically. The effect of various operating conditions and parameters on the system performance is studied. The results show that the mass of hydrogen gas pre–cooled by the absorption system per unit mass flow rate of geothermal water flowing ...
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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 ...
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Effect of Non-Condensable Gases on geothermal power plant performance. Case study: Kizildere Geothermal Power Plant-Turkey
Non-Condensable Gases (NCGs) are natural components of geothermal fluids, and they are a source of considerable capital and operating costs for power plants. The NCG content of geothermal steam varies over the world from almost zero to as much as 25% (wt). In this work, the influence of NCGs on the thermodynamic performance of geothermal power plants is analysed for various NCG content and ...
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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 ...
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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 ...
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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 ...
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Projects Greenfield EGS, Weyerhaeuser Leases, WA, OR, CA - Case Study
In 2008 AltaRock Energy made an agreement with Weyerhaeuser Company (NYSE:WY) to explore the potential for developing geothermal projects on 667,000 acres of land in California, Oregon, and Washington. After 3 years of exploration and evaluation, AltaRock exercised its option to lease the geothermal right to approximately 45,000 acres of the land with the best potential for geothermal ...
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Geothermal Survey Project for SINOPEC, Texas - Case Study
In April 2014, we designed and implemented the seismoelectric survey in south of Houston, TX to detecting the geothermal resource for Sinopec ...
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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. ...
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Projects Davenport Newberry Holdings, LLC. - Case Study
AltaRock Energy, Inc. actively manages over 40,000 acres of geothermal leases on the western flank of Newberry Volcano in central Oregon. The leases, held by Davenport Newberry Holdings, LLC. (DNH) and administered by the US Bureau of Land Management, represents a unique opportunity to test and develop Enhanced Geothermal System (EGS) technologies in the field. In partnership with the US ...
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Pioneering Technology to Unlock a Clean Energy Future
At Strada, our mission of unlocking the potential of geothermal energy through our technology is something that drives us every day. It’s always a great pleasure to meet other individuals that share our commitment and passion, and we were delighted and honoured to be able to catch up with Geothermal entrepreneurship champion, Dr Bob Metcalfe. As well as being the inventor of the ...
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Boron pollution due to geothermal wastewater discharge into the Buyuk Menderes river, Turkey
Kizildere, which is the only commercial geothermal power plant in Turkey and located in Buyuk Menderes Graben in south-west Turkey, discharges annually 6 million tonnes of wastewater into the Buyuk Menderes river, creating environmental pollution. Currently, the wastewater, which includes up to 24 mg/l boron, is discharged into the river at a rate of 750–1500 tonnes per hour. The temperature of ...
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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, ...
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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 ...
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