Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 423 for “"geothermal"”.
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Geoejector : extracting geothermal fluid from a low-pressure geothermal well
… was developed and tested at the Theistareykir Geothermal Field in 2020 and 2021. The system connected a low-pressure geothermal well to a nearby high-pressure well to induce flow from the low-pressure well under otherwise unfavorable pressure. The subsonic geoejector has similar working …
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Optimisation of feedwater heaters and geothermal preheater in fossil-geothermal hybrid power plant
… working conditions of a feedwater heater and geothermal preheater in a power plant that makes use of both renewable and non-renewable energy resources, where renewable energy (geothermal energy) is used to boost the power output in an environmentally sustainable way. Henceforth, a simplified …
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Crustal Stress Heterogeneity in the Vicinity of a Geothermal Field: Coso Geothermal Field, CA
… structures seen in image logs from the Coso Geothermal Field, CA record variation in the azimuth of principal stress. Image logs of these structures from five boreholes were analyzed to quantify the stress heterogeneity for three geologically distinct locations: two boreholes within the Coso …
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The geothermal potential of Luxembourg
The aim of this work is the evaluation of the geothermal potential of Luxembourg. The approach consists in a joint interpretation of different types of information necessary for a first rather qualitative assessment of deep geothermal reservoirs in Luxembourg and the adjoining regions in the …
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Airport Solar and Geothermal Power
… has been developed to understand how solar and geothermal energy systems are being utilized by airports throughout the United States. There is currently lit- tle specific research on this topic. As fuel prices continue to rise and sources of non- renewable energies begin to be unavailable and …
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Geothermal Resource Assessment of Mississippi
Geothermal energy is exploited through the process of using hot water or steam extracted from reservoirs of geothermal heat in Earth's crust which is derived from the upward convection and conduction of heat from Earth’s mantle and core. This energy can be harnessed to power geothermal heat pumps, …
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Interpretation of shallow geothermal surveys
… a surface geophysical method in ground water and geothermal energy exploration. Advances in numerical modeling techniques have made it possible to build a realistic model of the shallow subsurface. In particular, variable hydraulic and thermal properties can be included in models which couple …
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Decision analysis for geothermal energy
… key impediments to the development of enhanced geothermal systems is a deficiency in the tools available to project planners and developers. Weak tool sets make it difficult to accurately estimate the cost and schedule requirements of a proposed geothermal plant, and thus make it more difficult …
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Geothermal energy : silica precipitation and utilization
… experiments have been ongoing at the Reykjanes geothermal power plant, Iceland, since 2011. Silica samples were obtained from the field and thoroughly investigated to estimate the silica’s potential as a marketable product. Targeted applications were studied in detail and the main …
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Geothermal Systems Performance and Environmental Impacts
The use of fossil fuels for heating and cooling purposes is plagued by problems including environmental impacts, unsustainable production, and increased greenhouse gas production. This had led to a worldwide interest in developing sustainable sources of energy. One such energy is ground source heat …
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Performance of Deep Geothermal Energy Systems
Geothermal energy is an important source of clean and renewable energy. This project deals with the study of deep geothermal power plants for the generation of electricity. The design involves the extraction of heat from the Earth and its conversion into electricity. This is performed by allowing …
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Modelling of Subsidence in Geothermal Fields
… is an environmental issue at New Zealand geothermal fields, particularly Wairakei. It has resulted in submissions to geothermal resource consent hearings, subsequent operational consent conditions and long-term monitoring programs. Wairakei geothermal field has a complex subsidence …
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Fracturing and sealing in geothermal systems.
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Science.
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Thermal cracking in nonporous geothermal reservoirs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1980.
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Potential of geothermal energy in China
This thesis provides an overview of geothermal power generation and the potential for geothermal energy utilization in China. Geothermal energy is thermal energy stored in the earth's crust and currently the only ubiquitously available form of renewable energy that does not require a fuel or …
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Geothermal processes at the Galapagos Spreading Center
The measurements of the heat flow field of the Galapagos Spreading Center in an area of about 570 km2 reveal the planform of the conductive flux and permit the first truly areal estimate of the near-axis heat flux for comparison with theoretical plate cooling models. The intrusion process and …
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Numerical Model Studies of Enhanced Geothermal Systems
Enhanced Geothermal Systems (EGS) are being developed around the world as a method of extraction of thermal energy. A good EGS reservoir should maintain a small thermal drawdown and low water loss. All factors must be considered for optimal levels of energy production and assuring a long life span …
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Geothermal system at Kilauea volcano, Hawaii, The
Includes bibliographical references (pages 83-86).
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U.S. geothermal district heating : barriers and enablers
Geothermal district heating experience in the U.S. is reviewed and evaluated to explore the potential impact of utilizing this frequently undervalued renewable energy resource for space and hot water heating. Although the first U.S. geothermal district heating system (GDHS) was constructed in the …
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