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Geothermics
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#1Alex Laferriere (École Polytechnique de Montréal)H-Index: 1
#2Massimo Cimmino (École Polytechnique de Montréal)H-Index: 7
Last.Lieve Helsen (Katholieke Universiteit Leuven)H-Index: 29
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Abstract This paper presents the development and validation of a full-time-scale semi-analytical bore field simulation model. The model allows for the simulation of bore fields comprised of arbitrarily positioned boreholes while accounting for both short-term transient thermal effects within the boreholes and long-term thermal interactions in the bore field. The g-function of the bore field, obtained from the finite line source solution, is corrected to account for the cylindrical geometry of th...
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#1Noémie Chagnon-Lessard (Laval University)H-Index: 1
#2François Mathieu-Potvin (Laval University)H-Index: 9
Last.Louis Gosselin (Laval University)H-Index: 25
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Abstract Four variants of the Organic Rankine Cycle (ORC) applied to geothermal power plants are optimized by means of numerical tools. These variants are: (i) the subcritical ORC with single-pressure heater (ORC/S/SC), (ii) the transcritical ORC with single-pressure heater (ORC/S/TC), (iii) the subcritical ORC with dual-pressure heater (ORC/D/SC), and (iv) the transcritical ORC with dual-pressure heater (ORC/D/TC). All the systems are recuperative and include a wet cooling tower. The objective ...
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#1Vijay Chauhan (RU: Reykjavík University)
#2Maria S. Gudjonsdottir (RU: Reykjavík University)H-Index: 2
Last.Gudrun Saevarsdottir (RU: Reykjavík University)H-Index: 6
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Abstract The work presents computational modeling and an experimental investigation of silica deposition occurring in geothermal systems with superheated steam flows. An advection diffusion model was implemented for predicting silica particle transport and deposition in turbulent flows. The model includes the effect of Brownian diffusion, turbulent diffusion, turbophoresis, Saffman lift force, and drag force on particle motion. Simulation results for deposition of silica particles in superheated...
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#1Aurore CarrierH-Index: 1
Last.Matteo LupiH-Index: 10
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The world energy strategy for a sustainable development promotes the use of renewable energies. Among them, middle-enthalpy geothermal energy may be used to supply heat to service industries and urban centres. However, the costs for the acquisition of high-resolution geophysical data are still high compared to the economical return of the energy eventually extracted. This study proposes a method applied to the Greater Geneva Basin, Western Switzerland–Eastern France, to calibrate the inversion o...
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#1Emmanuel Olvera-García (University of Bari)H-Index: 1
Last.Jorge Alejandro Guevara-Alday (Université du Québec)
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Abstract Investigating, from surface, deep-seated geothermal systems below hundreds to thousands of meters of thick clastic and unconsolidated sediments is always a timely theme for geothermal exploration. In this paper we describe a fieldwork and remote approach to the San Agustin del Maiz area, located in the central sector of the Trans-Mexican Volcanic Belt. Here, several geothermal manifestations are distributed in a broad basinal area, characterized by fluvio-lacustrine sediments unconforma...
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#2Yohei Tada (Kyoto University)
Last.Irwan IskandarH-Index: 4
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Abstract Recharge mechanism and water–rock interaction (WRI) along the recharge flows in a transitional geothermal system that characterize the chemical and physical properties of vapor and liquid phases, has not yet been fully understood due to complexities of fluid origin and geologic structure. To clarify the fluid origin and WRI processes in the system, this study applied hydrogen and oxygen isotope, B, Cl, and rare alkali metals analyses by considering fractionation characteristics of 18O i...
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#2Stefan FinsterleH-Index: 30
Last.Lehua Pan (LBNL: Lawrence Berkeley National Laboratory)H-Index: 23
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Abstract The capabilities to efficiently model the transport of mass and heat in geothermal reservoirs at supercritical conditions are necessary to support the efforts to explore and utilize supercritical hydrothermal systems, as well as to extend the utilization of existing geothermal fields at greater depths, where supercritical temperatures might be encountered. Similar capabilities are needed to model the flow in wells producing supercritical fluids, possibly in a coupled way with the reserv...
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#1Connor Dacquay (UM: University of Manitoba)
#2Hartmut Holländer (UM: University of Manitoba)H-Index: 7
Last.Hikari Fujii (Akita University)H-Index: 13
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Abstract Extracting heat from a sewage pipe through a typical horizontal ground heat exchanger has recently been introduced as a renewable energy alternative to reduce fossil fuel usage. This paper presents a novel design for a ground heat exchanger that extracts heat from the surrounding soil and sewage within the pipe while simultaneously being carried to a wastewater treatment plant. This research focuses on the long-term efficiency of the system under transient conditions in a cold climate. ...
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#1D. O. Schulte (Technische Universität Darmstadt)H-Index: 7
#2Daniel Arnold (Heriot-Watt University)H-Index: 6
Last.Ingo Sass (Technische Universität Darmstadt)H-Index: 13
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Abstract Geothermal energy has a high potential to contribute to a more sustainable energy system if the associated economic risks can be overcome in the design process. The development planning of deep geothermal reservoirs (over 1000 m depth) relies on computer models to forecast and then optimize system design. Optimization is easy where all the objective's (e.g. NPV) optimization parameters and, most importantly, the geology are considered as known, but this is almost always not the case. Wh...
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Abstract Faults related to the neotectonic stress regime of Eastern Anatolia permit the rise and outflow of thermal waters in the Zilan Valley located 30 km north of the Ercis, Van province. Thermal springs discharge in a volcanic terrain, often in clusters, along faults in two separate areas: In the vicinity of Taskapi (Şorkoy) and Gergili villages, which lie in the north of the area; and in the area of Hasanabdal (Doganci) thermal springs that lie to the south of the Zilan Valley. Temperatures...
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Top fields of study
Geothermal gradient
Geology
Geotechnical engineering
Geothermal energy
Geophysics