Showing papers in "Geothermics in 2019"

TL;DR: In this paper, two different types of thermal cycling treatments (slow heating followed by slow cooling or rapid quenching) were carried out on the granite samples in the present research.

TL;DR: In this article, the simulations of different configurations of combined solar evacuated tubular collector with a ground source heat pump system to meet the heating, cooling and hot water demands of a house in Tabriz were presented.

TL;DR: In this paper, the authors present a review of methods to determine the effective thermal conductivities of different rock-soil types containing various substances, including porosity, water content, material construction and etc.

TL;DR: In this paper, a new translation procedure is developed for determining velocity dependency of the maximum retention function from laboratory coreflood tests with varying ionic strength, and the analytical model along with the obtained laboratory data allows successful matching of the well discharge history (Salamander geothermal field, Australia).

TL;DR: In this paper, the status of two-decade geothermal energy development in Iran is summarized and the benefits of the geothermal developments in National Development Plan (NDP) are analyzed.

TL;DR: The use of geothermal energy is expected to grow rapidly over the next several decades at many places in the world, since geothermal resources are abundant, and because this renewable energy option is both a low-carbon and non-intermittent technology.

TL;DR: In this article, the correlation of heat flow measurements, recent thermal events and tectonic-geological setting is used to define 11 geothermal provinces that may serve as guide to identify areas with geothermal potential for exploitation/utilization of high, medium and lowenthalpy resources, based on geothermal play definition.

TL;DR: In this article, the feasibility of hydraulic fracturing on hot dry rock (HDR) has been studied and two schemes were utilized: gas fracturing with and without liquid nitrogen (LN) (−196°C) treatment.

TL;DR: Rinaldi et al. as mentioned in this paper analyzed a deep hydraulic stimulation of a fracture zone that was conducted as part of the classical Fenton Hill Hot Dry Rock Program in the 1970s and demonstrated that injection-induced shear reactivation (or hydroshearing) could have occurred simultaneously with seismic events of magnitudes lower than what can be felt by humans.

TL;DR: In this article, a method to couple Thermal-Hydraulic-Mechanical (THM) with Chemical (C) processes is presented, capable of capturing the aperture closure under in situ stresses during heat withdrawal from an Enhanced Geothermal System (EGS).

TL;DR: In this paper, uncertainty quantification techniques that are applicable to geothermal exploration are reviewed and a dialogue about which geothermal uncertainties should receive the most attention and which uncertainty analysis methods could provide the greatest benefit for the advancement of the geothermal energy industry.

TL;DR: In this paper, a thermodynamic assessment of a cryogenic energy storage unit integrated to a single-flash geothermal power plant is performed and the effect of geothermal source temperature on the system performance is investigated.

TL;DR: A comprehensive review of the literature suggests that a standalone EAHE system can not cater the requirements of thermal loads entirely and therefore has not grown much popular and still vying for commercial/ industrial applications, worldwide as mentioned in this paper.

TL;DR: In this article, an adaptive neuro-fuzzy inference system (ANFIS) optimized with particle swarm optimization (PSO) algorithm and multilayer perceptron neural network optimized with PSO algorithm (MLP-PSO), is proposed for modeling the geothermal organic Rankin cycle (GORC) equipped with solar thermal unit.

TL;DR: In this paper, a unique water impregnation system is presented to maintain different soil moisture content levels in the close vicinity of EAPHE pipe and its influence on thermal performance and pipe length required for certain temperature rise in winter season have been determined.

TL;DR: In this article, a mathematical model was developed based on ANSYS fluent to analyze the thermal performance of the ground heat exchangers (GHEs) and the model was validated against the experimental data, which showed that the parallel configuration of the GHEs achieved a better heating performance when the mass flow rate was 2.58 kg·s−1, as compared to that of the series configuration.

TL;DR: In this paper, the viability of a newly PV cooling system based on integrating PV panel with a buried heat exchanger (BHE) has been experimentally investigated, which can effectively regulate the operating temperature and consequently improve the PV electrical conversion efficiency.

TL;DR: In this paper, deformation experiments are combined with structural assessments to provide reservoir-scale wet and dry strength and elastic modulus profiles for the Buntsandstein at Soultz-sous-Forets (France).

TL;DR: In this article, the influence of heating followed by cooling on the alteration of the microstructural properties of Harcourt granite was comprehensively investigated using X-ray computed tomography (CT) imaging and three-dimensional image reconstruction and analysis.

TL;DR: In this article, the effect of different burial depth and thermal conductivity of ground on thermal performance of HAGHE under transient conditions has been analyzed, showing that the transient thermal performance is independent from the thermal conductivities of the ground but is dependent on burial depth.

TL;DR: In this paper, the progress of the wear of polycrystalline diamond compact (PDC) cutters was quantitatively observed and was found to be associated with some of the indexes of rock abrasivity.

TL;DR: In this paper, the thermal and hydrodynamic performance of the coaxial borehole heat exchanger (CBHE) with different diameters ratio, during heat injection into the ground are investigated.

TL;DR: In this paper, a fully coupled thermo-poroelastic finite element model is developed and used to describe the interaction between fluid flow, rock deformation, and heat transfer within the fractured rock.

TL;DR: In this article, a 3D full-scale numerical simulation model combining the heat transfer processes inside and outside the U-bend pipe was established and verified for the intermittent operation.

TL;DR: In this paper, four geothermal energy utilization scenarios are modelled, analyzed and compared, and the environmental effect of producing electricity and heat in the proposed system shows 696,200 tons of CO2 emission reduced compared to the using fossil fuel power plants and heating system.

TL;DR: In this paper, the energy conservation and mass fluid continuity equations derived from hydrothermal analysis of a partially saturated soil medium are considered in cylindrical coordinate system, and an analytical solution for the non-homogeneous system surrounding a heat source in unsaturated porous media is developed using Green's function.

TL;DR: In this paper, a 3D unsteady-state multiscale model considering fluid flow and heat transfer processes of the borehole and reservoir is established, and the model is verified by field data and an analytical solution respectively in various computational regions.

TL;DR: In this article, the most effective scale inhibition applications in different type geothermal power plants in Western Anatolia were studied, based on water-dominated reservoirs, where water-rock interaction can be inferred and possible scale types may be predicted through water-modeling programs.

TL;DR: In this article, the authors investigated the effect of fracture morphology on convective heat transfer between fracture surface and flowing fluid and found that a rough surface enhances the heat transfer intensity compared with a smooth fracture.

TL;DR: In this paper, the authors investigated thermal anomalies in Tuzla geothermal region using daytime and nighttime TIR data with reference to Land Surface Temperature (LST) and Radiative Heat Flux (RHF).