Publication
Geothermal Energy
Related publications (32)
Single-Well Pore Pressure Preconditioning for Enhanced Geothermal System Stimulation
Marie Estelle Solange Violay, Mathias Alexandre David Lebihain, Barnaby Padraig Fryer
The stress state is an important parameter in terms of both earthquake nucleation and rupture. Here, a new stimulation technique is proposed for Enhanced Geothermal Systems (EGSs), which have previously been burdened with a number of high-profile incidence ...
AMER GEOPHYSICAL UNION2023Fluid flow through microcracked and fractured granitic reservoirs
Marie Estelle Solange Violay, Lucille Jocelyne Nadine Carbillet, Michael Heap
The permeability of crustal rocks and rock-masses dictates the efficiency of hydrothermal circulation and therefore the productivity of geothermal resources. In this study, we find by monitoring P-wave velocity that thermal microcracking in Lanhélin granit ...
2023Revisiting the Pohang Induced Earthquake
The failure of the Enhanced Geothermal System project of Pohang is a valuable case for understanding better the complex mechanisms at play, as such understanding is crucial to the development of geothermal energy. We summarized analysis of the available da ...
2021Machine learning enhancement of thermal response tests for geothermal potential evaluations at site and regional scales
Lyesse Laloui, Alessandro Francesco Rotta Loria
This study explores and validates a machine learning approach for the practical, effective, and precise prediction of the thermo-physical characteristics that are essential for the analysis and design of shallow geothermal systems, including borehole heat ...
2021Experimental and numerical investigation of the thermo-mechanical behaviour of an energy sheet pile wall
Lyesse Laloui, Alessandro Francesco Rotta Loria, Marianna Adinolfi
One-of-a-kind experimental and numerical investigation is provided in this paper about energy sheet pile walls: earth retaining structures that embed heat exchanger probes within piles for the exploitation of shallow geothermal energy. The study resorts to ...
ELSEVIER2021District scale influence of waste heat on the subsurface conditions: a numerical investigation for Chicago
Since the 20th century, the rate of urbanization in the world has been increasing exponentially and will reach 68% in 2050. In parallel with this expansion, the size and activities of cities are also greatly growing. As a result, cities are depleting avail ...
2020Extension of Winkler’s solution to non-isothermal conditions for capturing the behaviour of plane geostructures subjected to thermal and mechanical actions
Lyesse Laloui, Qazim Llabjani, Alessandro Francesco Rotta Loria, Jacopo Zannin
Before this study, no analytical models had been made available for describing the behaviour of plane geostructures subjected to thermal and mechanical actions. This knowledge gap notably represented a limitation for investigations about the behaviour of s ...
2020Experimental and numerical investigation of the thermo-mechanical behavior of an energy sheet pile wall
Lyesse Laloui, Alessandro Francesco Rotta Loria
One-of-a-kind experimental and numerical investigation is provided in this paper about energy sheet pile walls: earth retaining structures that embed heat exchanger probes within piles for the exploitation of shallow geothermal energy. The study resorts to ...
2020Experimental studies of hydro-mechanical couplings in Enhanced Geothermal Reservoirs
Enhanced Geothermal Systems (EGS) allow for worldwide geothermal electricity production. They target deep (3-5 km), fractured rock reservoirs whose permeability is artificially increased through hydraulic stimulations (fluid injections). The injections mod ...
EPFL2020Long-term performance and life cycle assessment of energy piles in three different climatic conditions
Lyesse Laloui, Alessio Ferrari, Melis Sütman, Gianluca Speranza
The main purpose behind the use of energy piles is to enable the exploitation of geothermal energy for meeting the heating/cooling demands of buildings in an efficient and environment-friendly manner. However, the long-term performance of energy piles in d ...
2019