One of the major concern for the gas sequestration/storage feasibility in natural underground formations is the assessment of the sealing efficiency of the low-permeable sequences overlying potential storage formations. The sealing efficiency is quantified via the threshold pressure and/or residual pressure difference parameters; the experimental laboratory procedures for their evaluation have been widely...
The building sector is considered strategic to reach new scenarios for a low-carbon society. Beside this awareness, in the current trend there is not a real change to achieve targets set in terms of emissions containment defined by international agreements. Through an econometric model based on Choice Experiments, the present study aims to understand the individuals’ perceptions towards energy retrofit...
In the future, we will experience a continuously increasing energy demand mostly due to the continuous growth of the world population. Today we use fossil fuels (coal, oil and gas) in order to cover the society’s basic needs. This involves significant CO2 emissions that contribute to the climate change by contributing to the increase of the global temperature. A great number of countries through international...
Aerogels are emerging as one of the most intriguing and promising groups of microporous materials, characterized by impressive properties such as low density, high surface area, high porosity and tunable surface chemistry. Fostering unique thermal and acoustic insulation features, for several decades they mainly received attention from the aerospace and building sectors. More recently, new great opportunities...
In mature oilfields, decommissioned oil and gas wells with depths reaching approximately 5000-6000 metres represent good candidate structures for geothermal heat exploitation, as they can provide useful access to subsurface geothermal energy resources. Comprehending the possibility to economically harness geothermal energy by means of coaxial WBHEs is bound to the main features of the physical model,...
Rockfall net fences are multicomponent protection devices for mitigating rockfall hazard. As passive measures, they are used to intercept and stop rock blocks propagation after their detachment from a cliff or a slope. During their design working life, net fences subjected to ageing phenomena, corrosion and impact loads, causing their efficiency loss or even their effectiveness. A multi-matricial procedure...
Geothermal Energy, being a clean and sustainable source of energy, is gaining importance worldwide due to various reasons. Geothermal power can be generated throughout the year on twenty four hour basis as it’s not much dependent on ambient temperature and weather conditions. Recently there is an increased interest in exploitation of low enthalpy geothermal resources for other applications such as geothermal space heating...
The paper provides an overview of the several scientific and technical issues and challenges to be addressed for underground storage of carbon dioxide, hydrogen and mixtures of hydrogen and natural gas. The experience gained on underground energy systems and materials is complemented by new competences to adequately respond to the new needs raised by transition from fossil fuels to renewables. The experimental...
The aim of this paper is to analyze the factors affecting hydrogen as well as Carbon Capture and Storage Technologies (“CCS”) policies with refer to countries’ upstream capacity of hydrocarbon activities. By using a panel data of 79 countries in 20 years, the interactive model will take into consideration Oil Reserves in relationship with Fossil Fuel Consumption, Blue or Green hydrogen...
Rockfall net fences and drapery meshes constitute two of the most adopted protective structural works against rockfall hazard. During their life, they are subject to ageing, corrosion, and impact loads, with a consequent loss of efficiency or even effectiveness. Due to the variability of the environment and, more in general, to external conditions, a definition of a service life, although not unique but...
In this paper, we discuss how to describe the geomechanical behavior of geological formations used for underground fluid storage through the application of the Virtual Element Method (VEM) on conforming polyhedral meshes for the solution of stress-strain equilibrium equations. Under the assumption of small deformations, the solution algorithm for an Isotropic Linear Elastic (ILE) constitutive law coupled...