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Showing 1 to 17 of 17 for “"Settore ING-IND/09 - Sistemi per l'Energia e L'Ambiente"”.
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Planar copper containing anode-supported solid oxide fuel cells
Planar copper-containing anode supported Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs) were produced by single step cosintering. The anode and the electrolyte were realized through water-based tape casting, the cathode being added by screen printing. A 5 mol% of Lithium oxide addition …
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Technical and economical evaluation of Power-to-Methane technologies, based on green H2 and biogenic CO2
… as hydrogen (H2) and biomethane (CH4), exploiting Renewable Energy Sources (RES) and biogenic CO2. In the frame of the Sardinia energy scenario, one of the biggest islands in Italy, the only one without a natural gas grid and, at the same time, a high availability of renewable resources, the …
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Dynamic Modelling and Optimization of Hydrogen Refuelling Stations and Their Integration with Renewable Microgrids
… achieved widespread adoption, FCEVs are increasingly regarded as a viable alternative for heavy-duty applications thanks to their short refueling times and high gravimetric energy density. However, the implementation of FCEVs requires the design of efficient hydrogen refueling stations (HRS) …
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Una metodologia per l'analisi ambientale, economica e sociale di progetti per la produzione di energia da fonte rinnovabile
… sustainability. This work aims to identify indicators for each of the aspects of sustainability by investigating the methodologies used in the literature in different fields which, starting from LCA, evolve into S-LCA, SIA using the tools of hieratic analysis, network analysis , circularity …
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Innovative energy systems and processes based on hydrogen from RES and its derivatives in the energy transition process
… and can lead to energy curtailment. By converting surplus renewable electricity into chemical energy carriers such as hydrogen and ammonia, it is possible to enhance system flexibility, support grid services, and provide carbon-free fuels for hard-to-abate sectors and power generation. In this …
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Critical Analysis of Pyrolysis and Gasification Applied to Waste Fractions with Growing Energetic Content
… towards the optimization of light packaging waste to energy alternative processes such as pyrolysis and gasification. Over more the development of an original integrated municipal solid waste scenario model that integrates the experimental results obtained in the thesis have a practical …
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Analytical solutions of the steady or unsteady heat conduction equation in industrial devices: A comparison with FEM results
… the energy efficiency requirements are becoming more and more demanding. This motivates engineers to continuously improve the efficiency of heat transfer processes. For such analysis nowadays, the common and the popular practice to infer the temperature field is now commercially available in …
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Production and Characterization of Micro-Tubular Solid Oxide Fuel Cells
… collector layer were fabricated by dip-coating technique. The fuel cell was designed according to the anode-supported configuration with a metallic coil introduced within the anode during the cell fabrication. The production of the devices through wet colloidal process required the …
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Towards sustainable biofuels production for aviation and maritime
L'abstract è presente nell'allegato / the abstract is in the attachment
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Flexibility of multi-energy systems: the role of Power-to-Gas and Power-to-Heat at the district level
L'abstract è presente nell'allegato / the abstract is in the attachment
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Diagnosi Energetica dell’Azienda Ospedaliera “G.Brotzu”
… and to provide the best quality of air conditioning. Therefore, energy efficiency measures could allow achieving important economic benefits and improving environmental impact of these types of facilities. The purpose of the research was the energy audit of the AOB (Azienda Ospedaliera Brotzu), …
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Large strain computational modeling of high strain rate phenomena in perforating gun devices by Lagrangian/Eulerian FEM simulations
… of materials and components. Theoretical, experimental and computational aspects are taken into consideration. Particular reference is made to the modeling of metallic materials, although other kinds of materials are considered as well. The work may be divided into three main parts. The first …
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La simulazione termoenergetica dinamica del sistema edificio-impianti applicata a un caso studio:l'azienda ospedaliera "G. Brotzu"
… part that involved the validation test of building energy modeling software, in order to compare calibrate numerical solution to experimental measures of energy demand and thermo-hygrometric parameters. Once installed in the Internal Medicine Department (of the AOB Hospital in Cagliari) a …
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Trattamento di Biomasse vegetali e algali finalizzato all'ottenimento di energia. Potenziali sviluppi in Sardegna
… of interest to food and agricultural land. Indeed, the cultivation of plant species for energy enables diversification of agricultural activities, the recovery of wild areas or the exploitation of land not suitable to food production, but requires the use of resources and energy, which must …
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Modelling, design and analysis of innovative thermal energy storage systems using PCM for industrial processes, heat and power generation
… to be used as a back-up for intermediate temperature applications (up to 250 °C). The work is divided in two part: the first part presents the development of numerical models of the latent heat thermal energy storage (LHTES) devices. Different models are developed by means of a 2D and 3D …
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Simulazione energetica di scenari per la produzione combinata a servizio di edifici civili in area mediterranea
Increasing regulation on greenhouse gas emissions aimed at fighting climate change has significantly boosted construction and architecture sectors. Recent European directives (2010/31/UE e 2012/27/UE) promote the reformulation of energetic planning rules and the adoption of environmental-friendly …