Showing papers by "Umberto Desideri published in 2016"
TL;DR: In this article, the impact of three different strategies, for renewables integration and scale-up sustainability in the ammonia synthesis process, was investigated using thermochemical simulations, and the study is finalized to compare the energy efficiency and sustainability of those three strategies.
108 citations
TL;DR: In this article, the authors developed the concept of integrating an SOE and a Fischer-Tropsch process in a small plant size, which is compatible with renewables power density, based on experimental results on a Solid Oxide Cells stack operated in co-electrolysis.
85 citations
TL;DR: In this article, the potential of a power generation system based on a Solid Oxide Fuel Cells (SOFC) fueled by NH3 has been analyzed, and the results demonstrate that the ammonia fueled SOFC is more efficient than an equivalent hydrogen fueled one.
69 citations
TL;DR: In this paper, the results of an investigation on a Perkins A63544 direct injection diesel engine using water-diesel emulsions (2, 5, 8% and 10% water by volume) are reported.
65 citations
TL;DR: In this paper, the feasibility of a Biomass Integrated Gasifier Fuel Cell (B-IGFC) plant was evaluated with real wood syngas from a pilot batch gasifier.
48 citations
TL;DR: In this article, reversible solid oxide cells (ReSOCs) are used as EES in both fuel cell and electrolysis modes, where the thermal energy produced during fuel cell mode is stored as sensible or latent heat, respectively, in a high density and high specific heat material and in a phase change material (PCM) and used during electrolysis operation.
Abstract: Electrical energy storage (EES) systems allow shifting the time of electric power generation from that of consumption, and they are expected to play a major role in future electric grids where the share of intermittent renewable energy systems (RES), and especially solar and wind power plants, is planned to increase. No commercially available technology complies with all the required specifications for an efficient and reliable EES system. Reversible solid oxide cells (ReSOC) working in both fuel cell and electrolysis modes could be a cost effective and highly efficient EES, but are not yet ready for the market. In fact, using the system in fuel cell mode produces high temperature heat that can be recovered during electrolysis, when a heat source is necessary. Before ReSOCs can be used as EES systems, many problems have to be solved. This paper presents a new ReSOC concept, where the thermal energy produced during fuel cell mode is stored as sensible or latent heat, respectively, in a high density and high specific heat material and in a phase change material (PCM) and used during electrolysis operation. The study of two different storage concepts is performed using a lumped parameters ReSOC stack model coupled with a suitable balance of plant. The optimal roundtrip efficiency calculated for both of the configurations studied is not far from 70% and results from a trade-off between the stack roundtrip efficiency and the energy consumed by the auxiliary power systems.
42 citations
TL;DR: In this article, the authors analyzed three tree plantations managed at different cultivation intensities in Italy, from an extensively managed plantation (a pure oak plantation) and a semi-intensively managed plantations (walnut and poplar plantation with nurse plants), to an intensively managed olive grove.
34 citations
TL;DR: In this article, power recovery from liquid air, either with or without combustion, is studied with the Aspen HYSYS simulation software and compared in terms of roundtrip and fuel efficiencies.
29 citations
TL;DR: In this paper, an experimental investigation of a Molten carbonate fuel cell (MCFC) fueled by methane in order to predict how to reduce CO 2 emissions from the flue gas of a real power plant is presented.
28 citations
TL;DR: In this article, a methodology is proposed to estimate thermal heat losses inside compound parabolic collectors (CPC) to be used in designing and validating new collectors' concepts and materials.
24 citations
TL;DR: In this paper, a dynamic analysis on a low concentration solar power plants coupled with organic rankine cycles (ORC) was performed using a rotary volumetric expander.
TL;DR: In this article, the molar compositions at equilibrium were calculated for a minimum steam to carbon ratio for each fuel type, and a mathematical relationship between Lagrange's multipliers and carbon activity in the gas phase was deduced.
TL;DR: In this article, the authors carried out a deep study of the electrolyte evaporation in a Molten Carbonate Fuel Cell (MCFC) and by this mechanism evaluated the possibilities for inducing controlled acceleration of superimposed degradation phenomena.
TL;DR: In this article, a selection of papers submitted and presented at the 5th International Conference on Applied Energy (ICAE2013), which was held in Paris, were presented and reviewed.
Abstract: This issue of the International Journal of Green Energy includes a selection of papers submitted and presented at the 5th International Conference on Applied Energy (ICAE2013), which was held in Pr...
TL;DR: In this paper, the modeling activity on a waste heat recovery micro-generation ORC plant is presented together with the results of the application of two different load diagrams and three different control strategies.