1,721,443 research outputs found
Sensitivity analysis of stack power uncertainty in a PEMFC-based powertrain for aircraft application
Full text linkExperimental data concerning the reliability of fuel cell systems (FCS) in aviation are still unavailable to technical community, while assessing reliability of a component or a whole system represents a fundamental aspect that allows a new technology to be introduced in a high safety system such as an aircraft. The main aim of this paper is to show a method to estimate the reliability of an aircraft power system based on a hydrogen fuel cell, mainly for design purposes. The method is based on a high-order adaptive response surface technique, coupled with a dynamic model of the aircraft power system, and it is applied to the failure event represented by an incorrect power supply due to the failure of sensors of the control system of the powertrain. The most important advantage of the proposed method is the low computational effort it requires. The result is a ranking of the most critical sensors to be considered in the design phase of the power system and demonstrate that accurate temperature sensors and sensor calibration are of dramatic importance for the control of the stack power, in case of powertrain based on PEM fuel cell systems.Fil: Correa Perelmuter, Gabriel. Universidad Nacional de Catamarca. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Catamarca. Universidad Nacional de Catamarca. Centro de Investigaciones y Transferencia de Catamarca; ArgentinaFil: Borello, Fabio. Politecnico di Torino; ItaliaFil: Santarelli, Massimo. Politecnico di Torino; Itali
DEMOSOFC project to install first European plant to produce clean energy from waste water
No full textThe new DEMOSOFC project is focused on the installation of the first
European industrial solid oxide fuel cell system able to convert sludge from the
waste water treatment process into clean and valuable energy. The project will
install the SOFC system, with its inherently high efficiency conversion, in a
waste water treatment plant in Collegno, near Turin
Computer experimental analysis of a tubular SOFC CHP to evaluate factors effects on performances and S/C ratio
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Hydrogen as an energy carrier in stand-alone applications based on PV and PV-micro-hydro systems
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Feeding fuel cells with coal and biomass gasification: technical and economic evaluation
No full textCarbon exergy tax: a thermo-economic method to increase the efficient use of exergy resources
No full textThermodynamic Analysis of Beam down Solar Gas Turbine Power Plant equipped with Concentrating Receiver System
Full text linkAbstract. Thermodynamic analysis of a closed cycle, solar powered Brayton gas turbine power plant with Concentrating Receiver system has been studied. A Brayton cycle is simpler than a Rankine cycle and has an advantage where the water is scarce. With the normal Brayton cycle a Concentrating Receiver System has been analysed which has a dependence on field density and optical system. This study presents a method of optimization of design parameter, such as the receiver working temperature and the heliostats density. This method aims at maximizing the overall efficiency of the three major subsystem that constitute the entire plant , namely, the heliostat field and the tower, the receiver and the power block. The results of the optimization process are shown and analysed
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