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Platinum is increasingly used intentionally and non-intentionally in several applications. This has raised the concern about its future resources, emissions and losses during its life cycle. On the one hand, increasing platinum emissions might affect human health. On the other hand, the...
Persistent link: https://www.econbiz.de/10010736938
In this paper a perturbation approach to the minimization of hydrogen consumption in polymer electrolyte membrane fuel cell systems is introduced. The control technique is mainly based on the minimization of the current produced by the fuel cell by means of the Perturb and Observe method. The...
Persistent link: https://www.econbiz.de/10010743645
Flow maldistribution through the cell package affects the efficiency of the fuel cells, thus limiting the reliability and the diffusion of such a technology. This subject is a key-point in the progress of the fuel cells, so deserving the greatest attention and the most thorough research. This...
Persistent link: https://www.econbiz.de/10010789882
A large number of stand-alone power systems that are based on fossil fuel or renewable energy (RE) based, are installed all over Europe. Such systems, often comprising photovoltaics (PV) and/or diesel generators provide power to communities or technical installations, which do not have access to...
Persistent link: https://www.econbiz.de/10010803755
The need for alternative and renewable transportation fuels continues to be high on the nation's agenda. Substituting these fuels for petroleum can reduce dependence on foreign oil imports, improve air quality, and mitigate greenhouse gases. Renewable fuels offer the same advantages as...
Persistent link: https://www.econbiz.de/10010803799
This paper describes dynamic modeling and simulation results of a small wind–fuel cell hybrid energy system. The system consists of a 400 W wind turbine, a proton exchange membrane fuel cell (PEMFC), ultracapacitors, an electrolyzer, and a power converter. The output fluctuation of the wind...
Persistent link: https://www.econbiz.de/10010804529
The distributed generation (DG) of combined heat and power (CHP) for commercial buildings is gaining increased interest ….e., operate) an integrated CHP system. Existing research efforts to determine a minimum-cost-system design and dispatch do not …-design hardware performance characteristics for CHP and energy storage that are simplified or not considered in other models …
Persistent link: https://www.econbiz.de/10010602987