Uncertainty of Measurement by Monte-Carlo Simulation and Metrological Reliability in the Evaluation of Electric Variables of PEMFC and SOFC Fuel Cells

摘要

At a time when the world worries about the global energy resources - fossil fuels reserves depletion, global warming by greenhouse gases effect - a solution to solve these problems is the development of the hydrogen economy [1]. This concept means the use of the hydrogen as a source of non-pollutant (clean), non-toxic and quasi-infinite available energy. The most studied hydrogen application is its use as a fuel cell. Fuel cell is an electrochemical device that produces electrical energy that uses the hydrogen gas as the input fuel and as a consequence of the chemical reaction of a proton with the oxygen gas yielding water as the output. There is also the generation of heat as a by-product which could be used in co-generation energy processes enhanced the overall energy efficiency.