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Mass production of micro-reformers raises various problems still unsolved, such as the evaluation of their internal temperature and flow rate. Such issues influence the efficiency of micro reformers. To our knowledge, no investigation has elucidated the internal operation of micro reformers. Hence, this work fabricates micro flow sensors on a flexible substrate using the micro-electro-mechanical systems...
This investigation presents a novel flexible measurement device for use in proton exchange membrane fuel cells (PEMFCs). This device can measure temperature and the humidity distribution with in a PEMFC. This device has three pieces, each with several sensors, installed in the upstream, midstream and downstream parts of a PEMFC. These sensors are inserted separately above the flow channels. When the...
Fuel cells will be applied extensively in the future as renewable energy sources, explaining why a considerable amount of research has addressed this topic. However, among the various problems encountered in the mass production of fuel cells that have yet to be solved include those associated with the bipolar plate, flow channel, catalyst, membrane electrode assembly (MEA), gas diffusion layer (GDL)...
The fuel cell has the potential to become an indispensable source of electric power. However, some problems have not yet been resolved. Measuring the temperature and humidity inside the fuel cells is currently difficult. Accordingly, in this study, array micro sensors are fabricated within the fuel cell, in which the temperature and humidity distributions are measured. The substrate of the bipolar...
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