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It is of significant importance to simultaneously shorten the start-up time and enhance the electricity generation performance for practical application of microbial fuel cell (MFC). In this paper, the polydiallyldimethylammonium chloride (PDDA) modified carbon felt (PDDA-CF) electrode was prepared and used as the anode of PDDA-MFC. The anode significantly enhanced the start-up speed and electricity...
A sensor-less methanol concentration control system based on feedback from the stack temperature (SLCCF) has been developed. The SLCCF algorithm is embedded into an in-house LabVIEW program that has been developed to control the methanol concentration in the feed of direct methanol fuel cells (DMFCs). This control method utilizes the close correlation between the stack temperature and the methanol...
A measurement about 4 minutes quick start-up is done on a kind of S-band high average power klystron. The test requires that the filament warms up only 4 minutes, and then the klystron starts up immediately. The results show that the klystron can work steadily, but in the 5th minute the output power is about 93 % of the full power and the beam average current is about 97 % of the full current. Then...
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