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澳洲代写网:PEM燃料电池中液态水分布的研究

本文采用的研究方法是一种初步的研究,因为实验是用目前的中子成像进行的。本研究使用了美国国家标准与技术研究所(NIST)的中子射线照相系统。利用中子射线照相技术对PEM燃料电池中液态水的产生进行成像(PARK et al., 2008)。像液态水这样的含氢物质在经过PEM性质的燃料电池时被中子束衰减。本研究利用平面非晶硅探测器,像素间距127 um,捕捉燃料电池内液态水中子图像。

澳洲代写网:PEM燃料电池中液态水分布的研究

通过实验观察发现,燃料电池内液态水的积累往往会减缓或降低燃料电池对负载变化条件下的动态响应。从文章中可以看出,在自然条件相同的情况下,由于细胞内液态水含量的不同,存在性能滞后(PARK et al., 2008)。此外,还确定了电池内液态水的积累取决于电池的工作温度。压力在目前的密度和流动通道下降。

澳洲代写网:PEM燃料电池中液态水分布的研究

The research method employed by this article was a primary research as experiment was conducted using the present neutron imaging. This study has used the system of neutron radiography that is present at the National Institute of Standard and Technology (NIST) in Gaithersburg, US. The neutron radiography was employed for imaging the production of the liquid water in the PEM fuel cell (PARK et al., 2008). The material of hydrogenous nature like the liquid water was attenuated by the neutron beam while it passed by an operating fuel cell of the PEM nature. The research utilized an amorphous silicon detector of flat panel with the pixel pitch of 127 um for the purpose of capturing the liquid water’s neutron image within the fuel cells.

澳洲代写网:PEM燃料电池中液态水分布的研究

It was identified from the experimental observations that the accumulation of the liquid water within the fuel cell often either slowdowns or lowers the fuel cell’s dynamic response to the conditions of changing load. It was identified from the article that the performance hysteresis was found to be present due to the varied amount of content of liquid water within the cell at the operating conditions that were identical in nature (PARK et al., 2008). Furthermore, it was established that the liquid water’s accumulation within the cell depends upon the operating temperature of the cell. The pressure declines in the present density and the flow channel.