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Compressed Hydrogen Refueling Stations
Published in Shitanshu Sapre, Kapil Pareek, Rupesh Rohan, Compressed Hydrogen in Fuel Cell Vehicles, 2022
Shitanshu Sapre, Kapil Pareek, Rupesh Rohan
The primary function of the compressor is to pressurize the low-pressure hydrogen supplied from the source of production. The lower molecular weight of hydrogen restricts the use of a centrifugal compressor commonly used for gas compression. For this, a mechanical or piston compressor and diaphragm compressor are preferred for pressurizing the hydrogen at high pressure up to 900 bar with higher volumetric efficiency.
Air and hydrogen supply systems and equipment for PEM fuel cells: a review
Published in International Journal of Green Energy, 2022
Yuanyang Zhao, Yunxia Liu, Guangbin Liu, Qichao Yang, Liansheng Li, Zhicheng Gao
A side channel blower was studied for the recirculation equipment of PEM fuel cells (Badami and Mura 2010)(Badami and Mura 2012). Its main structure is shown in Figure 12 (a). The test results show that the efficiency is less than 0.45 when the rotation speed is from 5,000 to 20,000 rpm, and the mass flow rate is from 0 to 3.5 g/s. Scroll compressors for PEM fuel cells were developed and studied by Zhang et al. (Qingqing Zhang et al. 2018a)(Qingqing Zhang et al. 2019), whose structure is shown in Figure 12 (b). The range of the rotation speed of the studied scroll compressor is 3,000–6,000 rpm. The results show that the leakage clearance has more effects on the performance of scroll compressors when the working fluid is changed from air to hydrogen. The diaphragm compressor can also be applied for the hydrogen recirculation in PEM fuel cells (Migliardini, Capasso, and Corbo 2014)(Migliardini et al. 2017). The pressure difference of the diaphragm compressor is 30–40 kPa in the references.