An Analysis of Coupled PEM Fuel Cell - Metal Hydride Hydrogen Storage Tank System
An Analysis of Coupled PEM Fuel Cell - Metal Hydride Hydrogen Storage Tank System
复制标题
耦合质子交换膜燃料电池-金属氢化物储氢罐系统分析
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
S. S. Murthy
中科院分区：
文献类型：
--
作者：
Vishal Rajpurohit;S. S. Murthy
质子交换膜燃料电池（PEMFC）和金属氢化物储氢罐的热耦合是一个有趣的可能性。虽然从金属氧化物中解吸氢是一个吸热过程，但燃料电池会产生大量的废热。因此，可以设想通过利用金属氢化物存储装置处的燃料电池热输出进行氢解吸的自我维持系统。此外，金属氢化物装置还可以用作热压缩机以在更高的压力下输送氢气，这可以改善燃料电池的性能。由于氢从金属氢化物床解吸的速率与燃料电池中氢的消耗之间的差异，需要在两个部件之间引入界面。在本文研究的情况下，接口是一个气体缓冲罐连同一个控制阀提供氢气在预设的压力和变化的流量所需的燃料电池。针对不同的运行条件和负载要求，对这种系统进行了分析。
Thermal coupling of PEM fuel cells (PEMFC) and metal hydride hydrogen storage tanks is an interesting possibility. While, hydrogen desorption from metal hydrides is an endothermic process, the fuel cell generates considerable amount of waste heat to be rejected. Hence one can visualize a selfsustainable system by utilizing th e fuel cell heat output at the metal hydride storage device for hydrogen desorption. Moreover, the metal hydride device can also act as a thermal compressor to deliver hydrogen at higher pressures which can improve the performance of the fuel cell. Due to the difference between the rates of desorption of hydrogen from the metal hydride bed and consumption of hydrogen in the fuel cell, an interface between the two components needs to be introduced. In the case studied in this paper, the interface is a gas buffer tank together with a control valve to deliver hydrogen at preset pressure and varying flow rate as demanded by the fuel cell. Such a system has been analyzed for different operating conditions and load requirements.