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2022-09-07

氢燃料电池有哪些特点

燃料电池是将燃料的电化学能转化为电能的能量转换装置。它是一种类似于电池的电化学发电装置，因此被称为燃料电池。相应的以氢为燃料的燃料电池是氢燃料电池。可以理解为水电解成氢气和氧气的逆反应。因此反应过程既清洁。因为它不受传统发动机使用卡诺循环约42%的热效率限制。氢燃料电池的效率可以轻松达到60%以上。氢燃料电池技术可提供高密度能量和良好的能源效率。按重量计算，氢在所有普通燃料中具有高的能量含量。高压气态和液态氢的重量能量密度约为柴油和LNG的3倍（约120 MJ/kg），体积能量密度与天然气相近。氢燃料电池比许多其他能源更有效，包括许多绿色能源解决方案。这种燃料效率允许每磅燃料产生更多的能量。例如，传统的基于燃烧的发电厂以 33-35％ 的效率发电，而氢燃料电池的发电效率高达 65％。汽车也是如此，其中氢燃料电池使用了 40-60％ 的燃料能量，同时还减少了 50％ 的燃料消耗。氢燃料电池技

2022-08-30

氢燃料电池介绍

什么是氢燃料电池燃料电池是将燃料的电化学能转化为电能的能量转换装置。它是一种类似于电池的电化学发电装置，因此被称为燃料电池。相应的以氢为燃料的燃料电池是氢燃料电池。可以理解为水电解成氢气和氧气的逆反应。因此反应过程既清洁。因为它不受传统发动机使用卡诺循环约42%的热效率限制。氢燃料电池的效率可以轻松达到60%以上。氢燃料电池不是像火箭一样通过氢氧燃烧的剧烈反应产生动能，而是通过催化装置释放氢中的吉布斯自由能。例如，石墨和金刚石都是碳的形式。但是形成钻石需要高温和高压。因此，这种形态变换代表了不同的吉布斯自由能。氢燃料电池的工作原理是通过燃料电池正极中的催化剂（铂）将氢气分解成电子和氢离子（质子）。质子通过质子交换膜到达负极并与氧气反应变成水和热。相应的电子通过外电路从正极流向负极以发电。氢燃料电池商业化的挑战之一是成本控制。目前燃料电池汽车的成本约为普通汽车的五倍。它的核心成分称为质子交换

2022-07-29

管板双过程超临界水冷电堆的制造方法是什么？

超临界水冷电堆（SCWR）是一种以水为冷却剂，出水状态高于临界点（374°C，22.1mpa）的反应堆。由于运行参数高，并考虑到现有材料和制造水平的限制，超临界水冷电堆大多设计为多过程结构。欧盟超临界水冷电堆hplwr设计为三过程结构，主要由反应堆压力容器、吊篮组件、下混合室、出口蒸汽室、出口喷嘴结构、控制棒导向组件、燃料组件等部分组成。

2022-07-20

什么是石墨水冷电堆？

石墨水冷电堆是一种热中子反应堆，石墨为慢化剂，水为冷却剂。在工业发展的初期，石墨水冷电堆主要用于生产武器装药钚、氖等。这种反应堆通常使用天然铀金属部件作为燃料。反应堆中天然铀中的铀的235吸收中子产生核裂变反应，释放中子和能量。其中一些中子用于维持链式核裂变反应，一些被天然铀中的铀238吸收，并转化为钚239和其他钚同位素。核纯石墨砌体用作结构石墨水冷电堆的慢化剂和反射器。

2022-07-12

水冷电堆和风冷电堆有什么区别？

水冷电堆和风冷电堆有什么区别？ 现有大功率金属堆需通过大量电极板相互叠加而成，但因单片电极板较为薄，因此电极板易变形，造成金属堆损坏。那么，水冷电堆和风冷电堆有什么区别？

2022-06-29

水冷电堆有哪些需要注意的事项

水冷电堆有哪些需要注意的事项？ 电堆是氢发生电化学反应的地方，是燃料电池基本、关键的部件。电对氢能经济的重要性相当于信息产业中中央处理器(CPU)的地位。那么，水冷电堆有哪些需要注意的事项？

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