氢气做燃料的火车

Imagine a nearly silent train that glides along its tracks emitting nothing more toxic than water. That train is now real. In March, Germany conducted successful tests of the world's first "Hydrail" - a hydrogen powered, zero-emission train. The Hydrail uses the same equipment as a diesel train but substitutes hydrogen as its fuel source. Large fuel cells sitting on top of the train combine hydrogen and oxygen to generate electricity, which is then transferred to lithium ion batteries. Energy that is not immediately used can be stored for later use, increasing fuel efficiency. The train's only emissions are steam and water, resulting in minimal impact to the environment.想象一下，一辆火车消无声息地沿着铁轨运行，排放物中的有毒物质不过是水。这种火车是真实存在的。3月份，德国成功测试了世界上第一辆“氢铁”，这是一种零排放的氢气动力火车。氢铁使用的设备与柴油火车相同，但以氢气取代柴油作为其燃料来源。火车顶部安装的大型燃料电池将氢气与氧气结合产生电能，随后电能被转移到锂离子电池中。没有立即使用的能量将被储存起来，以备后续使用，这提高了能源效率。氢铁的唯一排放物是水蒸汽和水，对环境造成的影响极小。