天然气汽车储气方式的技术经济性分析

天然气可用液化，压缩和吸附三种方式来存储。对于车用天然气而言，液化方法实用性有限。而压缩天然气需要高压及昂贵的多级压缩设施，同时压缩天然气（CNG）加气站高昂的造价也限制了CNG汽车进入北美市场。实验室水平的吸附式天然气（ANG）储气只需用CNG约1／6的压力即可达到其3／4的体积能量存储密度。目前，探寻一种新的，更适合车用的吸附剂以进一步提高ANG存储的体积能量密度并降低成本的研究已成为一个十分活跃的研究领域。针对天然气储气方式的经济性进行了探讨，比较了吸附，液化及压缩等方法的存储数据，同时提出了一些建议。

Economic Analysis of Storage Systems of Natural Gas Vehicle

Natural gas may be stored by liquefaction,compression,or adsorption. For use as a transportation fuel, liquefaction is limited by practical difficulties and compression requires high pressure and an expensive multi-stages compression facility. The high cost of fueling station of CNG is a major obstacle to growth of CNGVs in the vehicle market of north America. The volumetric storage density of ANG can be 3/4 of CNG at 1/6 the gas pressure in laboratory research. The search for a suitable porous material in terms of further improving ANG storage volumetric energy density and lowering the adsorbent cost is currently an active area of research. This paper addresses the question of economy of the storage technologies for natural gas. Comparisons are made between storage system for adsorbent, liquefied and compressed natural gas as well as a couple of proposals are made.