Air fuelled zero emission road transportation: A comparative study
Air fuelled zero emission road transportation: A comparative study
复制标题
空气燃料零排放道路运输：比较研究
DOI：
10.1016/j.apenergy.2010.07.002
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发表时间：
2011-01-01
期刊：
影响因子：
11.2
通讯作者：
Tan, Chunqing
中科院分区：
文献类型：
--
作者：
Chen, Haisheng;Ding, Yulong;Tan, Chunqing
在过去的十年里，以空气为燃料的公路运输引起了人们的广泛关注。燃料（空气）可以有两种形式，压缩气体形式和低温液体形式，已经研究了基于这两种形式的空气的发动机。预计未来几年将出现空气动力公路车辆的原型。然而，关于这两种技术的优缺点一直存在争议。本文旨在从技术的角度对这两种技术进行比较。以典型小型客车发动机为例，从轴功、冷却、效率和能量密度等方面进行了分析比较。结果表明，两种燃料驱动的发动机的轴功输出和冷却随工作压力和温度的增加而增加。考虑到工作压力和温度，液态空气动力发动机的比功输出略低于压缩空气动力发动机。然而，液态空气的体积能量密度比压缩空气高得多，液态空气的冷却度也比压缩空气高得多。另一方面，压缩空气动力发动机的效率高于液体空气动力发动机，主要是因为液化厂的能耗更高。分析还表明，有效利用冷却是提高液体空气动力发动机整体效率的关键。(C) 2010 Elsevier Ltd.版权所有。
Road transportation using air as a fuel has attracted much attention over the past decade. The fuel (air) can be in two forms, compressed gas form and cryogenic liquid form and engines based on both forms of air have been investigated. Prototypes of air powered road vehicles are expected to emerge over the next few years. However, there have been debates over the advantages and disadvantages of the two technologies. This paper aims to compare the two technologies from the technological point of view. Engines for a typical small scale passenger car are used for the analyses and the comparison is based on the shaft work, coolth, efficiency and energy density. It is shown that the shaft work outputs and the coolth available to engines powered by both fuels increase with increasing working pressure and temperature. Given the working pressure and temperature, liquid air powered engines have a slightly lower specific work outputs than compressed air powered engines. The volumetric energy density of liquid air, however, is much higher than that of compressed air, and liquid air has much higher coolth than compressed air. On the other hand, the efficiency of the compressed air powered engines is higher than that of liquid air powered engines mainly because of the higher energy consumption of liquefaction plants. The analyses also suggest that an effective use of coolth be a key to improve the overall efficiency of liquid air powered engines. (C) 2010 Elsevier Ltd. All rights reserved.