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A potential solution to reduce greenhouse gas (GHG) emissions in the transport sector is the use of alternative fuel vehicles (AFV). As global GHG emission standards have been in place for passenger cars for several years, infrastructure modelling for new AFV is an established topic. However, as the regulatory focus shifts towards heavy-duty vehicles (HDV), the market diffusion of AFV-HDV will increase as will planning the relevant AFV infrastructure for HDV. Existing modelling approaches need to be adapted, because the energy demand per individual refill increases significantly for HDV and there are regulatory as well as technical limitations for alternative fuel station (AFS) capacities at the same time. While the current research takes capacity restrictions for single stations into account, capacity limits for locations (i.e. nodes) – the places where refuelling stations are built such as highway entries, exits or intersections – are not yet considered. We extend existing models in this respect and introduce an optimal development for AFS considering (station) location capacity restrictions. The proposed method is applied to a case study of a potential fuel cell heavy-duty vehicle AFS network. We find that the location capacity limit has a major impact on the number of stations required, station utilization and station portfolio variety. 相似文献
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Taek S. Jang Hang S. Choi Takeshi Kinoshita 《Journal of Marine Science and Technology》2000,5(4):181-188
This paper illustrates how to estimate a wave source generating a wave system, including local waves, with the assumption
of linear dispersive waves of two dimensions. The estimation of wave source is realized by using an inverse problem. Unfortunately,
the inverse problem is ill-posed in the sense of stability, since the wave source information included in local waves diminishes
as the distance from the wave source increases. In the area of applied mathematics, there are well-developed methods to tackle
ill-posed problems, which are called regularizations. In this paper, three different regularizations which are well known
in applied mathematics are introduced and investigated to learn whether they are applicable to the present problem of the
estimation of wave source. From the numerical experiments, it is shown that the estimation is realized by the regularizations
introduced in this study, so that they can be applied to the determination of a wave source generating a wave system including
local waves.
Received: June 6, 2000 / Accepted: February 7, 2001 相似文献
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对铁路系统常见的11类43种型号计187台固定性声源进行了测定,噪声级为83.0-131.1dB(A),线性声功率级为89.4-138.6dB。在多数固定性怕源呈中高频特性。 相似文献
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A high performance liquid chromatographic method was developed and validated for the quantitative determination of catechin in rat plasma and its pharmacokinetic study after intragastric administration... 相似文献
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以阜新县南卧线公官营子大桥桥位设计为例,分析、探讨了桥位选择、水文计算及桥孔净长在确定时应注意的一些问题. 相似文献
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介绍了径向剃齿方法及其技术参数的确定。该方法加工效率高、成本低、调整方便、加工精度高,不仅应用于传统的热前精加工,也应用到齿轮热后精加工。克服了热处理变形难于控制的缺点,达到令人满意的效果。 相似文献
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国内外水泥路面板底脱空判别方法研究 总被引:1,自引:0,他引:1
文章针对目前水泥混凝土板底脱空判别方法的研究尚不完善的实际,介绍国内外的五大类水泥路面板底脱空判别方法,指出了各种评定方法的优缺点,为公路工程人员在判定水泥板底脱空时提供借鉴。 相似文献