燃料

Based on the analysis of physics course of heat transfer, the mathematical model of single-phase flow in the rectangular narrow channel is proposed. And the boundary conditions are given to get the unique numerical result. The finite volume method is used to found the discrete scheme of equations. According to the flow of SIMPLER arithmetic, the computing program is developed and the correctness of program is validated.Then the program is used to solve the problem of flow and heat transfer in rectangular narrow channel.The stable two dimension velocity and temperature fields in rectangular narrow channel and plate fuel are obtained.

在明确窄缝流道及燃料板换热物理过程的基础上，建立了描述矩形窄缝内单相流动与换热问题的数学模型，并给出了合理的边值条件；然后利用有限容积法对方程进行离散，根据SIMPLER算法的流程编制了模型求解程序；在验证程序正确性的基础上，对矩形窄缝流动与换热问题进行了求解，得到了矩形窄缝流道和板状燃料元件内部温度场、速度场的二维分布。

Its original purpose is fuel, because of flammable charcoal, fire, ash less, non-sulfur content, etc., so has always been a high-quality fuel.

它的原始用途是燃料，由于木炭易燃、耐燃、灰分少、不含硫等特点，所以一直是一种优质的燃料。

At the same time, it will be encouraged to use the automobiles powered by cleaner fuels, fuel cell vehicles, electricity-powered vehicles and other types of lower emission vehicle.

鼓励使用清洁燃料车、燃料电池车、电动汽车及达到更高排放标准的车辆。

The invention provides a method for preparing a tube-shaped cathode of a direct methanol fuel cell, belonging to the fuel cell field and comprising the steps of: dispensing a single solution for gel injection molding at first, then adding a mesophase bituminous coal micro ball into the single solution and stirring evenly to obtain stable slurry, then casting the slurry into a die, preserving heat until the single solution reacts with a cross-linker completely to obtain a carbon-biscuit, after drying and sintering the biscuit in vacuum, preparing a diffusion layer and a catalyst layer on the surface by dipping process, and then coating polyester electrolyte membrane with a burette, rolling the carbon on a warm table to solidify the electrolyte membrane.

一种制备直接醇燃料电池管状阴极的方法，属于燃料电池领域。本发明首先配制凝胶注模用单体溶液，之后将中间相沥青炭微球加入到单体溶液中，搅拌均匀得到稳定的浆料，然后将浆料浇注到模具中，保温至单体与交联剂完全反应，得到炭管素坯，将素坯烘干、真空烧结后，在其表面采用浸渍工艺制备扩散层、催化剂层，然后采用滴管涂覆聚合物电解质膜，在加热台上对炭管进行滚压，使电解质膜固化。

However, with detail analysis on burning mechanism of pulverized coal and corresponding experimental research, a new design method for firing low volatile pulverized coal in a rotary kiln is put forward.

但通过对煤粉燃烧机理的详细分析和相应的实验研究，作者提出了一种新型的回转窑烧低挥发份煤的设想，这对于扩大回转窑燃料的使用范围，尤其是对于一些地方企业，能因地制宜地使用廉价的当地燃料，降低成本，提高经济效益，具有重要的实际意义。

As a function of the ratio in efficiencies Z of fuel cell and internal combustion vehicles.

图5表示用氢燃料代替汽油后从而降低的大气排污量的成本，它表示明了电池燃料机车与内燃机车燃油燃烧效率的关系。

Anode catalyst, La0.75Sr0.25Cr0.5Fe0.5O3-δ, was synthesized to construct H2S fuel cell by urea combustion method. The catalyst LSCrF was selected to carry out the polarization test.

摘 要：采用尿素-硝酸盐燃烧法制备钙钛矿阳极催化剂La0.75Sr0.25Cr0.5Fe0.5O3-δ，并将其用于以H2S为燃料气的固体氧化物燃料电池中。

A method and apparatus for increasing the propelling force of pulse engine features that the fuel nozzle of pulse explosion engine is arranged in combustion chamber to close jet tube exit, and the fuel is reversely sprayed out to generate a shock wave barrier near the jet tube for preventing the airflow from flowing out of the combustion chamber, resulting in raising the pressure in combustion chamber and in turn increasing the propelling force.

本发明公开了一种提高脉冲发动机推力的方法和装置，它是通过将脉冲爆轰发动机的燃料嘴置放在燃烧室中靠近喷管出口附近，并使燃料逆向喷出，在燃烧室内靠近喷管附近形成一道阻止气流流出燃烧室的激波，激波的作用是使燃烧室压力升高，从而的到较大的推力。同时由于本发明的结构特别的简单，所以实现非常容易，并且工作效果十分显著。

To objectively evaluate energy consumption and environment effect of the two fuels, based on city buses, oilsaving and emissionreduction effects of the application routes of the two kinds of imported natural gas were analyzed and compared with that of traditional diesel by means of life cycle assessment method.

为了客观评价两种替代燃料的能源消耗和环境影响，以城市公交客车为应用对象，采用生命周期评价的方法，分析了两种进口天然气基车用替代燃料利用路径与传统柴油相比的石油节约和排放降低效果。

Coal water slurry; diesel; assessment of life cycle; environment impact

文章对柴油机替代燃料生命周期环境影响的评价，建立了油水煤浆燃料的评价模型，通过计算分析结果表明，随着油水煤浆中煤炭含量的增加，除光化臭氧形成潜能降低以外，其它污染指标值都有增加，说明油水煤浆系统比柴油系统消耗能量要多，对全球环境有一定影响，但在局部条件下与燃油相比，燃用油水煤浆可以减少NOx等主要污染物的排放量。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。