查询词典 combustion

On the basis of CWS(Coal-water Slurry) combustion theory, The dissertation focuses on experiment and CFD calculation about combustion, ash deposition and field application on steam generator.

在水煤浆燃烧理论的基础上，本文针对水煤浆在注汽锅炉的炉内燃烧，灰沉积和现场应用几个方面进行了试验，计算。

The fire is always the significant disaster, The study is making a strong fire combustion chamber and make use of PLC（Programmable Logic-Controller）to control need of air and fuel gas. It do simulate test of fire in advance actual situation. And it monitored thermograph inside fire combustion chamber, compare whit fire thermal current analyze by computer. It result can understand about discrepancy between actual and simulate fire. So, the study build fire simulator can train fire fighter and appraise cause of fire, and the data of discrepancy between actual and simulate fire can take as references of fire situation.

火灾是最频繁的重大灾害，本研究建立一个实体坚固的燃烧室，运用逻辑可程式控制器，控制燃烧所需要的空气量、瓦斯量等，在预先设定的情境下，进行实际火场的模拟测试，另在火场的温度监测下，可与电脑模拟热流场分析做比对，以了解火场实际与模拟差异性；因此，除开发火灾模拟器之外，亦可推广作为火场救灾训练及火灾事故原因鉴定，另热流场分析比对数据，也可作为火场情境之研究参考使用。

The structure of supersonic combustion flow field was analyzed. The effects of temperature and equivalent ratio of supersonic premixed flow on the structure of supersonic combustion flow field, ignition and flame propagation were studied.

采用普通的纹影系统实现了高温超声速燃烧流场显示；对超声速燃烧流场结构作出了分析；研究了超声速预混可燃气的温度以及当量比对超声速燃烧流场结构、点火与火焰传播特性的影响。

Based on the mass action law and basic combustion theory the authors propose the application of a relatively high pulverized coal concentration for use in a pulverized coal-fired boiler in order to enhance the ignition zone flame temperature, thus achieving a more stable combustion.

根据质量作用定律及燃烧基本理论。本文提出采用较高的煤粉锅炉入炉的煤粉浓度以便提高着火区火焰温度，从而使燃烧更加稳定。

The variety of the oxygen concentration will make the great influence to the coal combustion. The enhance of the oxygen concentration is able to reduce ignition heat 、 ignition-temperature and increase reaction velocity 、 flame temperature which will promote combustion completely.

氧气浓度的变化对煤粉燃烧产生很大的影响，增加氧气浓度会降低着火热和着火温度，增加反应速度、提高火焰温度、促进完全燃烧。

In the third chapter of this dissertation, based on the physical and chemical properties of hydrogen and the combustion characteristics of hydrogen, the quasi-dimension combustion calculation model of hydrogen-fueled engine is set up through analyzing the characteristics of turbulence flame and chemical reaction kinetic of hydrogen-air mixture.

但是，对氢燃料发动机燃烧模型的研究尚处于空白。

Secondly the estimation of power spectrum of flame signal was made, and it was found to be able to reflect the stability of combustion state, which meaned that when the results of estimation of power spectrum showed that the frequency range in which the signal had certain value of energy became wider, and the peak value became larger, the extent of combustion stability became worse.

本文首次将色度学的原理引入到煤粉火焰颜色定量研究中来，试验研究发现，火焰的色度坐标可以反映火焰中风煤配比的变化：当色度坐标变小时，对应于风煤比变大，并且色度坐标对贫燃火焰反应敏感。据此可用来监视燃烧火焰中风煤配比是否失调。

For coal-fired boilers: coal rate of 8 ~ 20%; clear coking coal-fired system 50 ~ 95%; to reduce sulfur emissions 20 ~ 30%; to reduce harmful gas emissions 50 to 95 percent; firepower improve about 20%; lower value of about 14% of spontaneous combustion, and life brought about by the extension of the boiler to reduce the repair cycle of the furnace, flue, heating surface, such as equipment maintenance Qing Jiao role in enhancing the stability of combustion, reducing harmful gas emissions and other benefits.

对于燃煤锅炉：节煤率为8～20％；清除燃煤系统结焦50～95％；降低硫排放20～30％；降低有害气体排放50～95％；火力提高20％左右；降低自燃值14％左右，并带来延长锅炉使用寿命，减少维修周期，对炉膛、烟道、受热面等设备具有清焦保养作用，提高燃烧的稳定性，减少有害气体的排放等效益。

Air for combustion is drawn into the battery heating system,where it is heated by passing through flues in which gas was earlier burnt, then the preheated air is introduced into individual heating flues to support combustion of gas provided through jets.

燃烧所需的空气被引入焦化设备的加热系统，并使其通过其中已有燃烧着的煤气的烟道而被加热。然后，预热过的空气被导入各个加热烟道以维持由入口喷出的煤气的燃烧。

Based on it,three dimensional numerical simulation of Natural Gas Rebuming is carried out.With the typical tangentially fired boilers in China as research object,it is set up that the pulverized coal combustion models and the NOx models.Through CFD method,the combustion process is simulated.All of these will promote the engineering applications of fuel reburning technology.

在此基础上，对燃煤锅炉的天然气再燃过程进行了系统的三维数值模拟，以我国典型的四角切圆煤粉锅炉为研究对象，建立了煤粉扩散燃烧和污染物NOx生成-还原模型，采用计算流体力学方法，模拟其燃烧过程，促进了再燃低NOx技术应用的推广。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。