着火时间
- 网络ignition time
![着火时间](../cache/1422700.jpg)
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计算结果表明,在某些温度范围内,H2O、O、H、OH和NO对着火时间有很大影响。
The results indicate that the presence of H2 , NO , O , H and OH can have significant effect on ignition time within certain mixture temperature .
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在实验条件下,着火时间随着流速的增加先减少后增加,着火温度随着气体流量的增加而增加。
Ignition time first decreases and increases with the increasing of gas flux while the ignition temperature always increases .
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但HCCI燃烧存在运转范围窄、着火时间和放热率不好控制等缺点,具体实施上还有许多困难。
The control of auto-ignition time and heat release rate is the most difficult technical question in realizing HCCI combustion .
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炉膛温度对扁球状型煤着火时间影响的实验研究
Experimental Study on Influence of Furnace Temperature on Ignition Delay Time of Briquette
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结果表明,随着辐射热能流率的增加,着火时间缩短,着火温度降低;
The ignition temperature and ignition delay time decreased with the increasing radiant heat flux .
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线性热流下可燃物着火时间的积分法预测
Predicting the Ignition Time of Combustibles Exposed to a Linear Heat Flux via an Integral Method
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在突发的火灾过程中,可燃性固体材料的着火时间和热解特性是非常关键的参数。
The pyrolysis and ignition of combustible materials are important processes taking place in an unwanted fire .
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当其他条件确定以后,着火时间和燃烬时间随流化床温度的变化而平滑变化。
When the enviroment condition is defined , the ignition and burnout time has a smooth shift with initial bed temperature .
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在可模拟链条炉中燃烧过程的热态实验台上,研究了块粒型煤的着火时间。
The ignition delay time was studied on the hot position bench that could stimulate combustion process of traveling grate furnace .
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结果表明该模拟能准确预测着火时间,并能合理预测缸内压力峰值和NO浓度变化趋势。
The results showed that the simulation could accurately predict the start of combustion and reasonably estimate the peak cylinder pressure and concentration of NOx emission .
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柴油喷射提前角决定了混合燃烧系统的着火时间,对混合燃烧系统的性能尤其是工作粗暴性的影响极大。
The diesel injection timing has a very important effect on the hybrid combustion engine ( especially on knock ), because it determines the ignition time .
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在木纹方向与作用方向呈π/4夹角时,着火延迟时间最短。
When their included angle is π / 4 , the ignition delay time is the shortest .
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挂滴法的实验结果与凝固模型较接近,水分的加入使液滴表面温度、燃料浓度明显下降,从而使着火延迟时间变长。
The temperature and fuel concentration on the surface decline by adding water in fuel and consequently prolong the ignition delay .
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同样外部热源作用下,木材内部木纹方向垂直于作用方向时,着火延迟时间最长;
Under the action of a same heat source , when the direction of grain is perpendicular to the direction of the action , the ignition delay time is the longest .
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测量了着火延迟时间和燃烧时间,分析了氛围气温度、油滴直径、乳化剂添加率以及水添加率等因素对着火延迟、燃烧时间及微爆炸过程的影响。
The effects of following parameters : the temperature of ambient , the diameter of droplet , the ratio of water to oil and the ratio of surfactant to the emulsions on the occurrence of micro explosion , the times of ignition delay and combustion duration were investigated .
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结果表明:该方法重现性好,煤焦中含灰越高,着火所需时间越长。
The results show that these methods have good reproducibility , the more ash the char contains , the kindling point is higher and the time for ignition is longer .
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具有相近着火点的煤焦,着火所需时间却不一样,说明仅用煤的工业分析来评价煤质的优劣是不科学的。
Although there are similar kindling point and industrial analysis value of two kinds of chars , the time for ignition is different , illustrating that it is unscientific to evaluate coal quality only by the industrial analysis .
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通过数值模拟,研究了煤粉浓度与颗粒群的着火方式、着火时间和着火温度等的关系。
Correlations of coal concentration with the ignition mode , ignition time and ignition temperature of the cloud are predicated by numerical modelling .
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掺加造纸废液后,成型燃料易着火,但燃烧时间较长,不会增加成型燃料的灰分。
Adding pulping waste liquor could lower the ignition temperatuer , but increased the burning time . It had no influence on the ash content of the briquettes .
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在二甲醚中加入着火抑制剂,可以有效地推迟着火时间,控制燃烧始点;所谓时滞是指信号传输的延迟。
When the ignition inhibitor is added into DME , it can retard the start of ignition and then control the start of combustion . Time delay is retard of signal transmission .
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试验结果表明:随着氧的体积分数的增大,煤样的着火温度及燃尽温度均呈下降趋势,着火时间提前,燃烧时间缩短,煤粉的综合燃烧特性指数提高;
The larger the oxygen content is , the lower the igniting temperature and the burnout temperature are , and the greater the integration index of combustion characteristics is .
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本文首先研究了镁在水蒸气中的着火机理及模型,在高温管式炉中考察了加热速率、水蒸气浓度和粒径等因素,对镁颗粒着火温度和着火延迟时间的影响规律。
The effects of heating rate , steam concentration and particle diameter on ignition temperature and ignition delay time of magnesium in steam were studied by tube reactor .