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75t/h洗煤泥流化床锅炉设计与点火运行 被引量:1
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作者 蒋旭光 池涌 +8 位作者 严建华 黄国权 杨家林 李晓东 倪明江 岑可法 吴文伟 朱晓峰 苏小平 《燃烧科学与技术》 EI CAS CSCD 2001年第3期291-293,共3页
介绍采用浙江大学开发的异比重流化床燃烧技术燃用洗煤泥的 75 t/h流化床锅炉设计的技术特点、点火过程及运行情况。运行表明 。
关键词 洗煤泥 流化床锅炉 点火运行 设计
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车用汽油机点火运行时活塞组摩擦损失微小变化的评定方法 被引量:1
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作者 盛凯夫 周良弼 黄四保 《汽车工程》 EI CSCD 北大核心 1989年第4期52-57,共6页
本文介绍了怎样用台架试验法来评价车用汽油机点火运行时活塞组摩擦力的微小变化。
关键词 汽油机 点火运行 活塞组 摩擦损失
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煤炭地下气化技术现状及大庆油田发展潜力分析
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作者 李永环 王力 +3 位作者 刘钰川 韩重莲 李海成 马媛媛 《石油地质与工程》 CAS 2024年第6期125-130,共6页
煤炭地下气化技术是一种将煤转化为可燃气体的新型能源技术,其基本理论已形成,且国内外有大量的应用实例,证实了该项技术具有一定的可行性。大庆油田作为中国重要的石油工业基地,为实现可持续发展,需进行资源领域接替和战略转移。通过... 煤炭地下气化技术是一种将煤转化为可燃气体的新型能源技术,其基本理论已形成,且国内外有大量的应用实例,证实了该项技术具有一定的可行性。大庆油田作为中国重要的石油工业基地,为实现可持续发展,需进行资源领域接替和战略转移。通过对煤炭地下气化技术原理分析及国内外技术现状调研,重点开展了气化炉构建、气化点火运行、气化监测控制等关键技术分析,并结合大庆油田的实际情况,分析了大庆油田在煤炭地下气化技术方面的地质条件和潜力,以及现有技术资源的优势,认为大庆油田在煤炭地下气化技术的开发利用方面拥有巨大的优势和潜力,并为典型井组现场试验提供了技术支撑。 展开更多
关键词 煤炭地下气化 气化炉 监测控制 气化剂 点火运行
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链条炉排锅炉改造为低倍率循环流化床锅炉及其运行 被引量:1
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作者 王文智 于善宏 《工业锅炉》 2004年第6期35-38,共4页
文章通过对原有陈旧炉型改造为先进的炉型 ,提出了一个符合中国国情的、以较少资金投入获得最大经济效益的可行性分析 ,并叙述了点火运行等操作方法和故障处理措施 。
关键词 循环流化床锅炉 点火运行 结焦原因及处理 改造
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Effects of Spark Ignition Engine Operating Parameters on Its Cyclic Variation ——Modeling and Simulation
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作者 纪常伟 《Journal of Beijing Institute of Technology》 EI CAS 2002年第3期332-336,共5页
An engine cyclic variation model has been built by using the residual gas temperature for the n th cycle as the input of the model, through constant pressure intake process, adiabatic compression process, constan... An engine cyclic variation model has been built by using the residual gas temperature for the n th cycle as the input of the model, through constant pressure intake process, adiabatic compression process, constant volume combustion process, adiabatic expansion process, adiabatic blow down process and constant pressure exhaust process to approximate the thermodynamic processes in the cylinder, finally the residual gas temperature for the ( n+1) th cycle can be estimated. Because of the adding of engine operating parameters such as engine speed, spark advance, equivalence ratio, intake air pressure, intake air temperature to the model, effects of these parameters on cyclic variation can be estimated quantitatively. Since residual gas temperature fluctuation between cycles reflects the circumstances of engine cyclic variation, parameters to which residual gas temperature is sensitive are most likely used as the means to control cyclic variation. Model simulation shows that for the nearly stiochiometric mixture, cyclic variation is not obvious or even quite stable, but for the lean mixture, under the circumstances of partial load and larger spark advances, engine cyclic variations occur chaotically or with bifurcation. 展开更多
关键词 cyclic variation MODELING residual gas temperature spark ignition engine
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Sensitivity and effect of key operational parameters on performance of a dual-cylinder free-piston engine generator 被引量:1
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作者 ZHANG Zhi-yuan FENG Hui-hua +1 位作者 JIA Bo-ru ZUO Zheng-xing 《Journal of Central South University》 SCIE EI CAS CSCD 2022年第7期2101-2111,共11页
The free-piston engine generator(FPEG)is regarded as the next generation of energy conversion system which may replace traditional engines in the future.The effect of key operational parameters like excess air ratio o... The free-piston engine generator(FPEG)is regarded as the next generation of energy conversion system which may replace traditional engines in the future.The effect of key operational parameters like excess air ratio of input mixture and ignition position on the engine performance of a dual-cylinder FPEG was investigated,and their sensitivity was analyzed in this paper.The operating compression ratio of the system is susceptible to changes in excess air ratio and ignition position.At the same time,it decreases from 15.8 to 6.6 when excess air ratio increases from 0.85 to 1.15,but it increases from 6.1 to 13.3 as ignition position increases from 15 mm to 20 mm.The operating frequency and indicated power are more sensitive to changes in excess air ratio than ignition position.But it is the opposite for the indicated thermal efficiency and friction loss.Excess air ratio and ignition position have a quite similar influence on heat transfer.Therefore,from the perspective of system operation and performance,it is preferable to keep excess air coefficient slightly below 1.0.In contrast,when selecting ignition position,it is of great importance to comprehensively consider the risk of structural damage caused by the increase in the compression ratio and in-cylinder gas pressure. 展开更多
关键词 free piston engine generator excess air ratio ignition position operation characteristics sensitivity analysis thermal efficiency
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