高级搜索

您是今天第:1762位访问者

您是第:6098101位访问者

石蜡燃料的燃烧性能与其化学组成的关系
Relationship between Combustion Characteristics and Chemical Components of Paraffin Fuel
  • 摘要
  •  
  • 参考文献
  •  
  • 引证文献
  •  
  • 相似文献
中文摘要:
      为了研究石蜡的燃烧性能与其化学组成之间的关系,针对54#、58#、62#和66# 4种粗晶石蜡开展了气相色谱分析,并测试了4种石蜡的燃烧热和在氧气流中的瞬时退移速率,同时利用NASA-CEA软件计算了4种石蜡燃料不同氧燃比下的能量特性。结果表明: 54#、58#、62#和66# 4种粗晶石蜡的平均分子式分别为C26.40H54.80、C27.59H57.18、C28.02H58.04和C32.11H66.22,正构烷烃含量分别为92.79%、89.44%、88.36%和84.55%; 平均碳数n越大、正构烷烃含量越小的石蜡其燃烧热越低; 随着平均碳数n值的增大以及正构烷烃含量的降低,石蜡的退移速率降低。NASA-CEA 程序计算得到4种石蜡的能量特性受其化学组成的影响很小,其最佳氧燃比均为2.7,对应的理论比冲约为354 s,绝热火焰温度约为3600 K。
中文关键词: 固液混合发动机  石蜡燃料  气相色谱  化学组成  燃烧热  退移速率  能量特性
英文摘要:
      Paraffin fuels are ideal energy for hybrid rocket engine owing to the characteristics of high regression rate. In order to study the relationship between the combustion characteristics and chemical components of paraffin fuel, the gas chromatography was carried out for 54#, 58#, 62# and 66# 4 kinds of macrocrystalline paraffin fuels, and measured the combustion heat and the regression rate in the oxygen flow rate of these 4 kinds of macrocrystalline paraffin fuels. In addition, the energy characteristics of these macrocrystalline paraffin fuels at different oxygen fuel ratio were calculated using NASA-CEA software. The results show that the average molecular formulas of the 54#, 58#, 62# and 66# 4 kinds of macrocrystalline paraffin were C26.40H54.80, C27.59H57.18, C28.02H58.04 and C32.11H66.22, respectively, and the percentage contents of the n-alkanes of the 54#, 58#, 62# and 66# 4 kinds of macrocrystalline paraffin were 92.79%, 89.44%, 88.36% and 84.55%, respectively. The bigger the carbon number as well as the less the percentage content of n-alkanes, the smaller the combustion heat of paraffin fuel. And the regression rates of paraffin fuels were reduced along with the increase of carbon number. According to the calculated results of NASA-CEA software, the theoretical specific impulse of paraffin fuels were decreased with the carbon number of paraffin increasing, and the adiabatic flame temperatures were increased with the carbon number of paraffin increasing, but these influences of the chemical components of paraffin fuels on the energy characteristics were insignificant. The optimum oxygen fuel ratio of 4 kinds of macrocrystalline paraffin were all 2.7, the theoretical specific impulse were all about 354 s more than HTPB, and the adiabatic flame temperature were all about 3600 K less than HTPB.
英文关键词: hybrid rocket engine  paraffin fuel  gas chromatography  chemical components  combustion heat  regression rate  energy characteristics
DOI:10.11943/j.issn.1006-9941.2017.08.003
基金项目:工信部自主科研专项基金资助
引用文献:唐乐,陈苏杭,许志伟,张伟,沈瑞琪,叶迎华.石蜡燃料的燃烧性能与其化学组成的关系[J].含能材料,2017,25(8):633~638
作者单位E-mail
唐乐 南京理工大学化工学院, 江苏 南京 210094 tangyue090@163.com,rqshen@njust.edu.cn 
陈苏杭 南京理工大学化工学院, 江苏 南京 210094  
许志伟 南京理工大学化工学院, 江苏 南京 210094  
张伟 南京理工大学化工学院, 江苏 南京 210094  
沈瑞琪 南京理工大学化工学院, 江苏 南京 210094 rqshen@njust.edu.cn 
叶迎华 南京理工大学化工学院, 江苏 南京 210094  
摘要点击次数: 247
全文下载次数: 233
HTML 查看全文   查看/发表评论   下载PDF阅读器

更多>>

更多>>

分享按钮