期刊文献+

南京市某CNG加气站大气甲烷体积分数的研究及气象要素对其影响 预览

Study on Atmospheric Methane Concentration of a CNG Filling Station in Nanjing and Influence of Meteorological Elements on it
在线阅读 下载PDF
分享 导出
摘要 CNG即压缩天然气是重要的一类人为CH4排放源,为探明CNG加气站CH4扩散体积分数及其与气象要素之间的相关性,针对南京浦口区某加气站采用LGR(便携式温室气体分析仪)与气相色谱仪在加气的不同环节对CH4体积分数进行观测。本文通过南京市某CNG加气站附近CH4泄露时CH4体积分数的测量数据,分析加气站加气过程中的不同环节CH4的体积分数变化及其与气象要素(温度、风速、湿度)的关系。进行观测,并测量了同期不同的气象要素(温度、湿度、风速)。结果表明:加气站确实存在大量CH4泄露,此CNG加气站CH4平均体积分数与背景值的差值维持在0.7×10^-6,尤其在在加气枪拔出瞬间,卸载气体体积分数会达到422.59×10^-6;CH4泄露受到气象要素的影响,泄露体积分数与温度、风速存在明显的负相关,且达到极显著水平(|R|=0.866>|R0.01|),与湿度不存在相关性。 CNG, compressed natural gas, is an important source of anthropogenic CH4 emissions. In order to find out the correlation between CH4 concentration of CNG filling station and meteorological elements, a LGR (portable greenhouse gas analyzer) and gas chromatograph were used to observe the CH4 concentration at different refueling links of a gas filling station in Pukou District, Nanjing, and different meteorological elements (temperature, humidity, wind speed) during the same period were measured. The results show that there is a large amount of CH4 leakage in the gas station. The difference between the average concentration of CH4 in the CNG filling station and the background concentration was maintained at 0.7×10^-6, especially at the moment when the gas gun is pulled out, the unloading gas concentration reached 422.59×10^-6. Also, the CH4 leakage is affected by different meteorological factors, the leakage concentration has a significant negative correlation with temperature and wind speed, and reaches a extremely significant level (|R|=0.866>|R0.01|), and there is no correlation with humidity.
作者 韩佳昊 郭云飞 熊杰 武雅珍 张依鸣 韩苗苗 HAN Jiahao;GUO Yunfei;XIONG Jie;WU Yazhen;ZHANG Yiming;HAN Miaomiao(College of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210000,China;College of Atmospheric Science,Nanjing University of Information Science and Technology,Nanjing 2100003,China;Sinopec Beihai LNG Co.,Ltd.,Beihai 536000,Guangxi,China)
出处 《能源研究与管理》 2019年第1期35-38,47共5页 Jiangxi Energy
基金 江苏省大学生科技创新训练项目(201710300046).
关键词 CNG加气站 CH4泄漏量 加气环节 气象要素 南京市 CNG filling station CH4 leakage refueling link meteorological elements Nanjing city
作者简介 韩佳昊(1996-),男,银川人,本科在读,南京信息工程大学,应用气象专业,主要研究方向:城市气象.
  • 相关文献

参考文献6

二级参考文献68

共引文献19

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈