Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (7): 102-106.doi: 10.3969/j.issn.1000-565X.2013.07.017

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Temperature Field Measurement of Micro Flames Using Auto- Scanning Micro Thermocouple

Jiang Li- qiao1 Kang Zhan- xiao1,2 Yang Hao- lin1 Zhao Dai- qing1   

  1. 1.Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China;2.University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2013-02-05 Revised:2013-04-08 Online:2013-07-25 Published:2013-06-01
  • Contact: 赵黛青(1958-)，女，博士，研究员，主要从事燃烧与能源战略研究． E-mail:zhaodq@ms.giec.ac.cn
  • About author:蒋利桥(1974-)，男，博士，副研究员，主要从事微尺度燃烧及替代燃料燃烧污染物控制研究．E-mail:jianglq@ms．giec．ac．cn
  • Supported by:

    国家自然科学基金资助项目(51176193);国家自然科学基金青年基金资助项目(51006109)

PDF

1027

Abstract:

Proposed in this paper is a method to measure the temperature of micro flames using an auto- scanning micro thermocouple.In the investigation,first,the effects of thermocouple size and hot flue gas velocity on the measurement error are theoretically analyzed.Next,the effects of data acquisition time interval and thermocouple moving velocity on the measured flame temperature are explored in detail by the experiments of three linearly-arranged micro premixed jet flames.The results show that the temperature measurement error is less than 0.6% when the wire diameter of micro thermocouple is less than 50μm,and that,when the data acquisition time interval of auto- scanning is greater than 0.1s and when the moving velocity of thermocouple ranges from 1.82 to 4.22mm/s,the temperature measured by a 50- μm auto- scanning micro R- thermocouple coincides well with that by the manual single- point long- time measurement,which means that the proposed auto- scanning micro thermocouple method helps to measure the temperature of micro flames rapidly and accurately.

Key words: micro flame, micro thermocouple, auto- scanning, temperature field measurement

CLC Number: