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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (6): 1008-1013    DOI: 10.3785/j.issn.1008-973X.2012.06.008
无线电电子学、电信技术     
固体氧化物燃料电池的气体检测特性
丁家峰１,２, 罗安３, 胡志坤２, 王会海2, 曹建2
1. 中南大学 信息科学与工程学院,湖南 长沙 410083；2. 中南大学 物理与电子学院,湖南 长沙 410083；
3. 湖南大学 电气与信息工程学院,湖南 长沙 410082
Detection characteristic of gases of solid oxide fuel cell
DING Jia-feng１,2, LUO An3,HU Zhi-kun2,WANG Hui-hai2,CAO Jian2
1. College of Information Science and Engineering, Central South University,Changsha 410083, China；
2. College of Physics and Electronics, Central South University, Changsha 410083,China；
3. College of Electrical Engineering and Information Technology, Hunan University,Changsha 410082, China
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摘要：

以变压器油中溶解的H2,CO,CH4,C2H6,C2H4和C2H2故障气体为例,通过化学热力学理论计算了固体氧化物燃料电池(SOFC)的理想输出电压,证明了SOFC对多种故障气体的可检测性.分析温度和压强对SOFC输出电压的影响,结果表明:SOFC的工作稳定性取决于高精度的温度控制系统.利用电化学动力学理论建立气体物质的量与输出电压之间的关系,通过计算发现气体物质的量与输出电压包络之间存在线性关系,从理论上证明了SOFC对故障气体的线性检测特性.设计了基于SOFC和色谱柱的实验平台,实验结果验证了SOFC检测器具有良好的重复性和线性检测特性,基线稳定,C2H2最小检测体积分数为0.08 μL/L,并可同时检测多组份可燃气体.
Abstract:

Taking some fault gases which were dissolved in transformer oil, such as H2, CO, CH4, C2H6, C2H4 and C2H2, for example, and using the chemical thermodynamics theory calculations for the ideal output voltage of solid oxide fuel cell (SOFC) to them, this work proved the ability of SOFC for detecting kinds of combustible gases. The effects of temperature and pressure on output voltage were analyzed. Results showed that the stability of SOFC depended on high precision temperature control system. The relationship between gas mole quantity and output voltage was established using electrochemical kinetics theory. And the theory calculation showed that there had linear relationship between them. Thus, the SOFC was proved theoretically to have linear detection characteristics for fault gases. At last, an experiment platform based on SOFC and chromatographic column was built to evaluate the characteristics of SOFC. Results showed that the SOFC detector had good repeatability, linear detection characteristics and baseline stability. The limit of volume fraction of C2H2 could reach 0.08 μL/L. And the SOFC could detect multi component combustible gas simultaneously.
出版日期: 2012-07-24
:  TM 411  
基金资助:

国家自然科学基金资助项目(61172047).
作者简介: 丁家峰(1977— ),男,讲师,从事电力设备在线监测技术研究. E-mail:csjfding@126.com
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引用本文:

丁家峰, 罗安, 胡志坤, 王会海, 曹建. 固体氧化物燃料电池的气体检测特性[J]. J4, 2012, 46(6): 1008-1013.

DING Jia-feng, LUO An,HU Zhi-kun,WANG Hui-hai,CAO Jian. Detection characteristic of gases of solid oxide fuel cell. J4, 2012, 46(6): 1008-1013.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.06.008    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I6/1008

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