反应进度对燃气分析法测温系统误差的影响

李昊; 刘勇; 张祥; 杨晨; 刘重阳

doi:10.13224/j.cnki.jasp.20230075

反应进度对燃气分析法测温系统误差的影响

doi: 10.13224/j.cnki.jasp.20230075

李昊¹,
刘勇¹,
张祥¹,
杨晨¹,
刘重阳^{2, 3}

1.
南京航空航天大学能源与动力学院，南京 210016
2.
西北工业大学动力与能源学院，西安 710072
3.
中国航发四川燃气涡轮研究院，四川绵阳 621000

基金项目: 中国航发集团自主创新专项资金（ZZCX-2018-021）；航空发动机及燃气轮机重大专项基础研究项目（J2019-Ⅴ-0005-0097）

详细信息

作者简介:
李昊（1998-），男，硕士生，主要研究方向为燃烧室燃烧

中图分类号: V231.2
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- 文章访问数: 11
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- 被引次数: 0
出版历程
- 收稿日期: 2023-02-14
- 网络出版日期: 2024-03-12

Effect of reaction progress on temperature measurement system error of gas analysis method

1.
College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China
3.
Sichuan Gas Turbine Establishment，Aero Engine Corporation of China，Mianyang Sichuan 621000，China

摘要

摘要:
基于焓值守恒法计算燃气温度的误差通常认为来源于直接测量和高温分解的影响，在某型高温升燃烧室的测试中发现：高温环境下以热电偶测量结果作为参考标准来评价燃气分析法的性能会引入较大响应误差，因此采用Sandia实验室的湍流火焰数据作为参考标准对各测点温度进行对比分析。结果显示焓值守恒法计算的温度与实验中测量的温度整体平均误差较小，但是在反应初始区域以及燃烧区域出现较大误差。进一步研究发现：燃气分析法测温不确定度主要来源于反应进度，采用反应进度变量能够对温度计算结果的不确定度进行量化，进而对燃气分析测温法的适用范围进行判断和限定，为进一步研究焓值守恒测温法在湍流火焰和发动机燃烧室测温中的应用以及不确定度评估提供了参考依据。
- 燃气分析测温 /
- 焓值守恒 /
- 反应进度变量 /
- 系统误差 /
- 湍流火焰
Abstract:
It is generally believed that the error of gas temperature calculation based on enthalpy conservation method is caused by the error of direct measurement and the influence of high temperature decomposition. However, in the test of a certain high temperature combustion chamber, it was found that, taking thermocouple measurement results as the reference standard to evaluate the performance of gas analysis method under high temperature environment may introduce a large response error, so the turbulent flame experimental data of Sandia laboratory were used as reference standard to compare and analyze the temperature of each measuring point. The results showed that the overall average error of the temperature calculated by the enthalpy conservation method was small compared with the temperature measured in the experiment, but there were large errors in the initial reaction region and the combustion region. Further research found that: the uncertainty of temperature measurement in gas analysis was mainly derived from reaction progress. The uncertainty of temperature calculation results can be quantified by using reaction progress variable, and the applicable range of gas analysis method can be judged and limited, providing a reference for further research on the application of the enthalpy conservation temperature measurement method in the temperature measurement of turbulent flame and engine combustion chamber and the evaluation of uncertainty.
- temperature by gas analysis /
- conservation of enthalpy value /
- reaction progress variable /
- systematic error /
- turbulent flame

HTML

图 1 燃气分析系统示意图

Figure 1. Schematic diagram of gas analysis system

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图 2 热电偶与燃气分析测温结果对比

Figure 2. Comparison of thermocouple and gas analysis temperature measurement results

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图 3 各测点反应进度变量结果

Figure 3. Relationship between reaction progress variable and relative error

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图 4 反应进度变量与相对误差关系

Figure 4. Relationship between reaction progress variable and relative error

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图 5 Sandia D火焰实验示意图

Figure 5. Schematic diagram of Sandia D flame experiment

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图 6 Sandia实验与燃气分析测温结果对比

Figure 6. Comparison of Sandia experiment and gas analysis temperature measurement results

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图 7 各测点反应进度变量结果

Figure 7. Relationship between reaction progress variable and relative error

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图 8 反应进度变量与相对误差关系

Figure 8. Relationship between reaction progress variable and relative error

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表 1 某型高温升燃烧室测试工况

Table 1. Test condition of a type of high temperature combustion chamber

工况	燃料	摩尔浓度/%			当量比
工况	燃料	N₂	O₂	H₂O	当量比
A	航空煤油（C₁₂H₂₄）	76.7	20.5	2.8	0.34
B					0.42
C					0.49
D					0.57

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表 2 实验测量数据不确定度

Table 2. Uncertainty of experimental measurement data

编号	不确定度/K	编号	不确定度/K
A-1	1.35	C-1	2.18
A-2	1.41	C-2	2.88
A-3	1.83	C-3	3.12
A-4	1.76	C-4	5.25
A-5	1.39	C-5	2.84
B-1	1.36	D-1	2.61
B-2	1.67	D-2	3.16
B-3	2.63	D-3	5.03
B-4	4.06	D-4	10.29
B-5	2.19	D-5	4.70

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表 3 Sandia D火焰实验喷嘴参数

Table 3. Nozzle parameters of Sandia D flame experiment

流道	流速/（m/s）	组分（体积分数）
空气流道（Coflow）	0.9	100%Air
值班级流道（Pilot）	11.4	100%$ {\mathrm{C}\mathrm{H}}_{4} $
主燃级流道（Main-Jet）	49.6	25%$ {\mathrm{C}\mathrm{H}}_{4} $、75%Air

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