爆震燃气轮机的变比热容热力循环性能

李晓丰; 肖俊峰; 王玮; 王峰; 危师让; 郑龙席

doi:10.13224/j.cnki.jasp.2016.02.015

爆震燃气轮机的变比热容热力循环性能

doi: 10.13224/j.cnki.jasp.2016.02.015

1. 西安热工研究院有限公司燃气轮机技术部, 西安 71003;
2. 西北工业大学动力与能源学院, 西安 710072

基金项目:

华能集团总部科技项目(HNKJ14-H05)

详细信息

作者简介:
李晓丰(1985-),男,湖南邵阳人,工程师,博士,主要从事燃气轮机燃烧、总体性能分析以及转子动力学研究.

中图分类号: V231.2
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出版历程
- 收稿日期: 2015-01-19
- 刊出日期: 2016-02-28

Thermodynamic cycle performance of detonation gas turbine with variable specific heat capacity

1. Gas Turbine Technology Department, Xi'an Thermal Power Research Institute Company Limited, Xi'an 71003;
2. School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 为分析变比热容下爆震燃气轮机的热力循环性能,建立了考虑比热容随工质成分及温度变化的爆震燃气轮机热力循环模型,分析中同时考虑了压气机、燃烧室、透平等部件的效率.在不同比较条件下,利用变比热容法对比分析研究了燃气轮机爆震循环(DCGT)、Brayton循环和Humphrey循环燃气轮机的热力循环性能.计算结果表明:与Brayton循环相比,DCGT具有较大性能优势;在透平前温度为1620K且压比为16.5时,DCGT热效率较Brayton循环高28.8%;在无量纲吸热量为4.25且压比为16.5时,DCGT热效率则较Brayton循环高30.7%.
- 变比热容 /
- 燃气轮机 /
- 爆震 /
- 热力循环 /
- 性能分析
Abstract: In order to analyze the thermodynamic cycle performance of detonation gas turbine with variable specific heat capacity, the thermodynamic cycle model of detonation gas turbine was established by considering the specific heat capacity varying with the composition and temperature of the working fluid, as well as the efficiency of the compressor, combustor, turbine and other components. Under different comparison conditions, the thermodynamic cycle performances of detonation cycle of gas turbine (DCGT), Brayton cycle and Humphrey cycle gas turbine were analyzed by using variable specific heat capacity method. The results show that the performance of DCGT is better than that of Brayton cycle. When the turbine inlet temperature is 1620K and the pressure ratio is 16.5, the thermal efficiency of DCGT is increased by 28.8% compared with Brayton cycle. When the dimensionless absorbed heat is 4.25 and the pressure ratio is 16.5, the thermal efficiency of DCGT is 30.7% higher than Brayton cycle.
- variable specific heat capacity /
- gas turbine /
- detonation /
- thermodynamic cycle /
- performance analysis

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参考文献(18)

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