摘要
目前针对增压富氧条件下混合娴气的热力特性分析仍需繁琐的计算过程。利用"虚拟纯物质"概念及Lee-Kesler关联式对增压富氧燃烧条件下产生的高压烟气进行了计算分析。采用混合规则求取了"虚拟的纯物质"的虚拟临界压力,虚拟临界温度。此外,结合对应态原理,求得了实际气体焓与熵。对不同系统压力下烟气实际焓与熵进行了计算。结果表明:虚拟临界法与其他计算方法相比,具有计算简便,方便现场工程人员使用且具有较高精度的特点。
The analysis oxy-coal combustion of paper, the flue gas was critical pressure, virtua combined with Lee-Kes entropy. Enthalpy and results show that this of thermal characteristic of flue gas that generated under pressurized high pressure, still need complicated computing process. In this assumed as virtual pure material, using mixed rules for its virtual critical temperature. Then consider corresponding state theory, and er relational got a simple algorithm of real-flue gas＇s enthalpy and entropy of real-flue gas at different pressure was calculated. The calculation method compare with other calculation method, it is characterized by it＇s simple, convenient and also has a higher precision of characteristics.
出处
《锅炉技术》
北大核心
2014年第3期6-10,30,共6页
Boiler Technology
基金
河北省自然基金(E2013502292)
关键词
增压富氧
实际烟气
虚拟临界法
偏差焓
偏差熵
oxy-coal combustion
real-flue gas
virtual critical parameters
enthalpydeparture
entropy departure
