面向对象的先进循环燃气轮机工质热物性计算方法

先进循环是燃气轮机发展的重要方向,1套通用先进循环工质热物性计算方法对先进循环研究具有重要意义.以工质最为复杂的化学回热循环为例,建立了1套通用的工质热物性计算方法,并论证了该方法也适用于其他先进循环.基于面向对象方法建立了1套计算系统并采用C＋＋语言编制其计算程序,验证了空气和水蒸气的热物性计算精度,最大误差为0.00852％.采用该热物性计算方法计算了1个化学回热循环的热力过程;在给定的条件下其效率比简单循环效率提升32％,达到47.32％.结果表明：所提出的热物性计算方法计算准确,通用性强,为先进循环研究提供了基础.

Calculation Method of Working Fluids Thermophysical Parameters for Object-Oriented in Advanced Cycle Gas Turbines

Advanced cycle is the important development direction of the gas turbine. General thermophysical properties calculation methods are the foundations of the research. The working fluids in the Chemically Recuperated Gas Turbine (CRGT) were analyzed, and a general thermodynamic parameters calculation were built. The method applied to other advanced cycle was demonstrated. Object-oriented method was used to build a calculation system, and C++ was used to code a program. The calculation precisions for air and the steam were verified, and the highest difference was 0.00852%. The program was used for performance calculation of a CRGT, and the thermal efficiency was 47.32, 32% elevation. The results show that the thermodynamic parameters calculation method is of high precision and general used, and it forms the foundation of the advanced cycle