单轴恒速回热燃气轮机的变工况解析特性及初步经济分析

• 机 构: 中国科学院工程热物理研究所
• 出 处: 工程热物理学报
• 发表日期: 1999年3期
• 关键词: ANALITICAL SOLUTION OFF-DESIGN OPERATION SINGLE SHAFT RECUPERATIVE GAS TURBINE

该文给出单轴恒速回热燃气轮机变工况特性的显式解析解,并且总结了其变工况的典型情况;发现当对所有参数都用与其设计值的比值表达时,燃气轮机效率可以基本总结为单一曲线,并定量论证了恒速单轴燃气轮机采用回热后变工况效率反而相对有所下降.利用得出的解析解,还对采用回热的经济评价给出了初步分析,给出了采用回热合适与否的判别公式.“,”A typical analytical solution of single shaft constant rotating speed recuperative gas turbine part-load performance is derived based on analytical typical component-mainly compressor, turbine and recuperator-performances. Typical part load performances are summarized and it is found out that for the gas turbine installation, when all parameters are represented by the ratio to design values, their variation in part-load can be expressed in a narrow belt. It is pointed out qualitatively that the recuperative gas turbine efficiency variation is relatively inferior to that of the simply cycle. A preliminary economic analysis is given and a simple criterion is derived to evaluate the necessity of adopting a recuperator.