喷水对半闭环燃气轮机循环的影响

本文对燃气轮机的简单循环、开环和半闭环系统,分别以空气和CO2作为工质、纯氧为氧化物、天然气为燃料时的热力循环过程,在喷水及不喷水条件下,利用自行设计的分析软件进行了较为系统的数值分析和性能评估,详尽分析了喷水量对使用空气或CO2作为工质的半闭环燃气轮机循环的影响,揭示了适量喷水有助于提高循环效率和输出功率的客观规律,为研制CO2零排放的高效燃气轮机装置奠定了坚实的理论基础.

THE EFFECTS OF WATER INJECTION ON SEMI-CLOSED CYCLE GAS TURBINES

With the self-designed computer code, numerical analysis and performance evaluations of simple, open and semi-closed gas turbine cycles have been carried out under the condition of using air and CO_2 as working fluid, pure oxygen as oxidant and natural gas as fuel, as well as with and without water injection. The effects of different amount of water injected in the semi-closed gas turbine cycle with air or CO_2 as working fluid were investigated in details, whose results revealed that the appropriate amount of water injection implicates to remove the CO_2 with higher cycle efficiency and specific power. Some conclusions would build a foundational theoretical base for the further development of zero CO_2 emission high efficiency gas turbines.