The current paper presents a thermodynamic analysis of an air-bottoming cycle (ABC) operated by the exhaust gasses of a regenerative gas turbine cycle. The partial exhaust heat of a topping gas turbine cycle is utilized to heat the compressed air of the ABC by passing it through a heat exchanger (H.E.₂), whereas remaining heat is used to heat the compressed air of the topping cycle before entering a combustion chamber by passing it through a heat exchanger (H.E.₁). The effects of the turbine inlet temperature of the topping cycle (1000 K ⩽ \({\text{TIT}}\) ⩽ 1500 K) and fraction of mass flow rate of the exhaust gas (0 ⩽\(x\)⩽ 1) on the net output, combined thermal efficiency, exergy destruction, exergy loss by exhaust gasses, and specific fuel consumption (SFC) are investigated parametrically for a particular value of the pressure ratio of the topping and bottoming cycles. At \(x = 0\), the net output and thermal efficiency of the combined cycle increase by 15.1% and 31.3%, respectively, whereas the SFC decreases by 13.1% and 15.5% at \({\text{TIT}} = 1000\;{\text{K}}\) and \({\text{TIT}} = 1500\;{\text{K}}\), respectively. The exergy destruction of the heat exchanger of the topping cycle increases, whereas that of the bottoming cycle decreases with an increase in x. Overall, in terms of the net output and thermal efficiency, a simple gas turbine cycle with an air-bottoming combined cycle performs better than a simple regenerative gas turbine cycle; however, in view of the exergy loss by exhaust gasses, a simple regenerative gas turbine cycle is better than the combined cycle.

本论文介绍了由再生燃气轮机循环的废气驱动的空气循环循环（ABC）的热力学分析。顶部燃气轮机循环的部分废热通过流经热交换器（HE ₂）来加热ABC的压缩空气，而剩余的热量在进入燃烧之前用于加热顶部循环的压缩空气。使其通过热交换器（HE ₁）。顶部循环的涡轮进口温度（1000 K⩽ \（{\ text {TIT}} \）  ⩽1500 K）和废气质量流率的比例（0⩽ \（x \）的影响）1）对于顶部和底部循环的压力比的特定值，通过参数研究净输出，综合热效率，火用破坏，废气的火用损失和比燃料消耗（SFC）。在\（x = 0 \）时，联合循环的净输出和热效率分别增加15.1％和31.3％，而在\（{\ text {TIT}} = 1000 \; {\ text {K}} \）和\（{\ text {TIT}} = 1500 \; {\ text {K}} \\）。顶部循环的热交换器的火用破坏增加，而底部循环的火用破坏随着x的增加而减少。总体而言，就净输出和热效率而言，简单的燃气轮机循环与空气底联合循环的性能要优于简单的再生式燃气轮机循环。但是，考虑到废气的火用损失，简单的可再生燃气轮机循环优于联合循环。