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Mini two-shaft gas turbine exergy analysis with a proposal to decrease exergy destruction

机译：微型两轴燃气轮机的火用分析并提出减少火用破坏的建议

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In this case study, exergy analysis is applied to a mini two-shaft gas turbine which is located in Islamic Azad University Khomeini Shahr Branch`s Thermodynamics laboratory and a proposal presented to make exergy destruction less using a Heat Recovery Water Heater (HRWH). Calculations were done for N2=20000 (rpm) constant and various N1 and after that for N1=60000 (rpm) constant and various N2. Results revealed that the highest exergy destruction rate occurs in combustion chamber in all conditions and a huge part of exergy destruction through the turbine exhaust. Increase in N1 leads to increases in all component exergy destruction rates. On the other hand, power turbine is the only component which is affected by changes in N2 and the exergy destruction rate increases with increase in N2. Moreover, exergy gained rate within HRWH increased with increase in N1 and is almost constant with changes in N2. In the same vein, exergetic efficiency of HRWH and exergy gained rate within HRWH are increased with decrease in water outlet temperature of HRWH.
机译：在此案例研究中，将火用分析应用于位于伊斯兰阿扎德大学霍梅尼·沙尔分校热力学实验室的微型两轴燃气轮机，并提出了使用热回收热水器（HRWH）减少火用破坏的建议。对N2 = 20000（rpm）常数和各种N1进行计算，然后对N1 = 60000（rpm）常数和各种N2进行计算。结果表明，在所有情况下，最高的火用破坏率都发生在燃烧室中，其中很大一部分的火用破坏是通过涡轮机废气进行的。 N1的增加导致所有成分的火用破坏率增加。另一方面，动力涡轮是唯一受N2变化影响的组件，并且随着N2的增加，火用破坏率也随之增加。此外，HRWH中的本能获得率随N1的增加而增加，而随N2的变化几乎恒定。同样，随着HRWH出水温度的降低，HRWH的能量效率和本能获得率也随之增加。

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