Exergoeconomic performance analysis and optimisation of an irreversible-closed intercooled regenerated gas turbine cycle

ABSTRACT

Based on finite time thermodynamic (FTT) model for a closed irreversible intercooled regenerated (ICR) gas turbine cycle, the analytical expressions of profit rate, power and efficiency are deduced. The dimensionless profit rate can reach its extreme value while the intercooling pressure ratio gradually increases, and the value has an additional maximum, i.e. the double-maximum, while the total pressure ratio gradually increases. The finite time exergoeconomic performance is maximised by optimising four heat conductance allocations with a given total heat exchanger conductance as well as the intercooling pressure ratio. Further optimising the total pressure ratio can make the double-maximum. Some characteristic parameters’ effects on the cycle exergoeconomic performance are analysed.

KEYWORDS:

• Gas turbine cycle
• intercooled regenerated cycle
• finite time thermodynamics
• exergoeconomic performance optimisation
• profit rate

Acknowledgements

This paper is supported by The National Natural Science Foundation of P. R. China (Project No. 51576207). The authors wish to thank the reviewers for their careful, unbiased and constructive suggestions, which led to this revised manuscript.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This paper is supported by The National Natural Science Foundation of China (Project No. 51576207).