Second law analysis and parametric study for combined Brayton and two parallel inverse Brayton cycles

SYNOPSIS Performance analysis and parametric study has been carried out for combined Brayton and two parallel inverse Brayton cycles using second law analysis. The analytical formulae of exergy balance, exergy and work output, and exergy efficiency are derived. The largest exergy loss location is determined. The influences of various parameters on the exergy efficiency and other performances are analysed and the optimizations of the expansion pressure of the first inverse Brayton cycle are carried out by numerical examples.

[1]  Brian Agnew,et al.  A hybrid gas turbine cycle (Brayton/Ericsson): An alternative to conventional combined gas and steam turbine power plant , 1997 .

[2]  Michael J. Moran,et al.  Availability analysis: A guide to efficient energy use , 1982 .

[3]  Fengrui Sun,et al.  Exergy analysis for a Braysson cycle , 2001 .

[4]  I Potts,et al.  Examination of the Performance of an Unconventional Combination of Rankine, Brayton, and Inverse Brayton Cycles , 2006 .

[5]  I. Dincer,et al.  Exergy methods for assessing and comparing thermal storage systems , 2003 .

[6]  Antonio Peretto,et al.  Inverted Brayton cycle employment for low-temperature cogenerative applications , 2002 .

[7]  Marc A. Rosen,et al.  Second‐law analysis: approaches and implications , 1999 .

[8]  Ken-ichi Kaneko,et al.  Mirror gas turbines : A newly proposed method of exhaust heat recovery , 2001 .

[9]  A. Bejan.  Fundamentals of exergy analysis, entropy generation minimization, and the generation of flow architecture , 2002 .

[10]  I Potts,et al.  Simulation of combined Brayton and inverse Brayton cycles , 2003 .

[11]  Fengrui Sun,et al.  Second-law analysis and optimisation for combined Brayton and inverse Brayton cycles , 2007 .

[12]  Brian Agnew,et al.  Examination of the performance envelope of combined Rankine, Brayton and two parallel inverse Brayton cycles , 2004 .

[13]  Fengrui Sun,et al.  Powers and efficiency performance of an endoreversible Braysson cycle , 2002 .

[14]  Fengrui Sun,et al.  Power, power density and efficiency optimization of an endoreversible Braysson cycle , 2002 .

[15]  I Potts,et al.  Performance analysis of combined Brayton and inverse Brayton cycles and developed configurations , 2006 .