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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.43 [2005] >
IJPAP Vol.43(08) [August 2005] >
| Title: | Effect of several irreversibilities on the thermo-economic performance of a realistic Brayton heat engine cycle |
| Authors: | Tyagi, S K
Chen, Jincan
Lin, Gouxing
Kaushik, S C |
| Keywords: | Thermo-economic function
Brayton heat engine cycle
Regenerator
Turbine
Compressor |
| Issue Date: | Aug-2005 |
| Publisher: | CSIR |
| IPC Code: | G01L |
| Abstract: | The thermo-economic
study of a more realistic regenerative Brayton cycle heat engine with finite
heat capacity of external reservoirs is presented in this paper. The external
irreversibility is due to finite temperature differences between the external
reservoirs and the heat engine while the internal irreversibilities are due to
the non-isentropic processes in the compressor and turbine and the regenerative
heat loss. The thermo-economic function is defined as the power output divided
by the total cost plus the running and maintenance costs of the system. The
objective function is optimized with respect to the cycle temperatures and the
optimum performance parameters are calculated for a typical set of operating
conditions. It is found that the effect of the turbine efficiency is more than
that of the compressor efficiency on all the performance parameters. It is also
found that the effects of the sink-side heat capacitance rate are more than
those of the heat capacitance rates on the source-side and working fluid on all
the performance parameters of the cycle for the same set of operating
condition. |
| Page(s): | 612-619 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.43(08) [August 2005]
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