Performance investigations under maximum ecological and maximum economic conditions of a complex Brayton cycle

A complex Brayton cycle is investigated under maximum economic and maximum ecological conditions. The economic function defined as the power output divided by the total cost, while the ecological function defined as the power output divided by the entropy generation rate, is optimised with respect to the cycle temperatures, reheat and intercooling pressure ratios for a typical set of operating conditions. It is found that there are optimal values of the turbine outlet temperature, intercooling, reheat and cycle pressure ratios at which the cycle attains the maximum values of the economic function, ecological function power output, efficiency and the minimum entropy generation rate.

[1]  Santanu Bandyopadhyay,et al.  Thermoeconomic optimization of combined cycle power plants , 2001 .

[2]  S. C. Kaushik,et al.  Optimal criteria based on the ecological function of an irreversible intercooled regenerative modified Brayton cycle , 2005 .

[3]  F. Curzon,et al.  Efficiency of a Carnot engine at maximum power output , 1975 .

[4]  Yasin Ust,et al.  Ecological performance analysis of an endoreversible regenerative Brayton heat-engine , 2005 .

[5]  Mohamed A. Antar,et al.  Thermoeconomic considerations in the optimum allocation of heat exchanger inventory for a power plant , 2001 .

[6]  Harvey S. Leff,et al.  Thermal efficiency at maximum work output: New results for old heat engines , 1987 .

[7]  S. C. Kaushik,et al.  PARAMETRIC STUDY OF AN IRREVERSIBLE REGENERATIVE BRAYTON HEAT ENGINE WITH ISOTHERMAL HEAT ADDITION , 2003 .

[8]  I. I. Novikov.  The efficiency of atomic power stations (a review) , 1958 .

[9]  J. Vecchiarelli,et al.  ANALYSIS OF A CONCEPT FOR INCREASING THE EFFICIENCY OF A BRAYTON CYCLE VIA ISOTHERMAL HEAT ADDITION , 1997 .

[10]  Fengrui Sun,et al.  Performance analysis for an irreversible variable temperature heat reservoir closed intercooled regenerated Brayton cycle , 2003 .

[11]  Bahri Sahin,et al.  Finite time thermoeconomic optimization for endoreversible refrigerators and heat pumps , 1999 .

[12]  Hasbi Yavuz,et al.  Thermal efficiency of a regenerative Brayton cycle with isothermal heat addition , 1999 .

[13]  S. Sieniutycz,et al.  Thermodynamic Optimization of Finite-Time Processes , 2000 .

[14]  Cha'o-Kuang Chen,et al.  Power optimization of an endoreversible regenerative Brayton cycle , 1996 .

[15]  Alejandro Medina,et al.  Regenerative gas turbines at maximum power density conditions , 1996 .

[16]  A. Bejan.  Theory of heat transfer-irreversible power plants , 1988 .

[17]  Yasin Ust,et al.  Performance analysis and optimization of an irreversible dual-cycle based on an ecological coefficient of performance criterion , 2005 .

[18]  R. L. Kiang,et al.  Power performance of a nonisentropic Brayton cycle , 1991 .

[19]  Lingen Chen,et al.  Power optimization of an irreversible closed intercooled regenerated brayton cycle coupled to variable-temperature heat reservoirs , 2005 .

[20]  John W. Mitchell,et al.  Optimum Heat Power Cycles for Specified Boundary Conditions , 1991 .

[21]  A. Bejan.  Entropy generation minimization: The new thermodynamics of finite-size devices and finite-time processes , 1996 .

[22]  Bahri Sahin,et al.  Performance analysis of a two-stage irreversible heat pump under maximum heating load per unit total cost conditions , 2002 .

[23]  L.Berrin Erbay,et al.  Optimal design of the regenerative gas turbine engine with isothermal heat addition , 2001 .

[24]  S K Tyagi,et al.  FINITE TIME THERMODYNAMIC ANALYSIS OF A NONISENTROPIC REGENERATIVE BRAYTON HEAT ENGINE , 2002 .

[25]  Cha'o-Kuang Chen,et al.  Maximum power of an endoreversible intercooled Brayton cycle , 2000 .

[26]  Bahri Sahin,et al.  A comparative performance analysis of irreversible regenerative reheating Joule-Brayton engines under maximum power density and maximum power conditions , 1998 .

[27]  Fernando Angulo-Brown,et al.  An ecological optimization criterion for finite‐time heat engines , 1991 .

[28]  Fengrui Sun,et al.  Theoretical analysis of the performance of a regenerative closed Brayton cycle with internal irreversibilities , 1997 .