Thermo-economic optimization of heat recovery steam generator for a range of gas turbine exhaust temperatures

Nadir, Mahmoud; Ghenaiet, Adel; Carcasci, Carlo

doi:10.1016/j.applthermaleng.2016.06.035

Cited by 32 publications

(11 citation statements)

References 37 publications

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“…Taking into account three different forms of objective functions F: We propose in this framework three forms of objective functions F. In form 1, the objective function F will be expressed as follows 23 max…”

Section: Objective Functionsmentioning

confidence: 99%

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Coupling of inverse method and cuckoo search algorithm for multiobjective optimization design of an axial flow pump

Chikh

Belaidi

Khelladi

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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This work describes the application of a multiobjective cuckoo search method for turbomachinery design optimization of an axial pump. Maximization of the total efficiency and minimization of the required net positive suction head of the pump are the two objective functions considered for the optimization problem. The optimization process is carried out on a range of imposed volumetric flow rates, with taking into account at each discretized radius between the hub and tip of the rotor: the profile camber, rotor wall thickness, angular deviation, and the solidity, regarded as geometrical constraints and nominal flow rate as mechanical constraint. Two strategies are proposed in order to solve the problem. In the first one, three forms of mono-objective model with two variables, total efficiency and net positive suction head, are considered. In the second one, a multiobjective model with nondominated sorting scheme is adopted. A comparative evaluation of results obtained from the proposed approach with those of a reference machine and genetic algorithm allowed us to validate the present work.

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Section: Objective Functionsmentioning

confidence: 99%

“…In this case, the host bird can dump the egg or abandon completely the nest and construct another. The phase of changing the nest for the aim of finding a new solution with biased/ selective random walks 26 is given as follows (equations (22) and (23)).…”

Section: Geometric Constraintsmentioning

confidence: 99%

Coupling of inverse method and cuckoo search algorithm for multiobjective optimization design of an axial flow pump

Chikh

Belaidi

Khelladi

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part A:

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show abstract

“…Suppose that the temperature and the pressure are given in advance, as a result, the enthalpy of inlet flow to the turbine and outlet pressure turbine can be determined correspondingly. The temperature and enthalpy in turbine exhaust [33][34], and turbine pressure ratio are obtained by using the following equations:…”

Section: Turbinementioning

confidence: 99%

Evaluating the effect of ammonia-water dilution pressure and its density on thermodynamic performance of combined cycles by the energy-exergy analysis approach

Mohtaram¹,

Lin²,

Chen³

et al. 2017

mech

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“…These efforts were focused on two major fields. In the first, renewable energies were considered as the solution, while the second group attempted to decrease energy consumption of industries and/or use the dissipated energy from these systems [1][2].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, the exhaust steam from steam turbine releases its energy to the environment as it passes through the condenser. Therefore, recovering these wasted energies reduces environmental pollution in addition to reducing fuel consumption [1][2]. The results of a study conducted in the United States indicated that the amount of electricity produced through recovery of thermal energy from industries with high-energy wastes was higher than that of renewable energy sources [3].…”

Section: Introductionmentioning

confidence: 99%

Energy, exergy, and economic analysis of a new triple-cycle power generation configuration and selection of the optimal working fluid

Zeinodini

Ehyaei

2019

Mechanics & Industry

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The present study investigated energy, exergy and economic analyses on a new triple-cycle power generation configuration. In this configuration, the energy of the exhaust gas and the wasted energy in the condenser of the steam cycle is recovered in the heat recovery steam generator (HRSG) and the evaporator of organic Rankine cycle (ORC), respectively. A computer code was written in MATLAB to analyze the triplecycle configuration. Validation through this program showed that the highest errors were 5.6 and 7.1%, which occurred in gas and steam cycles, respectively. The results revealed that the highest generated entropy was associated with the combustion chamber and the evaporator in the steam cycle. The first and second laws of thermodynamics efficiencies were improved by roughly 270 and 8%, respectively, through adding each of the steam and organic Rankine cycles. The entropy generated by the cycle increased by roughly 400 and 4% by adding the steam and organic Rankine cycles, respectively. The price of the produced electricity was also reduced by roughly 60 and 70%, respectively, for these two cycles.

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Thermo-economic optimization of heat recovery steam generator for a range of gas turbine exhaust temperatures

Cited by 32 publications

References 37 publications

Coupling of inverse method and cuckoo search algorithm for multiobjective optimization design of an axial flow pump

Coupling of inverse method and cuckoo search algorithm for multiobjective optimization design of an axial flow pump

Evaluating the effect of ammonia-water dilution pressure and its density on thermodynamic performance of combined cycles by the energy-exergy analysis approach

Energy, exergy, and economic analysis of a new triple-cycle power generation configuration and selection of the optimal working fluid

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