Joint optimization of power plant cycle parameters and gas turbine flow path parameters with blade airfoils represented by cubic splines
| Autor: | Yuri P. Zakharov, A. M. Kler |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Airfoil
Gas turbines Engineering Optimization problem Power station 020209 energy 02 engineering and technology 01 natural sciences Industrial and Manufacturing Engineering 010305 fluids & plasmas Physics::Fluid Dynamics Control theory 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Civil and Structural Engineering business.industry Mechanical Engineering Building and Construction Structural engineering Pollution Spline (mathematics) General Energy business Cubic function Efficient energy use |
| Zdroj: | Energy. 137:183-192 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2017.07.020 |
| Popis: | Normally, optimization of gas turbine unit cycle parameters and optimization of gas turbine flow path are performed separately. This reduces the quality of the obtained optimal solutions. The paper considers an original method of joint optimization of thermodynamic parameters of power plant cycle and flow path parameters. Optimization of a 250 MW gas turbine unit is used to illustrate the methodological approach. The optimization criterion is to maximize power plant energy efficiency. Pressure sides and suction sides of the base airfoils are represented by a spline defined by 70 cubic polynomials. The parameter optimization problem of gas turbine unit cycle and gas turbine flow path includes 121 independent optimized parameters and 184 inequality constraints. The optimization results can be used in the preliminary design of power plants. In this case the obtained airfoils can serve as a good initial approximation for 3D optimization. The research demonstrates that the optimal temperature at gas turbine inlet is determined by the blade alloy characteristics, a cooling method and a shape of airfoils. This confirms the validity of the joint optimization of gas turbine and flow path parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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