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1 edition of Effect of blade cooling on performance of a gas turbine power plant found in the catalog.

Effect of blade cooling on performance of a gas turbine power plant

by Bernard L. Buteau

  • 289 Want to read
  • 14 Currently reading

Published by Massachusetts Institute of Technology .
Written in English

    Subjects:
  • Mechanical engineering

  • Edition Notes

    Thesis (NE)--Massachusetts Institute of Technology, 1955.

    ID Numbers
    Open LibraryOL24994649M

      A gas turbine is a dynamic internal combustion engine. When we compare the performance of a gas turbine to that of a steam turbine, it becomes immediately evident that steam turbine performance is much easier to calculate, since both the vapor and the vapor conditions are fixed. For a gas turbine, the vapor condition depends on the type of fuel used and the atmospheric . Literature shows that in existing gas turbine blade cooling models the effect of radiation from higher temperature gases is usually neglected. for a gas turbine power plant is a major.

    Analyses of gas turbine plant performance, including the effects of turbine cooling, are also calculated. If the value of blade temperature at the blade tip is assumed to be limited by material considerations to maximum blade temperature, then the elementary coolant . Abstract. The parametric study of thermodynamic performance on gas power plant. The variation of operating conditions, exhaust temperature. Gas turbine inlet air cooling has been considered for the power output and efficiency of gas turbine during hot seasons.

    Modern gas turbine firing temperatures (– K) are well beyond the maximum allowable blade material temperatures. Continuous safe operation is made possible by cooling the HP turbine first stages, nozzle vanes and rotor blades, with a portion of the compressor discharge air, a practice that induces a penalty on the thermal efficiency cycle. This study aims to investigate the effect of regeneration on the output power and the thermal efficiency of the gas turbine power plant. The effect of ambient air temperature, regeneration effectiveness, and compression ratio on the cycle thermal efficiency was also investigated. An existed gas turbine power plant of AL ZAWIA is used as a base in this study, and the calculations were carried.


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Effect of blade cooling on performance of a gas turbine power plant by Bernard L. Buteau Download PDF EPUB FB2

Title = {Effect of blade cooling on performance of a gas turbine power plant. Technical report No. 7}, abstractNote = {The basic powerplant studied in this investigation is composed of a compressor, a burner, a cooled turbine, and an uncooled turbine. Each turbine is composed of an infinite number of infinitesimal impulse stages of polytropic efficiency eta/sub p/.

Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Effect of blade cooling on performance of a gas turbine power plant. The Effect of Turbine Blade Cooling on the Performance of Recuperative Cycles for Gas Turbines Applications Article (PDF Available) January with 1, Reads How we measure 'reads'.

Effect of blade cooling on performance of a gas turbine power plant. by Buteau, Bernard :   In this work the impact of the turbine air cooling requirements on different recuperative cycles efficiencies is investigated.

A thermodynamic cycle analysis tool capable to calculate the performance of gas turbines cycles with and without the inclusion of the effects of cooling air flow rates is by: 1.

The most important parameter to increase the life of the turbine blade is the cooling of the blade, which is necessary after reaching a certain temperature of the gases passing through the blades.

Various types of cooling models are available for a turbine blade cooling. The power output of a gas turbine depends on the mass flow rate through it. In turbine blade film cooling, relatively cool air is injected from the inside of the blade to the outside surface, which forms a protective layer between the blade surface and hot mainstream.

These film-hole patterns (i.e., film-hole location, distribution, angle, and shape) affect film-cooling performance. Although cooling of turbine blades is necessary to ensure the longevity and high efficiency of the turbine, there exist three possible mechanisms which reduce the efficiency as a result of cooling.

Firstly, cooling air increases aerodynamic drag of the blades. The CES Zero Emissions Power Plant; ASU and Turbine Compressor Matching; Effect of Drive Gases on Gas Turbine Operating Parameters; Effect of Coolant on Gas Turbine Blade Temperatures; Gas Turbine Operation with CES Gases versus Air-Breathing Gases; Turbine Materials Issues.

Gas Turbine Performance Computation Bibliography Major Variables for a Gas Turbine Application Type of Application Plant Location and Site Configuration Plant Type Gas Turbine Size and Efficiency Type of Fuel Enclosures Plant Operation Mode: Turbine Blade Cooling Design In conventional gas turbine systems, Horlock et al.

() consider the effect of cooling flows on conventional gas turbine performance, using a cooling model with parameters typical of contemporary gas turbines. Assuming a representative (maximum) blade metal temperature of °C with cooling, the authors calculate the difference in engine efficiency between the cooled case and a corresponding.

The effect of wake passing on the showerhead film cooling performance of a turbine blade has been investigated experimentally.

The experiments were performed in an annular turbine cascade with an upstream rotating row of cylindrical rods. plants. The thermal efficiency depends on the all equipment (turbines, boilers, pump, etc.) performance so how the equipment are efficient thermal efficiency and cost are optimum.

The most important items of a power plant are steam or gas turbines therefore their. Modern gas turbines firing temperatures (K) are well beyond the maximum allowable blade material temperatures. Continuous safe operation is made possible by cooling the HP turbine first stages -nozzle vanes and rotor blades- with a portion of the compressor discharge air, a practice that induces a penalty on the cycle thermal efficiency.

The effect of a change of exactly these parameters on the film cooling performance will be analyzed. For a better assessment of the characteristic effects associated with contouring of the hole, every diffuser hole is compared to an adequate cylindrical hole.

Alok Ku Mohapatra, undefined Sanjay, Analysis of Combined Effects of Air Transpiration Cooling and Evaporative Inlet Air Cooling on the Performance Parameters of a Simple Gas Turbine Cycle, Journal of Energy Engineering, /(ASCE)EY.

Nowadays, instead of adiabatic analysis, conjugate heat transfer (CHT) algorithm has been widely recognized to study the combined effects of solid conduction and film cooling, because in real cooling process of gas turbines, the solid conduction of metal components is often and Zhao investigated the film cooling performance of a flat plate using CHT analysis, and revealed.

additional gas turbine power generation. Get it right and you can ensure your gas turbines always operate effectively under optimal operating conditions, so they don’t work so hard, potentially extending their service life and minimizing maintenance.

Get it right and you will also save cost on filter replacement and reduced blade erosion. In this paper, a generic high-pressure turbine (HPT) blade of a gas turbine, which is cooled by film cooling in conjunction with internal convective cooling, has been analysed by solving Navier-Stokes and energy equations.

The intricate internal cooling passages and a series of holes on the suction surface are considered for the simulations. 1 Effect of Ambient Temperature on Performance of Gas Turbine Engine Yuan Liu1, Avisekh Banerjee1, Amar Kumar2 Alka Srivastava2 and Nita Goel2 1 Life Prediction Technology Inc., Polytek Street, Ottawa, ON, K1J 9J1, Canada 2 Tecsis Corporation, Colonnade Road, Ottawa, ON, K2E 7K3, Canada ABSTRACT Health monitoring data, namely power output and exhaust gas.

A gas turbine, also called a combustion turbine, is a type of continuous and internal combustion main elements common to all gas turbine engines are: an upstream rotating gas compressor; a combustor; a downstream turbine on the same shaft as the compressor.; A fourth component is often used to increase efficiency (on turboprops and turbofans), to convert power into .and the thermal efficiency of the gas turbine power plant.

The effect of am-bient air temperature, regeneration effectiveness, and compression ratio on the cycle thermal efficiency was also investigated. An existed gas turbine power plant of AL ZAWIA is used as a base in this study, and the calculations were carried out utilizing MATLAB code.Laser-drilled cooling holes in the gas turbine blade – the air exiting here creates a cooling film during operation.

©Siemens The output of the turbine is improved by increasing the critical parameters of temperature and pressure; this can only be achieved using new materials of construction and optimised cooling and layering technologies.