Gas Turbines

General Objectives:
To deepen knowledge about gas turbine technology and enhance competency in the selection, operation and maintenance of gas turbines.

Specific Objectives:
At the end of training the trainees will be able:

• To understand gas turbine operation;
• To understand selection criteria based on process and on-site conditions;
• To participate in gas turbine troubleshooting;
• To know how to create a gas turbine maintenance schedule.

CONTEÚDOS

 CONTENTS:

Module I – Gas turbine equipment

• Classification: typical cycles, heavy duty and aerodrivative designs, applications;
• Presentation: main components. Typical machines available on the market;
• Construction and design: compression, combustion, expansion. Rotor dynamics, coupling;
• Auxiliary equipment;
• Internal cooling, lubrication, control system, safety devices.

Module II – Performance

• Thermodynamics: ideal and actual gas, behavior during compression and expansion, isentropic and polytropic processes;
• Centrifugal and axial compression. Performance, stability and other limits;
• Combustion: types of combustors, combustion operation. Influence of fuel type. Afterburning for cogeneration purposes. Low NOx designs;
• Expansion: single ou double shaft design operation;
• Performance influence of atmospheric conditions, fuel selection. API charts;
• Available load characteristics: rotation speed, T3 firing temperature, IGV influences. Open cycle, combined cycle examples;
• Case studies: actual performance vs basic design; troubleshooting.

Module III – Selection

• Selection criteria according to availability, operational and maintenance requirements;
• Bidding: significant information for data sheet definition.

Module IV – Operation

• Start-up and shutdown operation: sequences and trips;
• Air filtering, lubrication and fuel systems operation;
• Performance monitoring and mechanical operation;
• Maintenance during operation: compressor cleaning devices;
• Maintenance objectives and scheduling: operation, load, fuel influences; inspection schedules;
• Factors related to available load: rotation speed, T3, IGV. Typical approaches related to Brayton cycle, cogeneration (combined cycle).