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GAS TURBINE
INTRODUCTION
OPERATING PRINCIPLE
TYPES OF GAS TURBINE
FACTORS INFLUENCING GAS TURBINE SELECTION
INDUSTRY STANDARDS / SPECIFICATION
BMS DOCUMENTS
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INTRODUCTION
An Internal Combustion Rotating Machine whichproduces useful work for industrial processes.
Commonly used in Oil & Gas Industry for MechanicalDrive application and for Power Generation
Self sufficient system Capable to compress air, enrichenergetic power of air and convert power to usefulmechanical energy
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INTRODUCTION
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Operating Principle
Brayton Cycle Thermodynamic cycle according to which gas turbine works
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Operating Principle
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Operating Principle
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Operating Principle
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Operating Principle
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Operating Principle
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Types of Gas Turbines
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A) Construction Industrial Heavy Duty Gas Turbines
Aero-derivative Gas Turbines
B) Drive System
Single Shaft
Multiple Shaft
C) Based on Thermodynamic Cycle
Simple Cycle
Regenerative Cycle
Combined Cycle
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Types of Gas Turbines
Industrial Heavy Duty Gas Turbines
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Heavy, housed in rugged construction
Very High Single Unit Capacity
Compression ratio relatively low - 8:1 to 16:1
More tolerant to low quality fuel
Large Unit with Higher Exhaust Temperature allow Cogeneration/CombinedCycle
Lower capital Cost
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Types of Gas Turbines
Aero Derivative Gas Turbines
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Light weight
Relatively low Single Unit Capacity
High compression ratio13:1 to 33:1
Not suitable for low quality fueldegradation of performance over time is rapid
Lower Exhaust Temperature limits cogeneration capability Higher power boost possible with steam injection
Higher Capital Cost
High Technology maintenance is required at vendors shop.
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Types of Gas Turbines
- Single Shaft Gas Turbine For generator applications
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Types of Gas Turbines
- Multiple Shaft Gas Turbine for mechanical drive applications
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Types of Gas Turbines
-SimpleCycle Gas Turbine
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Types of Gas Turbines
- Regenerative Cycle Gas Turbine
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Types of Gas Turbines
- Combined (Co-generative) Cycle Gas Turbine
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GAS TURBINE SELECTION
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Service & Application
Power generation or Mechanical Drive
Continuous or Intermittent Requirement of Co-generation
Off-shore or On-shore
Ambient Conditions
Temperature
Atmospheric Pressure / Altitude
Relative Humidity Fuel Type
Natural gas
Diesel Oil, Heavy Fuel Oil
Dual Fuel
Pressure Drop in the Inlet / Exhaust System
Environmental Emission Regulation
Availability of Technical Services & Supports
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GAS TURBINE SELECTION(Ambient Condition Inlet Air Temperature)
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(Ambient Condition Atmospheric Pressure)
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(Ambient Condition - Humidity)
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GAS TURBINE SELECTION
(Fuel Type)
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GAS TURBINE SELECTION
(Pressure Drop in Inlet & Exhaust)
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GAS TURBINE SELECTION
ISO Standard Rating Continuous power developed by
gas turbine under the following standard conditions atISO-rated firing temperature
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GAS TURBINE SELECTION
Site Rated Power The following are considered for
calculating realistic site rated power.
Power Requirement of Driven Equipment
Site Ambient Conditions DeratingAmbient Pressure, Temperature, Humidity
Margin for losses within Gas TurbineAPI 617 margin for Air Compressor, Air
Compressor Fouling, Aging, Inlet & Exhaust Losses, Additional Loss for WHRU,
Gear Box Losses
Type of fuel (gas or liquid) and combustor
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GAS TURBINE SELECTION
Gas Turbine Auxiliaries
Air Intake Systems & Exhaust System
Fuel Gas Conditioning System
Starting System
Acoustic Enclosure & Ventilation System
Lubrication System
Control System
Cleaning SystemOnline & Offline
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INDUSTRY STANDARDS / SPECIFICATION
INTERNATIONAL
API API 616, 2011Gas Turbines for Petroleum, Chemical & Gas Industry
API API RP11 PGTPackaged Gas Turbine
ASME ASME PTC 22Performance Test Code on gas Turbine
ISO ISO 2314Gas Turbines - Acceptance Tests
COMPANY / PROJECT SPECIFICATION
SHELL DEP 31.29.70.11 SHELL DEP 31.29.70.31
SHELL DEP 31.29.70.32
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GAS TURBINE BMS DOCUMENTS
PEC-BMS-EN-FRM-M-0796 Mechanical: Checklist: Bid Evaluation of GAS
TURBINE
PEC-BMS-EN-STN-M-4550 Technical Bid Evaluation FormatGAS TURBINE
GENERATOR PACKAGE
PEC-BMS-EN-GDE-M-4547 Inter-Discipline Scope Matrix for GAS TURBINE
GENERATOR PACKAGE
PEC-BMS-EN-STN-M-4551 Supplier Document Requirement List (SDRL) - GAS
TURBINE GENERATOR PACKAGE
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