Gas Turbine Manufactures

GE Siemens Ansaldo Gas Turbine

GT Size MW GT Size MW GT Size MW

Fr.1 5.07 V64.3 63 AE64.3A 75

Fr.3 10.45 V84.2 106 AE94.2 170

Fr.5 26.3 V84.3 154 AE94.2K 170

Fr.6 38.36 V94.2 156 AE94.3A 294

Fr.6FA 71 V94.3 222 Fr.7E 80.6 Fr.9 123.4

Fr.9F 221 Ansaldo Gas Turbine Gas Turbines - Features

Thermodynamic data @ ISO base load AE64.3A AE94.2 AE94.2K AE94.3A

Power output at gen. term. [MW] 75 170 170 294

Efficency at gen term. [%] 35.9 34.9 36.5 39.7

Exhaust gas mass flow [kg/s] 213 537 540 702

Exhaust gas temperature [C] 574 541 545 580

Turbine inlet temp. acc. to ISO 2314 [C] 1190 1075 1060 1230

Pressure ratio [-] 16.7 11.9 12.0 18.2

In particular, besides the conventional fuels such as:

natural gas

light distillate

also special applications for burning

syngas, refinery gases, blast furnace gases

hydrogen enriched fuels

(in connection with CO2 sequestration projects)

naphtha

heavy oil

are fully available for our gas turbines. In addition, the possibility to perform frequent and fast start up/shut down and the capability to sustain grid frequency variation and high transient modes, such us load rejection and island mode, make the gas turbines fundamental helpers of the electrical grid.

Steam Turbines Features

Application Speed

(hz) Basic

Configuration

Output Range (MW)

Max. Main Steam Data

Pressure (bar)

Temperature (C)

RH Combined Cycle Power Plants

50 60

TC - DF 150-300 170 565

RH Combined Cycle Power Plants

50 60

TC - SF 100-200 170 565

RH Combined Cycle Power Plants

50 60

SC - SF 40-100 125 540

RH Combined Cycle Power Plants

50 60

TC - DF 100-250 125 540

RH Combined Cycle Power Plants

50 60

SC - SF 40-150 125 540

GE 9FA Heavy Duty Gas Turbine

The most experienced F-class 50 Hz product

First introduced in 1992, the 9FA heavy duty gas turbine is a popular choice for combined cycle,

cogeneration, or simple cycle plants where flexible operation and high performance are prime

considerations.

Designed for 50 Hz applications, this advanced technology turbine delivers power with high

efficiency, availability, reliability, and low emissions. The 9FA gas turbine provides the flexibility required

today in many regions for power that can be rapidly adjusted to compensate for changes in renewable

generation, demand or use. It provides the plant operator with choices to best meet fluctuating power

demands.

Features & Benefits

The Enhanced Compressor increases reliability and availability, and reduces periodic inspections and maintenance costs.

Dry Low NOx (DLN) 2.6+ combustion system .

Blade Health Monitoring System

Cooling Optimization

Fast Start reduces start time of the gas turbine across the entire start sequence. For simple cycle, this product option delivers a 15-minute start to full load. For combined cycle power plants, this production option reduces the start time of the power plant by as much as 20 min.

Application

GE Energy's wide range of flexible power generation applications for the 9FA gas turbine include simple

cycle, combined cycle, and cogeneration in both cyclic and baseload operation using a wide range of

fuels.

Combined Cycle applications are common in today's power plants. The gas turbine generator

produces electricity and captures the waste heat to make steam to generate additional electricity via

a steam turbine. Today, 95% of the 9FA gas turbine fleet is operating in combined cycle mode.

Cogeneration is the production of electricity and useful thermal energy simultaneously from a

common fuel source. The rejected heat from industrial processes can be used to power an electric

generator. Surplus heat from an electric generator can be used for industrial processes or for

heating purposes.

Integrated Gasification Combined Cycle (IGCC) is the production of electricity from combined cycle

gas turbine power plant operating on synthesis gas (syngas) derived from gasification of coal or

other fossil fuels. In this case, the 9FA gas turbine is configured as a 9F syngas turbine with GE's

Multi-Nozzle Quiet Combustor (MNQC) for operation on syngas or high hydrogen fuels, enabling

carbon capture and sequestration (CCS) or use of CO2 for enhanced oil recovery (EOR).

Integrated Water and Power Plant (IWPP) is the co-production of electricity and water in a single

plant. Potable water is generated using the thermal energy in the gas turbine exhaust to drive

desalination.

Design

The 9FA heavy duty gas turbine is aerodynamically scaled from 7FA gas turbine. It uses advanced

aircraft engine technology in its design. Key advantages of the 9FA gas turbine include its fuel-flexible

combustion system and high output performance.

Dry Low NOx (DLN) 2.6+ combustor

Eighteen-stage, axial flow compressor is designed with an ISO base pressure ratio of 17:1 and

airflow of 203 kg/second. High strength, corrosion resistant stainless steel airfoil material is used on

the first eight stages with the remaining airfoils made of steel alloy.

Advanced controls - Model Based Control (MBC)

Specifications

Output (MW): 261 simple cycle, 791 combined cycle

Baseload Efficiency (%): 37.3 simple cycle, 57.4 combined cycle

Emissions: 25 ppm NOx and CO

Emission Compliant Turndown (% Baseload): 45 simple cycle, 35 combined cycle

Start Time (minutes/Hot Start): 15 simple cycle, 34 combined cycle

Combustion Interval (hours/starts): 24k/450

HGP Interval (hours/starts) - 24k/900

Rotor Life (hours/starts): 144k/5000.