Topics: Gas turbine, Turbine, Electricity generation Pages: 50 (4340 words) Published: December 2, 2012
FT8 Gas Turbine
Aeroderivative Gas Turbine
for Industrial Applications

Engineering the Future –
since 175 8.

MAN Turbo


1 FT8 on base frame during workshop assembly
2 Cutaway view of the FT8 (with standard combustion system)


MAN Turbo offers the world’s most comprehensive product line of compressors and turbines. Innovation, ongoing development and modern technology guarantee the competitiveness of our products (single source solutions) for the lifetime of a machine.

Gas turbines have been included in the range of products since 1988. In 1990, the gas turbine product line was expanded by adding the FT8 gas turbine through signing a co-operation agreement with Pratt& Whitney Power Systems (PWPS). With the FT8 gas turbine, MAN Turbo offers a prime mover, enabling customers to obtain the reliable, environmentally sound and economic technology they require for a variety of their applications.



FT8 Gas Turbine

The LPC (Low Pressure Compressor)

By mid-2008 more than 370 of the

has 8 rotor stages and 7 stator stages.

“Standard Combustion System” which

extremely successful FT8 gas turbine

The inlet guide vanes as well as the first

permits the use of various gaseous and

packages had been delivered or were on

two stator vane stages have been fitted

liquid fuels – with different specifications

order. The highly efficient FT8 gas turbine

with variable geometry. Variable vane

as well as combinations in any percent-

The basic version comprises a so-called

consists of a GG8 gas generator and a

movement provides optimum efficiency

age mix and thereby offering high fuel

PT8 power turbine (also referred to as a

for the compressor over the complete


“free-running” turbine). The gas genera-

speed range and excellent part-load

tor provides high-energy gas to the power

efficiency. The LPC rotor is connected

A DLN (DryLowNOx) combustion system

turbine, where this gas performs work

to the 2-stage LPT (Low Pressure

for gaseous fuel operation is available as

when mechanically coupled to a driven

Turbine) rotor by the LP-shaft which is

an option. The extremely robust DLN

load through a flexible coupling.

conducted through the tubular HP-shaft

system allows quick load changes and is

connecting the HPC (High Pressure

insensitive to changing gas compositions

GG8 - Gas Generator


and ambient conditions.

The two-shaft gas generator has been

Pressure Turbine).





derived from the latest version of the most

Standard Combustion System

successful aero-engine in commercial

The HPC consists of seven rotor stages

In the case of the standard combustion

service, the Pratt&Whitney JT8D-219,

and seven stator stages and is driven by

system the combustion section has nine

which has achieved highest recorded

the single-stage HPT. W ith this arrange-

chambers (cans) arranged in an annulus

sales of >14,500 engines.

ment the LP-system and HP-system are

around the turbine shafts and positioned

running at their own optimum speed

between the High Pressure Compressor

without mechanical interaction.

and the High Pressure Turbine. The

The major components of the gas
generator are the two compressor

combustion chambers are enclosed by

modules (LP and HP), the combustion

Combustion System

inner and outer casings. The outer casing

section and the two turbine modules

Depending on the application the FT8

can be unbolted and moved rearward to

(HP and LP).

gas turbine can be equipped with two

allow for easy inspection or removal of

different combustion systems.

the combustion chambers and fuel

1 Combustion section with bur ner cans (standard
combustion system)
2 FT8 gas turbine on base frame with DLN
combustion system

Two combustion chambers...
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