CAT Titan 250 Manual De Usuario

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Turbomachinery Package Specification 
Titan 
250 Generator Set 
For combustion, the gas turbine requires approximately one-fourth of the total air it 
compresses. The excess air is mixed with the combustion products to reduce the gas 
temperature at the turbine first stage-inlet. The cooling air also keeps metal temperatures 
in the combustor and turbine assembly relatively low to ensure a long service life. 
 
 
Figure 4.  Typical Combustion Process 
 
3.1.2 
SoLoNOx Combustion System 
The  Titan 250 incorporates Solar’s proprietary SoLoNOx dry emissions system that 
reduces pollution by limiting the formation of nitrous oxides (NOx), carbon monoxide 
(CO), and unburned hydrocarbons (UHC). This system uses lean premix combustion to 
lower the maximum flame temperature and reduce pollution formation. Solar’s 
engineering staff will work with the customer to meet local permitting emission 
requirements. 
 
Table 1. 
Titan 250 Gas Turbine Specifications 
Compressor 
Type Axial 
Flow 
Number of Stages 
16 
Compression Ratio 
24:1 
Flow (Nominal) 
67.3 kg/sec (148 lb/sec) 
Speed, Maximum 
10,500 rpm 
Combustion Chamber 
Type Annular 
Ignition Torch 
Number of Fuel Injectors 
14 (SoLoNOx, Low Emissions) 
Gas Generator 
Type Axial 
Number of Stages 
Power Turbine 
Type Axial 
Number of Stages 
Speed 7000 
rpm 
Bearings 
Radial 
5 Tilt Pad with Proximity Probes 
Thrust 
2 Tilt Pad with Resistance Temperature Device 
Probes 
 
© 2008 Solar Turbines Incorporated. All rights reserved. 
TPS250GS/908 - Preliminary 
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