Turbomachinery Package Specification

Taurus 60 Compressor Set and Mechanical Drive

 

 

3.1.1Principles of Operation

During the typical combustion process (Figure 4), air is drawn into the gas turbine air inlet and is compressed by the multi-stage, axial-flow engine compressor. The compressed air is directed into the annular combustion chamber at a steady flow. Fuel is injected and mixed with the compressed air and ignited during the start cycle. Continuous combustion will be maintained as long as there is an adequate flow of pressurized air and fuel. Hot- pressurized gas from the combustor expands through and drives the turbine, dropping in pressure and temperature as it exits the turbine. This combustion cycle converts the energy in the fuel into kinetic rotating power at the turbine output shaft.

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 Process3.1.2SoLoNOx Combustion System (Optional)

In addition to the conventional combustion system, Solar’s proprietary SoLoNOx dry emissions system 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 works with customer’s to meet local permitting emission requirements.

Table 2. Taurus 60 CSMD Gas Turbine Specifications

Compressor

 

Type

 

Axial Flow

 

 

Number of Stages

 

12

 

 

 

Compression Ratio

 

12.2:1

(Compressor Set)

 

 

 

11.5:1

(Mechanical Drive)

 

 

 

 

Flow (Nominal)

 

21.3 kg/sec (47.0 lb/sec)

(Compressor Set)

 

 

21.1 kg/sec (46.5 lb/sec)

(Mechanical Drive)

 

 

 

 

Combustion Chamber

 

 

 

 

Type

 

Annular

 

 

Ignition

 

Torch

 

 

 

Number of Fuel Injectors

 

12

 

 

 

Gas Producer Turbine

 

 

 

 

Type

 

Reaction

 

 

Number of Stages

 

2

 

 

 

Maximum Speed

 

15,000 rpm

 

 

© 2009 Solar Turbines Incorporated. All rights reserved.

 

 

TPS60CSMD/309

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