Siemens Industrial Trent 60*

Power Generation: 53.1 - 66.0 MW(e) / Mechanical Drive: 54.2 - 62.3 MW

The Siemens Industrial Trent 60* is the most advanced aeroderivative gas turbine available today. Delivering up to 66MW of electric power in simple cycle service, at 42 percent efficiency, the Siemens Industrial Trent 60 has established a new benchmark for fuel economy and cost savings.

It also offers operators fast delivery and installation times and beneficial performance.

Mechanical Drive Applications

The Siemens Industrial Trent 60 is also available for onshore or offshore mechanical drive applications. The Siemens Industrial Trent 60 is ideally suited to meet the higher power, variable speed demands required by applications like natural gas liquefaction, gas transportation and gas injection for oil recovery.

The design flexibility of the Siemens Industrial Trent 60 allows the same engine that serves the power generation market to meet the needs of mechanical drive service with no design changes.

Technical Data

Siemens Industrial Trent 60 DLE: Performance data for simple cycle power generation
50 Hz 50 Hz with ISI 60 Hz 60 Hz with ISI
Power output 53.1 MW(e) 63.5 MW(e) 54.0 MW(e) 61.8 MW(e)
Fuel Natural gas only; other fuels on request
Frequency 50 Hz 50 Hz 60 Hz 60 Hz
Gross efficiency 42.0% 43.2% 42.5% 43.4%
Heat rate 8,488 kJ / kWh 8,322 kJ / kWh 8,465 kJ / kWh 8,300 kJ / kWh
Turbine speed 3,000 rpm 3,000 rpm 3,600 rpm 3,600 rpm
Pressure ratio 34.5 : 1 37.9 : 1 33.6 : 1 36.2 : 1
Exhaust mass flow 155 kg / s 177 kg / s 158 kg / s 168 kg / s
Exhaust temperature 433° C (812° F) 416° C (782° F) 431° C (808° F) 421° C (789° F)
NOx emissions ≤ 25 vppm at 15% O2 on fuel gas (with WLE and DLE)
Note: ISI – Inlet Spray Intercooling (wet compression water to the compressor inlet)
Siemens Industrial Trent 60 WLE ISI: Performance Data for simple cycle power generation
50 Hz with ISI 60 Hz with ISI
Power output 66.0 MW(e) 65.7 MW(e)
Fuel Natural gas, liquid fuel, dual fuel; other fuels on request
Frequency 50 Hz 60 Hz
Gross efficiency 41.5% 41.1%
Heat rate 8,669 kJ / kWh 8,760 kJ / kWh
Turbine speed 3,000 rpm 3,600 rpm
Pressure ratio 39.0 : 1 38.0 : 1
Exhaust mass flow 180 kg / s 172 kg / s
Exhaust temperature 416° C (781° F) 426° C (799° F)
NOx emissions ≤ 25 vppm at 15% O2 on fuel gas (with WLE and DLE)
Note: Water injected. ISI – Inlet Spray Intercooling
Siemens Industrial Trent 60: Performance data for combined cycle power generation
DLE 50 Hz DLE 50 Hz with ISI WLE 50 Hz with ISI DLE 60 Hz DLE 60 Hz with ISI WLE 60 Hz with ISI
Net power output 65.3 MW(e) 77.7 MW(e) 82.9 MW(e) 66.4 MW(e) 77.5 MW(e) 80.3 MW(e)
Net plant efficiency 53.6% 53.4% 51.2% 53.5% 53.5% 50.7%
Net heat rate 6,718 kJ / kWh 6,736 kJ / kWh 7,022 kJ / kWh 6,725 kJ / kWh 6,727 kJ / kWh 7,093 kJ / kWh
Pressure / reheat Dual / No Dual / No Dual / NO Dual / No Dual / NO Dual / No
Note: Siemens Industrial Trent WLE – water injected. ISI – Inlet Spray Intercooling. All combined cycle performance is based on 2 pressure, no reheat.
Siemens Industrial Trent 60: Performance data for mechanical drive applications
Siemens Industrial Trent 60 DLE  Siemens Industrial Trent 60 WLE
Power output 54.2 MW 61.8 MW
Fuel Natural gas only; other fuels on request Natural gas, liquid fuel, dual fuel; other fuels on request
Efficiency 43.6% 41.9%
Heat rate 8,255 kJ / kWh 8,586 kJ / kWh
Turbine speed 3,430 rpm 3,430 rpm
Pressure ratio 34.3 : 1 36.1 : 1
Exhaust mass flow 154.4 kg / s 164.2 kg / s
Exhaust temperature 428° C (802° F) 431° C (807° F)
NOx emissions ≤ 25 vppm at 15% O2 on fuel gas (with WLE and DLE)
Note: Siemens Industrial Trent WLE – water injected.

Technology

The Siemens Industrial Trent, which is the most powerful and efficient aero-derivative gas turbine, is used primarily in two important markets, power generation and oil and gas. Both markets value the ability of this product to generate clean, efficient electrical or mechanical power, which ever is desirable.

To enable the Siemens Industrial Trent to operate with very low emissions at maximum power a number of enabling technologies have been developed.

In order for the combustion system to operate with the lowest emissions it must operate at a specific flame temperature, balancing the generation of oxides of Nitrogen (NOx) with the generation of Carbon monoxide (CO). This is very difficult if fuel and air are injected (diffused) directly into the combustion chamber, and therefore a technology known as pre-mixing is utilised. The fuel and air are (pre) mixed to create a uniform mixture that, once it enters the combustion chamber, is ideal for complete low emissions combustion.
Achieving low emissions also brings the problem of combustion noise. Noise is generated when the flame in the combustor is operating very lean, where flame pertubations (oscillations) couple with the natural frequency of the surrounding components. A similar phenomena happens when a musical wind instrument is played, where the pertubations of the air blown into the mouthpiece couple with the natural frequency of the instrument. A passive damping technology addresses this destructive force, where dampers of specific natural frequencies literally ‘cancel out’ the force.

To enable the Siemens Industrial Trent to generate as much power as possible, an Inlet Spray Intercooling System injects clean water droplets into the compressor. As the water droplets continue through the compressor they ‘cool’ the air, which is beneficial for the engine thermodynamically. This is because the cycle requires much less energy to compress cooler air than hotter air, leading to more energy for the customer. Spraying water droplets into the front of an engine that is rotating at up to 10,000 rpm can lead to significant damage, in the form of erosion. To address the issue of erosion we apply our expertise in aerodynamic design to strategically place water droplets in specific places in the compressor. In conjunction with its suppliers, we’re also developing various specialist coatings to counteract the destructive force of erosion, allowing for maximum power extraction.

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