The LM2500+G4 SAC 50Hz Simple Cycle is a fourth-generation aeroderivative gas turbine of the LM2500. Designed for industrial power applications, including those in the oil and gas sector, it delivers more output and greater thermal efficiency while retaining the ease of maintenance and high reliability the LM2500 series is known for.

In a simple cycle configuration, the gas turbine generates power directly by expanding hot gases through the turbine stages, without recovering heat for additional power generation. This design is favored for its simplicity, lower capital cost, faster start-up, and suitability for mobile or remote applications.

The LM2500+G4 improves upon its predecessor by increasing airflow and turbine cooling capacity, allowing for higher operating temperatures. These changes result in up to 40% thermal efficiency in simple cycle mode—an impressive figure for this class of turbine. This translates to improved fuel usage and reduced operational costs over time.

The engine features a Single Annular Combustor (SAC), which supports stable combustion with low emissions of nitrogen oxides (NOx) and carbon monoxide (CO). The combustor is also designed for durability and long life, with easily replaceable fuel nozzles and a thermal barrier coating for resistance to high temperatures and corrosion.

Its two-spool design means the engine has no cold start limitations, making it well-suited for harsh or variable environments. The power turbine and gas generator can be separated, allowing for easier in-module repairs and less downtime.

Overall, the LM2500+G4 SAC 50Hz Simple Cycle offers a balance of power, efficiency, and maintainability, making it an attractive solution for power generation and mechanical drive needs in industrial, onshore, and offshore oil and gas operations.

The 2” Globe-Style Gas Metering Valve is designed to provide precise regulation of fuel gas flow in industrial and aero-derivative gas turbines. Its globe valve design offers excellent throttling capabilities, allowing fine control over fuel delivery to maintain the optimal fuel-to-air mixture necessary for efficient combustion. This precise control is crucial for achieving stable turbine performance, reducing emissions, and optimizing fuel consumption.

Constructed with robust materials, the valve is built to withstand the high pressures and temperatures commonly encountered in gas turbine applications. Its durable design ensures long service life and reliable operation even under demanding conditions. The valve features foolproof electrical cables and connectors, enhancing installation safety and reducing the risk of connection errors.

The valve’s compact size and right-angle configuration facilitate straightforward integration into existing turbine fuel systems. Compared to previous models, this valve is an upgrade due to its improved electrical interface and enhanced durability, which reduce maintenance needs and increase operational reliability.

By accurately controlling fuel flow, the 2” Globe-Style Gas Metering Valve helps prevent issues such as flame instability and combustion inefficiency, contributing to smoother turbine operation and lower maintenance costs. It is widely used across various turbine models, including aero-derivative and small- to mid-frame industrial turbines, where precise fuel metering is critical for maintaining performance and compliance with environmental standards.

The LM2500+G4 SAC 50Hz Combined Cycle 1x1 is a gas turbine system that combines a gas turbine with a steam turbine to improve overall power generation efficiency. This configuration captures waste heat from the gas turbine exhaust and uses it to produce steam, which then drives the steam turbine, generating additional electricity. This approach helps maximize power output while making better use of fuel energy.

Building on the LM2500+ design, the LM2500+G4 increases power capability by about 10% without reducing the lifespan of critical hot section components. This is achieved by increasing airflow, enhancing materials, and improving internal cooling. Despite these upgrades, the core compressor and turbine stages, as well as most airfoil and combustor designs, remain consistent with the LM2500 model.

The LM2500+G4 features a 17-stage high-pressure compressor that raises the engine’s pressure ratio and airflow, boosting the total power output of the gas turbine to over 31 MW. It uses a Single Annular Combustor (SAC) equipped with water injection to help control emissions while maintaining stable combustion. The SAC’s simple, proven design provides uniform flame temperature and reliable operation.

This balanced system is common in industrial and energy applications where efficiency and power output must be optimized, especially under varying ambient conditions. The combined cycle setup offers a reliable and efficient solution for electricity generation in demanding environments.

The LM2500 is a multi-shaft gas turbine featuring a free-spinning power turbine, making it well-suited for dynamic and high-demand environments such as those found in oil and gas operations. In this design, the high-pressure turbine and compressor are mechanically independent from the low-pressure power turbine. This separation allows the power turbine, which drives the electric generator or mechanical load, to respond rapidly to changes in load demand. Its ability to accelerate quickly makes it ideal for applications where maintaining grid stability or mechanical output is critical. In scenarios where frequency fluctuations occur, the free power turbine can quickly compensate, helping to stabilize the grid and ensure smoother operation of all connected systems.

In its standard configuration, the LM2500 is equipped with a six-stage, low-speed power turbine. This turbine operates at a nominal speed of 3600 rpm and is designed to deliver reliable shaft power in steady-state conditions, making it particularly effective for electric power generation or mechanical drive in pipeline and process operations.

For applications requiring greater flexibility or higher continuous output speeds, the LM2500+G4 variant offers enhanced capabilities. It is available with either the standard six-stage, low-speed power turbine or an alternative two-stage high-speed power turbine. The high-speed variant is engineered for mechanical drive and other demanding industrial uses, with a design speed of 6100 rpm and an operating range from 3050 to 6400 rpm. This configuration supports continuous high-speed shaft output where needed and is particularly beneficial for compressors and other rotating equipment in oil and gas facilities.

Both the six-stage and two-stage power turbines can be operated over a cubic load curve, providing the adaptability required for variable load profiles commonly encountered in oil and gas operations. This flexibility, combined with the LM2500’s rapid response characteristics and modular design, makes it a dependable choice for critical infrastructure in upstream, midstream, and downstream sectors.