Steam turbines and gas turbines grew from different engineering problems, different working fluids, and different cycles. Together, the Rankine and Brayton families now sit at the heart of many of the complex turbomachinery packages used in power generation and process industries.
Few machines have done more to define modern industry than the turbine. By converting heat and pressure into continuous rotating power at large scale, steam and gas turbines moved ships and aircraft, energized national grids, and drove the compression at the core of the process world. The three areas below show where this technology has had the broadest reach.
Turbines are the backbone of electricity supply. Steam turbines anchor central power stations and convert reactor heat in nuclear plants, while gas turbines provide fast, flexible grid-scale generation. In combined-cycle and cogeneration plants the two cycles work together, recovering exhaust heat to lift overall efficiency and deliver both power and process steam from a single fuel input.
Across refining, petrochemicals, and gas handling, turbomachinery drives the compression that keeps continuous processes running. Centrifugal and axial compressors, often turbine-driven, move and pressurize gas through process trains, and the same machinery underpins large LNG liquefaction and refrigeration duties where steady, high-power mechanical drive is essential.
The turbine reshaped how the world moves. Marine steam and gas turbines powered fast naval and commercial vessels, the aviation gas turbine made sustained jet flight practical, and turbine and turbocharged drive trains advanced rail and heavy industrial transport. Demands from these missions drove the materials and aerodynamics later carried into industrial machines.
William John Macquorn Rankine described the thermodynamic cycle used as a standard for steam-power installations, where a condensable vapor is heated, expanded to produce work, condensed, and pumped back to pressure (Encyclopaedia Britannica).
Sir Charles Algernon Parsons developed a practical multi-stage steam turbine, using many stages in series so the steam could release energy in smaller steps instead of forcing one blade row to absorb the full drop (Encyclopaedia Britannica).
As boilers, metallurgy, governors, condensers, bearings, and generators improved, steam turbines displaced many reciprocating engines and became the prime mover of large electric power stations. The Rankine cycle remained the organizing model for pressure, temperature, enthalpy drop, heat rate, and condenser performance.
Modern steam turbines operate in fossil, nuclear, biomass, waste-heat, cogeneration, and combined-cycle plants. In a combined cycle, exhaust heat from a gas turbine is recovered in an HRSG to feed a Rankine bottoming cycle, linking field execution directly to both thermal performance and mechanical reliability. This is where Rankine & Brayton Technical Solutions LLC brings practical field expertise to complex turbomachinery packages, supporting installation and commissioning for power generation, combined-cycle, cogeneration, and process applications.
The ideal Brayton cycle describes compression, constant-pressure heat addition, and expansion through a turbine. NASA explains that this cycle is used in all gas turbine engines and is a basis for predicting turbine-engine thermodynamic performance (NASA Glenn Research Center).
The gas turbine concept required at least a compressor, combustor, and turbine, but practical development was delayed by the difficulty of designing efficient compressors and turbines capable of producing useful net shaft work (Encyclopaedia Britannica).
Aircraft gas turbines pushed axial compressor design, combustor stability, high-temperature materials, blade cooling, and lightweight package architecture. These same disciplines later supported aeroderivative industrial units used for power generation, compression, and process service.
Heavy-duty gas turbines are built for robust stationary duty, while aeroderivatives emphasize high power density, modularity, and operational flexibility. Both rely on the Brayton cycle, but their installation, auxiliary systems, package interfaces, commissioning logic, and field execution risks can be very different. This is where Rankine & Brayton Technical Solutions LLC brings practical field expertise to complex turbomachinery packages, supporting installation and commissioning for power generation, combined-cycle, cogeneration, and process applications.