Aeroderivative Gas Turbine
A ground-based gas turbine converted from a retired aircraft engine, retaining the core engine and adding a power turbine and generation module. It features high power density and fast startup, but its thermal efficiency and service life are lower than those of purpose-built generator sets.
Timeline (last 90 days)
Ground gas generators converted from aero engines are already used in industry, with advantages including high power density, fast startup and relatively flexible deployment.
The core approach of aeroderivative gas turbines is to retain the core engine section of a retired turbofan or turbojet engine, remove the fan and bypass structure, and add a power turbine, reduction gearbox, control system and power generation module so that it outputs shaft power to drive a generator.
The startup time of aeroderivative gas turbines is typically on the order of minutes, making them suitable as peaking or emergency power sources.
After aero engines are converted for continuous ground-based power generation, both thermal efficiency and service life are compromised, overhaul intervals are often shorter than those of dedicated generator sets, and maintenance costs are higher.
Aeroderivative units are relatively sensitive to fuel quality and typically use aviation kerosene or light diesel; if switched to natural gas, an additional fuel treatment system must be configured.
Modern heavy-duty gas turbine combined cycle efficiency can reach above 60%, while the simple cycle efficiency of older aeroderivative units is typically only 30% to 40%.
Units converted from older engines often retain the original combustor design, resulting in noticeably higher NOx emission concentrations, and some models require the addition of selective catalytic reduction equipment to meet local environmental permits.
All Facts (7)
Ground gas generators converted from aero engines are already used in industry, with advantages including high power density, fast startup and relatively flexible deployment.
50%UnverifiedThe core approach of aeroderivative gas turbines is to retain the core engine section of a retired turbofan or turbojet engine, remove the fan and bypass structure, and add a power turbine, reduction gearbox, control system and power generation module so that it outputs shaft power to drive a generator.
50%UnverifiedThe startup time of aeroderivative gas turbines is typically on the order of minutes, making them suitable as peaking or emergency power sources.
50%UnverifiedAfter aero engines are converted for continuous ground-based power generation, both thermal efficiency and service life are compromised, overhaul intervals are often shorter than those of dedicated generator sets, and maintenance costs are higher.
50%UnverifiedAeroderivative units are relatively sensitive to fuel quality and typically use aviation kerosene or light diesel; if switched to natural gas, an additional fuel treatment system must be configured.
50%UnverifiedModern heavy-duty gas turbine combined cycle efficiency can reach above 60%, while the simple cycle efficiency of older aeroderivative units is typically only 30% to 40%.
50%UnverifiedUnits converted from older engines often retain the original combustor design, resulting in noticeably higher NOx emission concentrations, and some models require the addition of selective catalytic reduction equipment to meet local environmental permits.
50%