Gasturb 13 Apr 2026

Unlike the can-annular or silo designs of competitors, Gasturb 13 used a single annular reverse-flow combustor . Fuel (natural gas or #2 diesel) was injected through 24 nozzles arranged in a ring, with the flame front traveling backward relative to the compressor discharge. This allowed for a longer residence time at lower peak temperatures, drastically cutting NOx emissions to 15 ppm—a miracle for the early 1990s without selective catalytic reduction. The downside: the reverse-flow design created a resonant frequency at 75% load that could shake the entire building. Operators learned to “punch through” that band quickly, accelerating from 74% to 76% in under two seconds, lest the windows shatter.

When the last Gasturb 13 finally spools down for good—perhaps in a remote Alaskan sawmill or a Nigerian refinery—an engineer will likely pour a cup of coffee, wipe the grease from her hands, and listen to the silence. And she will remember that for a brief, roaring window in industrial history, a flawed, screaming, impossible machine from a failed Swedish company did exactly what was asked of it: it kept the lights on. Gasturb 13

But not all. In 2019, a peculiar thing happened. As renewable penetration soared in Europe, grid operators discovered that modern, high-efficiency combined-cycle plants were too slow . They needed machines that could go from spark to full load in under 12 minutes—the Gasturb 13’s specialty. A small industry of “Gasturb 13 revivalists” emerged, centered around a former United Turbine field engineer named Klaus Dettweiler, who had secretly stockpiled 40,000 critical parts in a warehouse in Szczecin, Poland. Unlike the can-annular or silo designs of competitors,

In the sprawling pantheon of industrial machinery, certain names carry the weight of legend: the Rolls-Royce Merlin, the General Electric 7HA, the Siemens SGT-800. Yet, for every celebrated behemoth, there exists a quieter, more disruptive predecessor—a machine that solved a problem no one had yet admitted existed. For the combined heat and power (CHP) markets of the late 1990s, that machine was Gasturb 13 . The downside: the reverse-flow design created a resonant