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There is lots of detailed information available on how these systems work, but in general once bleed air is tapped off the compressor section the lines split: One line stays hot, and the other runs through a heat exchanger to extract as much heat energy as possible. From there the cooler, pressurized bleed air is expanded. However, because it was "pre-...


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can you explain the purpose of bleed valves in general? See How do variable bleed valves prevent surge? why bleeds are used to prevent the compressor to stall. An answer to that question already hints to the use of bleed-off in transient operation. This answer will describe the transient performance in more detail by using the compressor characteristic/map ...


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