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actionfromafar • today at 2:02 PM • 1 reply • view on HN

Think if it like this - is the turbine exhaust hot? Then you are losing energy.

You can extract more energy by adding stages but that increases weight.

While a small and light weight diesel engine is already very close to the theoretical limit.


Replies

cucumber3732842 • today at 4:21 PM

>Think if it like this - is the turbine exhaust hot? Then you are losing energy.

Turbines for land uses have heat exchangers to get a lot of this back. Even after those the turbine is still lighter for a given power output and lifetime. But normal engines are a lot cheaper.