Scientists have successfully generated electricity with a hydrogen turbine that produces its own pressure through detonation waves instead of relying on a mechanical compressor. The breakthrough could unlock dramatically more efficient power systems for clean energy and future aviation.

  • Brokkr@lemmy.world
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    12 days ago

    There probably is some novel idea here, but the headline and description could also apply to regular gas engines…

    • Hypx@piefed.socialOPM
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      12 days ago

      It’s referring to a detonation wave engine that does not require a compression stage.

      • Brokkr@lemmy.world
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        12 days ago

        The article isn’t very clear about how compression in this engine is achieved, but it’s clear that compression is still required.

        How is this different?

        • Hypx@piefed.socialOPM
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          12 days ago

          In a detonation wave, the exhaust gases reaches a very high pressure almost immediately, and you use this effect to drive a turbine. This eliminates the need for a compression stage.

          • Brokkr@lemmy.world
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            12 days ago

            Thank you, but that explanation is causing more confusion because it is at odds with the article. The article states that compression is required before ignition. Is that true?

            If not, then in the detonation engine, is the fuel mixture already at explosive concentrations upon mixing?

            • Hypx@piefed.socialOPM
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              12 days ago

              You need to read the article more carefully. It is expilicitly pointing out that only conventional gas turbines need compression. A detonation wave engine does not.

              • Brokkr@lemmy.world
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                12 days ago

                The KIT system creates the required pressure inside the combustion chamber instead.

                I’m specifically referring to that line.

                • Hypx@piefed.socialOPM
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                  12 days ago

                  Please read that sentence more carefully. It is not saying what you think it is saying. The detonation wave generates pressure without compression.