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Joined 11 months ago
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Cake day: April 13th, 2024

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  • First of all: Sorry, I made a mistake yesterday. I ment to say liquid but translated it wrong in my head

    Now to your question, they are similar in some aspects, that’s what makes gasses and liquids both be considered fluids, so fluid dynamics apply to both for example.

    The difference is how much the molecules in the liquid or gas interact: A lot in the liquid, not significantly in most gasses under standard conditions.

    And the things is, the SLPM measure apparently relies on a characteristic of ideal gasses, that one mol of gas particles under standard conditions always takes a fixed volume 22.41 l. So now I’m confused why they would use it for hydraulic fluid, which sounds like a liquid to me.



















  • The article opens with saying only 25% of the fuel’s energy gets used by the motor, 75% is in the heat of the exhaust. I’ll take that as a given. Let’s assume a small motor (in this inventions favour) with a nominal power of only 60 kW, running only at half tilt, 30 kW.

    That gives us 90 kW in the exhaust heat by the numbers of the article. So the 56 W it captured in the simulation would be 0.046% of the total 120 kW power being converted by burning the fuel, raising the efficiency from 25% to 25.046%.

    The headline is so massively overstated it’s basically just a lie. If the device was built, not just simulated, and you’d manage to substitute part of the alternator’s ouput with the thermoelectic generator’s output, the effect on fuel economy would be below the measurable level.