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  1. BenjieN

    Using a liquid nitrogen boiler to power a pneumatic humanoid robot

    Moltenmetal: yeah, I calculate that I use a little more than a liter a minute walking, so I am looking at refueling every 7-10 min at the moment, which is bad, but better than compressed air, which only gets me about 5 min operation in equal weight, plus I need to swap tanks, rather than pour in...
  2. BenjieN

    Using a liquid nitrogen boiler to power a pneumatic humanoid robot

    Transient1: Commercial (anybots.com) MintJulep: It seems that dry ice has much the same problems as LN2 just worse. It takes more heat to vaporize, still needs to be brought up to a temperature that won't frost, and Carbon Dioxide is heavier per mol than N2 so you get less Work per kg out of it.
  3. BenjieN

    Using a liquid nitrogen boiler to power a pneumatic humanoid robot

    The idea is to take some of the liquid Nitrogen and then heat it in a vessel so that the pressure increases as the nitrogen turns into gas. Simplest version: Liquid Nitrogen is poured into a large boiler at atmospheric pressure. The boiler is sealed with a flame under it. The flame adds heat...
  4. BenjieN

    Using a liquid nitrogen boiler to power a pneumatic humanoid robot

    I am working on a project to develop a system that a pneumatic robot could carry that could supply it with pressurized gas. We are considering having a tank of liquid nitrogen, which we than take small amounts of and then heat with either ambient air or with fossil fuels to raise the pressure...

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