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Re: [TheTeslaTurbineList] Hot or Cold continued

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  • Paul Eitson
    The most over looked aspect of the Tesla turbine is that vacuum is necessary for correct function. Turbulance at the outlet is caused by a gas exiting against
    Message 1 of 1 , Jun 20, 2000
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      The most over looked aspect of the Tesla turbine is that vacuum is
      necessary for correct function.


      Turbulance at the outlet is caused by a gas exiting against air pressure
      16psi. If the opening is 36 square inches it must over come 576 lbs of
      resistance just to escape the outlet. In most if not all of his turbine
      designs he has two turbines situated over a condensation tank. They
      consist of a drive turbine and a vacuum turbine often on the same
      shaft. The drive turbine vents steam into the condensation tank. The
      vacuum turbine in a separate containment housing removes any air that
      may have entered the tank through a leak.

      Why does this work?

      Consider the amount of work done by the drive turbine to the amount of
      work consumed by the vacuum turbine. The drive turbine recieves 65 cubic
      foot of steam per minute. The vacuum turbine must remove about (lets be
      generous and say) 5 cubic foot of air that seeped in due to leaks.
      Fairly clear that the vacuum turbine only requires a small amount of
      force or work to remove the small amount of air. The steam has been
      converted to water and is just sitting in a tank. The tank will fill at
      the rate of one pound of water every 30 seconds. (Or about one gallon
      every 4 minutes) This will of course be recycled to the boiler to
      conserve heat.

      Inside the tank a vacuum is being produced because the vacuum turbine is
      still trying to remove 65 cubic foot of mass. (Tesla recommended twice
      as many rotors in the vacuum turbine of lighter material.) This would
      compensate for losses. So a vacuum is created not only at the outlet of
      the drive turbine, but also at the inlet. This is especially true if the
      vacuum turbine is started before the drive turbine.

      If a vacuum is created at the inlet nozzle before the steam enters the
      containment housing some fairly amazeing things happen. An ordinary
      nozzle ejecting into a vacuum will give twice the speed. (Maybe)
      The turbine would be rotateing in a vacuum, no resistance to rotation
      except the bearing resistance and not even that if magnetic bearings are
      used. The turbine would accelerate as long as the pressure continued to
      increase. If pressure ceased it would continue to turn as a flywheel in
      a vacuum, making a perfect flywheel storage device. Torque would
      continue to increase until the speed of the incomeing steam matched the
      speed of the turbine. (They usually run at half the speed of the steam.)
      Supersonic nozzles have air speeds around 1500 mph. Theoritically a
      supersonic nozzle could move many tons in this fashion.
      Paul
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