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© ©2021 Michael Jones All Rights Reserved

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© ©2021 Michael Jones All Rights Reserved
From the album:

Island Lake Models

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Taken with EASTMAN KODAK COMPANY KODAK Z650 ZOOM DIGITAL CAMERA

  • 6.3 mm
  • 1/13
  • f f/2.8
  • ISO 160
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Amazing craftsmanship.

I didn't realize she did not have a condenser, makes sense for such a shallow draft I guess but she must have carried a fair amount of feed water. 

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On western rivers, they would suck water right out of the river.  There was a strainer that would keep fish out of the intakes, but not much more.  Worst job on a steamboat was cleaning out the boilers when they "mudded up."

 

Exhaust steam would be ported up the stack which provided if not a vacuum, something lower than atmospheric pressure.  Very inefficient, but very low cost too and simple, two things that were very important back then!

 

 

Dan

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My experience is somewhat dated, but even fairly recent marine steam turbine power plants included steam-powered devices called "air ejectors" (basically a Venturi suction tube) whose main purpose was to reduce the turbine condenser pressure very close to an absolute vacuum in order to maximize turbine efficiency. But they also removed  noncondensible gases, mainly nitrogen and oxygen, from the steam. The discharge of the air ejectors went into another condenser that removed the the residual condensed steam, returning that water to the steam cycle, while venting the noncondensible gases to the atmosphere.

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On 8/8/2021 at 4:57 AM, schooner said:

Amazing craftsmanship.

I didn't realize she did not have a condenser, makes sense for such a shallow draft I guess but she must have carried a fair amount of feed water. 

Two 4,ooo gallon feed water tanks.

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