John Bush Wrote:
-------------------------------------------------------
> Casey,
> The current project has been to return the
> delivery system to operation. It will be used in
> daily operation.
> The bagged sand will be dumped into an underground
> tank.
> Air (90psi) is fed from the reservoir to the tank
> through a pipe which ends just above the bottom of
> the tank.
> A larger pipe beginning just above the bottom of
> the tank, located close to the inlet pipe, is
> connected to the hopper located above the roof.
> When air enters the tank from the reservoir its
> only exit is through the larger pipe.
> Because both pipes are buried in the sand at the
> bottom of the tank sand is entrained in the air
> leaving the tank through the larger pipe.
> The sand is carried to the hopper above the roof
> where it drops out of the air flow by gravity and
> fills the hopper.
> The "spent" transport air vents out of the side of
> the hopper near the top through a small pipe.
> Sand can then be dispensed by means of a butterfly
> valve through a hose to the sand dome.
>
> When the entire project is complete "green" sand
> can be dried in a slotted V shaped hopper built
> around and above a large stove in the sand house.
> When dry the sand is shoveled through a screen to
> supply the underground tank.
>
> The enemy of this system is water.
> The first phase of this project has been to ensure
> that the delivery system is kept free of water
> infiltration.
>
> In daily practice locomotive air will be used to
> power the system,
> Pre dried bagged sand will be used.
>
> John Bush
Personally, I'm glad there is no plan to regularly use the stove. A fire next to that beautiful coal tower scares the crap out of me. JP