N:dlzc D:aol T:com (dlzc) wrote:
Dear Richard Casady:

"Richard Casady" wrote in message
...
On Sat, 29 Sep 2007 19:44:35 -0700, Keith Hughes
wrote:

Sounds like perpetual motion to me, but I'm
having a hard time envisioning what you're
describing above.
Of course you are, since it is basically nonsense.
No mention of where the energy comes from.

Links were provided. "waste heat" (from what process?) and / or
"solar heat" have been cited so far. All the vacuum does is move
boiling temperature closer to ambient. Making more common
materials suitable for this application.

David A. Smith

Sorry David, I think you lost track of the posting train here. Richard
was responding to *my* response to the following post from "Vic":

"Calorie expenditure by the survivor(s) could be a problem here.
The strokes for this RO unit can probably be performed by devising a
simple hydraulic pump to move gears, cams, and levers.
The pump cylinder itself would probably need an inverted U tube with
legs perhaps 32' or 33' long.
An initial vacuum might be applied to the top of the U-tube by using a
fitting that can be connected to the PUR Survivor 35 RO.
Once the water starts flowing through the vane at one end of the U
tube, and the vane shaft is turning the gears, cams and levers will be
clacking way, running that PUR unit on auto, good as gold.
After that it's all gravy until you have to change the membrane.
In the meantime you can spend your time fishing until rescued."

Which appears to be a reference to a perpetual motion machine with no
energy source. Nothing whatsoever to do with the vacuum distillation
discussion.

Keith Hughes