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### Author Topic: Buoyancy device by phase change of water to ice  (Read 4977 times)

#### Willy

• Full Member
• Posts: 236
##### Re: Buoyancy device by phase change of water to ice
« Reply #45 on: May 02, 2023, 12:51:37 PM »
Agree

It needs organized and drawings.  I'll get to it when I can.

thanks

#### Willy

• Full Member
• Posts: 236
##### Re: Buoyancy device by phase change of water to ice
« Reply #46 on: May 02, 2023, 02:03:15 PM »
The process begins with the drawing below.

The freeze thaw pump is a heat exchanger for the adsorption of heat from water /
freezing of  water. It should have been labeled as a freeze pump in the drawing.

Its energy source could be a heat radiator and pump located above the water's surface,
in cold arctic air. A cooling fluid is circulated between the radiator and the adsorber.

Cyclically the Ice is discarded and new water taken in and frozen.

The water expands upon freezing, presses a hydraulic fluid through a piston cylinder
and moves a piston.  It is a water phase change driven, hydraulic press.

Note that, Only for simplifying of the math, did I assign a 1 square centimeter surface area to
the piston.  As a result, this give a very long piston stroke (caused by the hydraulic pressure
/ fluid) 80,000 centimeters length.  It will be more practical to have a larger piston diameter
and a shorter piston stroke.  This would however, necessitate the changing of all of the various
mathematical ratios given in the exemplary model of its operation.

The hydraulic press / piston's motion is used to draw / pull a vacuum in another piston and
cylinder. I have referred to that   other  piston and cylinder as a syringe (like unto a syringe used for hypodermic injections but obviously much larger).  That syringe pulls nothing into itself
as it expands. An empty space / vacuum in relationship to the surrounding water pressure
is created instead.  The syringe is
LATCHED
in that position until it has arrived at the surface
of the water.  I hope this helps for now.

EDIT
And math checked

1280   kilograms of buoyancy  x 1101 meters of depth = 1,409,840 joules.
not 14,092,800 joules.
« Last Edit: May 03, 2023, 01:23:56 AM by Willy »

#### Willy

• Full Member
• Posts: 236
##### Re: Buoyancy device by phase change of water to ice
« Reply #47 on: May 03, 2023, 03:45:23 AM »

joules by ice rise from 1101 meters of depth  is 0.8 kg x 1101 meters = 88.08 joules
80,000 cubic centimeters under vacuum against 14.7 psia at sea level = 8,108 joules
joules from water to ice expansion =  1,409,840 joules
Total = 1,418,036 joules
1,418,036 joules total out  to  4,184,000 joules in
2.9674 to 1  less than 33% efficient

Probably more like 25% efficient after cooling fluid pumping cost.

but useful

Positives / informative

The difference in energy content of a vacuum "filled" float as the result of
temperature changes

from

the energy content of a gas filled float as the result of temperature changes.

Buoyancy neutral vertical drive chain (up and then down after rounding a gear, then up again
after rounding a second gear.