Gravity Mill - any comments to this idea?

[FreeEnergy]

can't this be used in a geothermal way? doesn't temperature have to do with pressure?

maybe you can have a tube going from the inside of your house's basement to the outside roof. i dont know i could be wrong.

[arbus]

This is a bit off topic to the Gravity mill, but worth looking at.
Ocean Gliders have been around for a while.  They work basicly by compressing air and sinking, then decompress the air and float.

here is a link
http://spray.ucsd.edu/

There are lots of variations to this model and some are designed to stay in the ocean indefinately.
They are powered by batteries and recharged using different methods including heat diferentiation, drag generator, etc. 
They require a fair amount of energy to compress the air. But they only have to sink or float. 
The link above has good diagram of how it works.

Simply the point here is if an object can sink and rise for long enough you can use that force to generate electricity to compress and decompress the air. The sinking and floating are free.  Only at the top and bottom of travel do you need to add force.

ar

[FreeEnergy]

This is a bit off topic to the Gravity mill, but worth looking at.
Ocean Gliders have been around for a while.  They work basicly by compressing air and sinking, then decompress the air and float.

here is a link
http://spray.ucsd.edu/

There are lots of variations to this model and some are designed to stay in the ocean indefinately.
They are powered by batteries and recharged using different methods including heat diferentiation, drag generator, etc. 
They require a fair amount of energy to compress the air. But they only have to sink or float. 
The link above has good diagram of how it works.

Simply the point here is if an object can sink and rise for long enough you can use that force to generate electricity to compress and decompress the air. The sinking and floating are free.  Only at the top and bottom of travel do you need to add force.

ar

i dont know but i can be wrong...the energy that it takes to compress and de-compress the float is greater than the free ride that you get. the sinking and floating is free, but the energy gained is not enough to compress/de-compress.

[william66tell]

The original Gravity Mill was a float that was compressed at the top of the stroke and sank to the bottom, displacing water in both directions.  The problem is in the force required to collapse the float.
  Why not use a compound pulley within the float to compress the float.  The pulley would be powered by a water wheel.  The release mechanism would be a tension release set to activate when the float was at its maximum weight at the top of the stroke and the cable would freewheel to the bottom of the stroke.  When the float fully inflates the tension on the cable will be minimal and the retrieving mechanism would engage and reel the cable to repeat the cycle.
   The latching mechanism to keep the float compressed should be inside the diameter of the float cylinder.  This is a slight modification of the original release idea, but using the same release idea concept.

William66tell

[FreeEnergy]

The original Gravity Mill was a float that was compressed at the top of the stroke and sank to the bottom, displacing water in both directions.  The problem is in the force required to collapse the float.
  Why not use a compound pulley within the float to compress the float.  The pulley would be powered by a water wheel.  The release mechanism would be a tension release set to activate when the float was at its maximum weight at the top of the stroke and the cable would freewheel to the bottom of the stroke.  When the float fully inflates the tension on the cable will be minimal and the retrieving mechanism would engage and reel the cable to repeat the cycle.
   The latching mechanism to keep the float compressed should be inside the diameter of the float cylinder.  This is a slight modification of the original release idea, but using the same release idea concept.

William66tell

could you please draw a picture for us for better understanding?