Almost Free Air Conditioning/Heat
Pump pushing water up a pipe from a well.
Ed. Note: Water goes thru a filter so sediment isn’t as much of an issue.
Water reaches a spot where it branches off into two pipes.
Pipe a: For AC
Pipe b: For Heat
Controlled by a valve.
The cold well water from Pipe A will run into as much pipe running along the ceiling and walls as possible. The cold-underground-temp water fills the pipes in the home.
The cold water will exchange energy with the warm room air. The cold water will cool down the air, the warm air will heat the water in the pipes, and the room temp will drop.
When the water in the walls reaches a certain temp, its drained into underground 50-gallon drums.
Then it pulls cold water from the well again, and once the walls fill with well water,
it reintroduces the last batch (now in drums underground to start cooling), back into the well to cool-again.
Maybie a multi-stage drum system. So if there were three drums, the warm water would be sent to drum 3. It would draw water from drum 1 back into the well (the drum that’s had the longest time with water underground.) Then the water from drum 3, sent to drum 2, the water from drum 2 sent to drum one.
1) Sediment in the well could cause an issue if present.
2) Pipes made for heat transfer, should be made of a good heat/cold conducting metal.
*EDIT 11/25/17 (A durable thin plastic style piping might be more cost effective. Built to be tough but thin enough to easily transfer cold and warm temperatures. )
Pipe B could be used with a Hot Water heater, to have the warm water raise the temp of cold room air and vice versa.
3) Could probably use multi-stage water filters, and a way to introduce a cleaning agent into the system.